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1
Kalinchyk, Vasyl, Vitalii Pobigaylo, Vitalii Kalinchyk, Olena Borychenko, and Aleksandr Meita. "Application of neural networks for predicting electric load." Bulletin of NTU "KhPI". Series: Problems of Electrical Machines and Apparatus Perfection. The Theory and Practice, no. 2 (12) (December 26, 2024): 50–55. https://doi.org/10.20998/2079-3944.2024.2.10.
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The paper shows that the operational management of the power consumption regime is reduced to solving the problem of operational forecasting of the enterprise's load. The paper analyzes the works devoted to the forecasting of electric loads of power systems and industrial enterprises. It is shown that in order to achieve the required forecast accuracy, it is advisable to use adaptive forecasting procedures and, in particular, to use artificial neural networks. The use of artificial neural networks for forecasting the load of industrial enterprises is due to their properties, such as the ability to learn, reliability with incomplete input information, and the rapid response of the learned network to input influences. The conditions for determining the configuration of a neural network are considered. The structure of a neural network for predicting the electrical load of an industrial enterprise is presented. The process of training an artificial neural network with fitting the model to data from a retrospective sample is presented. The considered models of daily load forecasting were investigated on retrospective data on the modes of electricity consumption of a chemical enterprise with normalization of input data. The graphs of the actual total load and the forecast obtained by the artificial neural network models are presented. The research has shown that the use of an artificial neural network allows for a qualitative forecast of the enterprise's load under normal operating conditions of the equipment.
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Voloshko, Anatolii V., Yaroslav S. Bederak, and Oleksandr A. Kozlovskyi. "AN IMPROVED PRE-FORECASTING ANALYSIS OF ELECTRICAL LOADS OF PUMPING STATION." Resource-Efficient Technologies, no. 4 (February 21, 2020): 20–29. http://dx.doi.org/10.18799/24056537/2019/4/265.
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Relevance of research. In order to reduce energy losses, an accurate and timely forecast of the amount of consumed electricity is necessary. Accurate forecasting of electrical loads of industrial enterprises and their divisions (productions, workshops, departments etc.) allows planning of normal operating conditions, concluding contracts for the electricity supply with the electricity supply company under more favorable conditions, and improving the electricity quality, which ultimately affects the final cost of the products produced by an enterprise. So far, more than 150 forecasting methods of electrical loads have been developed. Usually, the most convenient one is selected based on the forecaster experience by creating and analyzing several forecasting models in order to identify the best. Therefore, in order to simplify the forecasting procedure, it is necessary to develop the methodology for forecasting analysis. This methodology should enable canceling forecasting algorithms that will create lower quality forecasts. The main objective is to develop the methodology for making a forecasting analysis of power consumption on the example of a pumping station of an enterprise with a continuous cycle of work to increase the efficiency of energy consumption and implementation of energy-saving measures. Objects of research: the process of forecasting electrical loads of a pumping station of the enterprise with a continuous cycle of work. Methods of research: fundamental principles of the theory of electrical engineering, statistical methods for power consumption forecasting, the method for detecting the trend of radio signals, and fractal analysis of time series. Research results. The methodology for forecasting analysis of power consumption, which makes it possible to apply the most appropriate methods to forecast the operational power consumption, is developed. For the first time, the radio signal trend detection method is applied to identify the trend of electrical loads. The variation ranges of the fractal parameters of time series of electrical loads are established depending on the variation coefficient of the time series for different periods of time. The Brown method of exponential smoothing that is used to forecast the electrical loads, in the case of identifying the smoothing constant α is in the beyond set ( ), is further improved. The regularity of changes in the fractal parameters of time series of power consumption of a pumping station with an increase in the time series duration and their field of application are explained.
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Voloshko, A. V., Ya S. Bederak, and O. A. Kozlovskyi. "AN IMPROVED PRE-FORECASTING ANALYSIS OF ELECTRICAL LOADS OF PUMPING STATION." Resource-Efficient Technologies, no. 4 (February 21, 2020): 20–29. http://dx.doi.org/10.18799/24056529/2019/4/265.
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Relevance of research. In order to reduce energy losses, an accurate and timely forecast of the amount of consumed electricity is necessary. Accurate forecasting of electrical loads of industrial enterprises and their divisions (productions, workshops, departments etc.) allows planning of normal operating conditions, concluding contracts for the electricity supply with the electricity supply company under more favorable conditions, and improving the electricity quality, which ultimately affects the final cost of the products produced by an enterprise. So far, more than 150 forecasting methods of electrical loads have been developed. Usually, the most convenient one is selected based on the forecaster experience by creating and analyzing several forecasting models in order to identify the best. Therefore, in order to simplify the forecasting procedure, it is necessary to develop the methodology for forecasting analysis. This methodology should enable canceling forecasting algorithms that will create lower quality forecasts. The main objective is to develop the methodology for making a forecasting analysis of power consumption on the example of a pumping station of an enterprise with a continuous cycle of work to increase the efficiency of energy consumption and implementation of energy-saving measures. Objects of research: the process of forecasting electrical loads of a pumping station of the enterprise with a continuous cycle of work. Methods of research: fundamental principles of the theory of electrical engineering, statistical methods for power consumption forecasting, the method for detecting the trend of radio signals, and fractal analysis of time series. Research results. The methodology for forecasting analysis of power consumption, which makes it possible to apply the most appropriate methods to forecast the operational power consumption, is developed. For the first time, the radio signal trend detection method is applied to identify the trend of electrical loads. The variation ranges of the fractal parameters of time series of electrical loads are established depending on the variation coefficient of the time series for different periods of time. The Brown method of exponential smoothing that is used to forecast the electrical loads, in the case of identifying the smoothing constant α is in the beyond set ( ), is further improved. The regularity of changes in the fractal parameters of time series of power consumption of a pumping station with an increase in the time series duration and their field of application are explained.
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Rukhlov, Artem, Nataliia Rukhlova, and Mykhailo Voronin. "Components of the Daily Power Consumption Profile of a Coal Mine." Central Ukrainian Scientific Bulletin. Technical Sciences 2, no. 11(42) (2025): 177–83. https://doi.org/10.32515/2664-262x.2025.11(42).2.177-183.
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The article is dedicated to analysis of the power consumption modes of coal mines and determination of their indicators in the context of implementing various methods of energy supply. The authors of the article analyze the advantages and disadvantages of centralized and decentralized (combined) methods of enterprise energy supply, and given the current trends in the Ukrainian energy system, this analysis allows us to state that the second option is increasingly more expedient. However, the economic and technological conditions of any method of energy supply encourage enterprises to implement certain measures to regulate the power consumption modes which consist in shifting the operating hours of powerful regulatory consumers throughout the day without causing damage to the technological process. The authors emphasize that such measures can significantly change the estimated (actual) maximum electrical load of a coal mine, which, depending on its new level, may have both negative and positive consequences for the enterprise's power supply system. Under such conditions, determining a new value of the maximum electrical load using known methods will not allow obtaining a correct result due to the failure to consider the modern trends for regulating the power consumption modes. Therefore, the article proposes to determine the maximum electrical loads of coal mines based on modeled group power consumption profiles, taking into account the new operating modes of technological plants which meet the requirements of the enterprise's power supply system (centralized or decentralized). To this end, the authors have classified the mine's electrical receivers according to the indicators of their individual electrical loading diagrams into three groups - with uniform, stage and random power consumption. This made it possible to determine the constant and random components of the group daily power consumption profile for a coal mine.
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Kotenev, Viktor I., Alexander V. Kotenev, and Alexander D. Stulov. "Automatic control system of the reactive power factor of the power supply system of the industrial enterprise." Vestnik of Samara State Technical University. Technical Sciences Series 29, no. 4 (2021): 86–98. http://dx.doi.org/10.14498/tech.2021.4.7.
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Considered is the control of the reactive power factor of the power supply system of an industrial enterprise, which includes: electrical receivers with asynchronous load; workshop transformer substations with and without regulated capacitor units, as well as the main step-down substation with synchronous motors powered from it. It is proposed to consider electrical receivers with capacitor units and a transformer substation as an object of reactive power factor control, on the basis of which the corresponding automatic control system (ACS) is built. An ACS with an algorithm formed as a function of active and reactive power of electrical receivers is considered. The ACS was developed by the reactive power factor of the power supply system of the entire enterprise with shop combined loads. A method is given for calculating the capacity of capacitor units of shop substations. The use of this control system will allow meeting the regulatory requirements for ensuring the limiting values of the reactive power coefficients and thereby reducing losses during the transportation of electricity and increasing the throughput of the electrical network.
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Rokicki, Łukasz, Mirosław Parol, Piotr Pałka, and Marcin Kopyt. "Reducing the Peak Power Demand and Setting the Proper Operating Regimes of Electrical Energy Devices in an Industrial Factory Using a Multi-Agent System—The Solutions of the DIEGO Project." Energies 18, no. 10 (2025): 2416. https://doi.org/10.3390/en18102416.
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Reducing the peak power demand at the level of a considered factory and setting the proper operating regimes of electrical devices located in a factory are the problems raised in this paper. These are essential challenges in industrial facilities, especially when existing highly variable loads for power demand, highly variable renewable sources for power generation, and electrical energy storage systems are considered. Appropriate studies relating to this question were performed within the DIEGO international research project (Digital Energy Path for Planning and Operation of Sustainable Grid, Products, and Society). First, the paper presents the technical characteristics of the electric power grid in the considered factory and analyses the results of the measurements performed in the scope of the load and generation of electrical energy in the factory. Next, the paper presents considered preventive measures for limiting peak electric loads at the industrial enterprise level and describes the results of the effectiveness evaluation of the defined preventive measures. The issue of setting the proper operating regimes for electrical devices installed in the factory is also presented. Multi-agent systems have been implemented for this purpose. The paper presents and discusses the results of the implementation.
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Ustinov, Denis Anatolievich, and Konstantin Alekseevich Khomiakov. "Determination of Dynamic Characteristics for Predicting Electrical Load Curves of Mining Enterprises." Electricity 3, no. 2 (2022): 162–81. http://dx.doi.org/10.3390/electricity3020010.
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The calculation of electrical loads is the first and most significant stage in the design of the power supply system. It is essential to make the right choice when choosing the power electrical equipment: transformers, power lines, and switching devices. Underestimation or overestimation of the calculated values can lead to large losses and an increase in capital costs. Therefore, the reliability of the results plays a key role. The use of energy-saving technologies and energy-efficient electrical equipment leads to a change in the nature and level of power consumption, which must be taken into account when determining the electrical loads. The existing methods leave out dynamic characteristics of electrical load curves, so the calculated values are overestimated by up to 40%. This study shows a load calculation method with the normalized correlation functions and its parameters at the level of the individual and group electricity consumers. As a result, the difference between the calculated and experimental values does not exceed 5%.
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Zhukovsky, Yury, and Pavel Suslikov. "Assessment of the potential effect of applying demand management technology at mining enterprises." Sustainable Development of Mountain Territories 16, no. 3 (2024): 895–908. https://doi.org/10.21177/1998-4502-2024-16-3-895-908.
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Introduction. Currently, the lack of classification of electricity consumers to manage load profiles leads to the impossibility of implementing measures to improve economic and energy efficiency using demand management methods. The study aims to develop a classification of consumers according to their load profiles. Materials and methods. The developed classification of electrical loads is described in terms of the proposed characteristics by graph analytical method. The proposed classification is used in the construction of the simulation model of the electrical complex for the purpose of demand management modelling. Results. The classification of electrical loads obtained in the paper is given in a form ready for conducting experiments in simulation modelling environments. Such environments can be Matlab or AnyLogic. Discussion. In the article, certain restrictions and assumptions that need to be introduced into the model to simplify the calculations were also given. The authors assume that in the future this may become an obstacle in the validation of results. Conclusion. In this article, groups of loads were reviewed and described for use in the demand management process. Further, a modelling approach was selected and justified. The simulation model was based on several aspects described in the paper: the developed classification of loads, the equipment grouped by mining sites, and the electrical part of the model, punctuated by a hybrid electrical system with three independent EE sources. For the model, the assumptions and the main objectives of creation were described in the context of assessing the possibility and potential effect of applying demand management technology in mining enterprises.
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Chebotarova, Yevheniia, and Andrii Perekrest. "Modernization of electrical complex for producing thermal energy for an industrial enterprise." Technology audit and production reserves 5, no. 1(61) (2021): 25–32. http://dx.doi.org/10.15587/2706-5448.2021.240263.
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The object of research is the electrical complex for the preparation of thermal energy at the enterprise. The electrotechnical complex is a heat supply unit that provides thermal energy to the building of the enterprise for the needs of heating, ventilation and hot water supply. One of the identified shortcomings of this facility is the overconsumption of energy resources for heating, caused by the lack of the ability to control consumption. Modernization of heat points and equipping them with automation means will provide quantitative and qualitative control of the heat carrier depending on the outside air temperature. In the course of the study, the method of statistical data analysis was used to analyze the heat load of buildings for heating, ventilation and hot water supply, and the distribution of heat loads by the temperature of the indoor air. Also, an improved discounted method for evaluating the effectiveness of investment projects was used when calculating economic indicators and a method for calculating heat consumption for heating according to aggregated indicators when determining energy consumption for heating. On the basis of the analysis of the heat load and a certain structure of its distribution according to the temperature of the internal air, it was found that more energy resources are consumed for heating. The largest consumer is defined as a building with an internal temperature Tin=16 °C. Calculations of the commercial attractiveness of the proposed technical solutions for buildings with an internal temperature Tin=18 °C have confirmed the feasibility of their implementation in terms of their payback, which does not exceed the period of 3.5 heated seasons. Thanks to the modernization of heat points and the introduction of automated monitoring and regulation systems, optimal heat energy consumption will be ensured depending on the ambient temperature. Unlike other similar studies, the feasibility of introducing automated systems is determined by an improved discounted method, which allows not only to take into account the change in the value of money in the future, but also the required minimum percentage of thermal energy savings to break even projects.
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Yevheniia, Chebotarova, and Perekrest Andrii. "Modernization of electrical complex for producing thermal energy for an industrial enterprise." Technology Audit and Production Reserves 5, no. 1(61) (2021): 25–32. https://doi.org/10.15587/2706-5448.2021.240263.
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<em>The object of research is the electrical complex for the preparation of thermal energy at the enterprise. The electrotechnical complex is a heat supply unit that provides thermal energy to the building of the enterprise for the needs of heating, ventilation and hot water supply. One of the identified shortcomings of this facility is the overconsumption of energy resources for heating, caused by the lack of the ability to control consumption. Modernization of heat points and equipping them with automation means will provide quantitative and qualitative control of the heat carrier depending on the outside air temperature.</em> <em>In the course of the study, the method of statistical data analysis was used to analyze the heat load of buildings for heating, ventilation and hot water supply, and the distribution of heat loads by the temperature of the indoor air. Also, an improved discounted method for evaluating the effectiveness of investment projects was used when calculating economic indicators and a method for calculating heat consumption for heating according to aggregated indicators when determining energy consumption for heating.</em> <em>On the basis of the analysis of the heat load and a certain structure of its distribution according to the temperature of the internal air, it was found that more energy resources are consumed for heating. The largest consumer is defined as a building with an internal temperature T<sub>in</sub>=16 °C. Calculations of the commercial attractiveness of the proposed technical solutions for buildings with an internal temperature T<sub>in</sub>=18 °C have confirmed the feasibility of their implementation in terms of their payback, which does not exceed the period of 3.5 heated seasons.</em> <em>Thanks to the modernization of heat points and the introduction of automated monitoring and regulation systems, optimal heat energy consumption will be ensured depending on the ambient temperature. Unlike other similar studies, the feasibility of introducing automated systems is determined by an improved discounted method, which allows not only to take into account the change in the value of money in the future, but also the required minimum percentage of thermal energy savings to break even projects.</em>
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Li, Jing, Yarong Ma, Hao Li, Yue Liu, and Yalong Li. "A Load Classification Method Based on Hybrid Clustering of Continuous–Discrete Electricity Consumption Characteristics." Processes 13, no. 4 (2025): 1208. https://doi.org/10.3390/pr13041208.
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There are numerous quantities and types of electrical loads, and their electrical characteristics have similarities and differences. To adapt to the development trend of refined management and scheduling on the load side, it is necessary to explore the electricity consumption patterns of loads and classify them. However, the classification performance is affected by data redundancy, the complexity of feature selection, and the diversity of power consumption behavior. To adapt to the development trend of refined management and scheduling on the load side, it is imperative to classify loads based on their electrical characteristics. Firstly, based on a statistical analysis of load-side electricity consumption data, the monthly electricity consumption of each load throughout the year is extracted to reflect the continuous electricity consumption characteristics of each load. By calculating the annual load rate, maximum load utilization hours, and rated capacity of each load and then using a Gaussian Mixture Model (GMM) for clustering analysis, the discrete electricity consumption characteristics of each load are obtained. Then, based on the K-prototypes clustering model, a load classification method is proposed based on continuous and discrete hybrid electricity characteristics. By setting the weight between continuous and discrete electrical characteristics, the optimal number of categories can be determined through the elbow method. Finally, using 86 industrial electricity-consuming enterprises in a region of Northwest China as experimental subjects, the results demonstrate that the method proposed in this study outperforms the K-means, GMM, and Gower.
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Kulikov, Aleksandr, Pavel Ilyushin, Konstantin Suslov, and Sergey Filippov. "Organization of Control of the Generalized Power Quality Parameter Using Wald’s Sequential Analysis Procedure." Inventions 8, no. 1 (2023): 17. http://dx.doi.org/10.3390/inventions8010017.
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This paper analyzes the key defining features of modern electric power distribution networks of industrial enterprises. It is shown that the requirements set by industrial enterprises with respect to power quality parameters (PQPs) at the points of their connection to external distribution networks of utilities have been becoming increasingly strict in recent years. This is justified by the high sensitivity of critical electrical loads and distributed generation facilities to distortions of currents and voltages from a pure sine wave. Significant deviations of PQPs lead to significant damage at the consumer end due to the shutdown of electrical equipment by electrical and process protections as a result of overheating and increased wear and tear of individual elements of process lines. This necessitates the implementation of continuous monitoring systems at industrial enterprises, or sampling-based monitoring of PQPs at the boundary bus with an external distribution network. When arranging sampling-based monitoring of PQPs at certain time intervals, only those parameters that are critical for specific electrical loads should be calculated. We provide a rationale for the transition from the monitoring of a set of individual PQPs to a generalized PQP with the arrangement of simultaneous monitoring of several parameters. The joint use of the results of simulation and data from PQP monitoring systems for PQP analysis using the sampling-based procedure produces the desired effect. We present an example of a sequential decision-making process in the analysis of a generalized PQP based on Wald’s sequential analysis procedure. This technique makes it possible to adapt the PQP monitoring procedure to the features of a specific power distribution network of an industrial enterprise. We present the structural diagram of the device developed by the authors, which implements the sampling-based monitoring procedure of the generalized PQP. We put forward an approach for determining the average number of sampling data points required to make a decision about the power quality in the implementation of the sequential analysis procedure.
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Fedorova, Svetlana, Pavel Khudyakov, and David Tomilin. "Development of electric facilities dispatching system of metallurgical enterprise." MATEC Web of Conferences 239 (2018): 01048. http://dx.doi.org/10.1051/matecconf/201823901048.
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The creation of electrical facility modern dispatching system in an industrial enterprise should be part of the overall digitalization strategy, ensuring reliable and safe operation of electrical installations, which in turn will have positive impact on the competitiveness of industrial enterprise. The article describes the principles and algorithms for constructing of electrical facility monitoring and control system on the example of metallurgical enterprise. It is described the pilot project of the plant's electrical facilities dispatching control implementation, defining ecological safety. One of the significant results of the dispatch system introduction for the sulfuric acid subdivision is to reduce technological equipment downtime by 30%. The stages and tools for improving the operational and dispatch management of the enterprise's electrical facilities are developed. The developed system of the company's electric facilities dispatching, combining information channels with three major downgrade substations, will allow solving the problems of electrical parameters, monitoring of the substation equipment state, and controlling the load of transformers, switching equipment. In addition, it becomes possible to control the specific electricity consumption of the main process equipment and efficiently to plan electricity when working in the wholesale market, as well as to increase the speed of decision- making to eliminate and prevent unwanted operating modes.
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Kartel, A. Yu, V. A. Korchagina, and l. A. Kovalenko. "INFORMATION-MEASURING SYSTEM OF QUALITY CONTROL OF POWER SUPPLY OF AN ENTERPRISE UNDER RANDOM CURRENT LOADS OF ITS SECTIONS." Vesti vysshikh uchebnykh zavedenii Chernozem ya 19, no. 1 (2023): 3–9. http://dx.doi.org/10.53015/18159958_2023_19_1_3.
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The paper proposes а method for describing the process of reliable functioning of the enterprise’s power supply system by determining the permissible limit value of the current pulse for the satisfactory functioning of the power supply system. The main differences to the requirements of the electrical system of a modern enterprise are analyzed. Now mandatory requirements are equipment diagnostics, data transmission and, at a number of facilities, remote control, which can not be done without the use of high-performance microprocessor devices that set increased requirements for the operation of power supply systems. It is shown that the use of mechanical and semi-automatic devices to protect equipment is no longer enough, while modern systems have the ability not only to re-enable equipment, turn on backup power, but also adjust active and reactive powers using compensating devices, etc. It is shown how to find the slope of the straight line from the experimental probability and current impulse to determine the limiting value of the current. The operation of an information-measuring system that continuously monitors the behavior of the enterprise’s power supply system is shown. Recommendations are given on the application of the proposed method for protecting the enterprise’s electrical system. А structural-functional block diagram of an information-measuring system (IМS) for operational control with feedback of the quality of power supply of enterprises under conditions of random current consumption of its sections has been developed.
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Rukhlov, A., I. Lutsenko, N. Rukhlova, Y. Koshelenko, and O. Zamkova. "Power consumption regulation of enterprises for reducing of the energy system peak loads." Collection of Research Papers of the National Mining University 74 (September 2023): 204–12. http://dx.doi.org/10.33271/crpnmu/74.204.
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Purpose. To propose measures for a partial solution to the problem of evening peak loads ensuring in the energy system of Ukraine by regulating the power consumption modes of industrial enterprises. This approach will reduce the level of such loads and align the power consumption profile. The methods. The methods of operations research and analysis of technological processes are used. The operation modes of the Ukrainian operating coal mines were studied and their electrical loading diagrams, which are formed by the appropriate technological processes, were analyzed. Findings. A comparative analysis of electrical loading diagrams of the power system and power consumption profiles of industrial facilities and the residential services was performed. The analysis showed the similarity of the electrical loading diagrams of coal mines, which is due to the typical mode of their operation, namely the presence of three work shifts (for coal mining) and one repair shift (for equipment maintenance). This creates prerequisites for the use of such enterprises as consumers-regulators of active power. As a result of which ways of "mitigation" of the problem of peak loads ensuring of the power system were proposed. Originality. The patterns of formation of the electric loading daily profiles for coal mines, determined by the operating mode of enterprises, were established.A new approach is proposed, which consists in changing the daily operation mode of coal mines, namely, moving the repair shift to a time that coincides with the period of evening peak loads in the Ukrainianpower system. Practical implementation. The practical value of this work lies in reducing the level of power consumption during peak loads in the power system,what is currently a very urgent problem for Ukrainian energy complex. The proposed approach allows to use the normal operation mode of a coal mine with the preservation of all necessary technological processes as an effective consumer-regulator of active load.
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Kachan, Yuriy, and Oleksandr Shram. "ESTIMATION OF THE ELECTRICAL LOADS’ MANEUVERING CAPABILITIES OF INDUSTRIAL ENTERPRISES." Electromechanical and energy saving systems 58, no. 2 (2022): 17–23. http://dx.doi.org/10.30929/2072-2052.2022.2.58.17-23.
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Khomiakov, K. A., and D. A. Ustinov. "Improving the accuracy of calculations of electrical loads for industrial enterprises." Journal of Physics: Conference Series 1333 (October 2019): 062009. http://dx.doi.org/10.1088/1742-6596/1333/6/062009.
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Wang, Zhaojie, Feng Gao, Qiaozhu Zhai, Xiaohong Guan, Jiang Wu, and Kun Liu. "Electrical Load Tracking Analysis for Demand Response in Energy Intensive Enterprise." IEEE Transactions on Smart Grid 4, no. 4 (2013): 1917–27. http://dx.doi.org/10.1109/tsg.2013.2257186.
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Manusov, V. Z., D. V. Antonenkov, D. V. Orlov, and B. V. Palagushkin. "Predictive management of enterprise power consumption based on the SINGULAR SPECTRUM ANALYSIS method using recurrent forecasting." Journal of Physics: Conference Series 2131, no. 3 (2021): 032113. http://dx.doi.org/10.1088/1742-6596/2131/3/032113.
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Abstract Modern energy strategies aimed at the development of energy industry presuppose a significant change in the structure of process of formation, transmission, consumption of electrical energy and increasing energy efficiency by introducing modern technologies at all stages. The growth of capacities of industrial enterprises in the conditions of wholesale market of electrical energy and capacity in the modern energy system determines the need for development technologies of predictive control of power consumption process of these enterprises. The introduction of such technologies at the control rooms of the operational management of enterprises will allow to reduce the number of human errors, the number of emergency stops of technological process, increase the reliability of power system mode, rationally manage the process of power consumption of enterprises. In this regard, forecasting the load demand and consumption is an important stage in the functioning and planning of modern power systems. An accurate, correctly compiled forecast is the key to effective management of energy consumption process and reliable operation of the enterprise. Forecasting errors lead to imbalanced supply-demand, which negatively affects operating costs, reliability and efficiency.
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Manusov, V. Z., D. V. Orlov, Sherkhon Sultonov, Javod Ahyoev, and Uyangasaikhan Bumtsend. "Analysis of electricity consumption of electrical machines of a coal industry enterprise using the wavelet transform." IOP Conference Series: Earth and Environmental Science 1070, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1755-1315/1070/1/012002.
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Abstract The priority directions of the prospective development of the energy sector involve improving the quality of generated electricity, reducing the consumption of fuel resources, and implementing modern technologies and methodologies. These strategies are considerably aimed at enterprises of the fuel and energy sector having individual features of electricity consumption. Predictive control of technological processes of these objects is a relevant problem that, in turn, requires the use of up-to-date methods of data analysis and processing. One of these methods is the wavelet transform having several advantages over known methods, such as the Fourier transform. The paper presents a comparative analysis of the wavelet transform of active power consumption for various excavators of a mining enterprise in the Siberian region. The obtained results illustrate the statistics of operation of each excavator and allow making conclusions about their operation for a chosen time interval and presenting them in the form of a 3D model. Mathematical instruments of wavelet analysis can be introduced into existing complexes of automated control systems for the production process of enterprises. The proposed method indicates the possibility of developing the predictive control in the electricity consumption process, planning price categories and optimizing the load schedule with cost reduction and an increase of the financial profit of the enterprise.
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KHOROLSKY, Valentyn, Yurii KORENETS, Oleksandr OMELCHENKO, and Volodymyr HONCHARENKO. "REFRIGERATION MACHINES IN THE SYSTEM OF CONSISTENT MANAGEMENT OF ELECTRIC ENERGY CONSUMPTION OF THE COMPLEX ENTERPRISE-INDUSTRIAL REFRIGERATOR." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 200–212. http://dx.doi.org/10.31891/2307-5732-2022-313-5-200-212.
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The strategy of the coordinated management of electric consumption of the industrial refrigerator of the enterprise of a food complex on production of foodstuff is offered. The structure of the integrated intelligent power management system of the refrigerator enterprise has been developed, in which the systems of automated control of electricity metering and control of the refrigeration trajectory of refrigeration chambers are built-in. The system uses a situation center, industrial Internet of Things (IIoT), digital platform “FOOD” with software (freezing of food products). According to the ASUE-ACS command, the upper level of the industrial refrigerator and its software fulfill the set parameters of the portfolio of orders for active and reactive capacities of the food complex enterprises. An algorithm for controlling an industrial refrigerator during periods of power system power limitations has been developed. It is proved that the reduction of specific energy consumption for the production of one ton of frozen food during the period of power system power limitations and fan outages is possible only by optimizing the technological and energy parameters of refrigeration machines. Technologies for reducing energy consumption by controlling the reactive and active power of synchronous motors of reciprocating compressors and frequency control of asynchronous motors of screw compressors and asynchronous motors of evaporating condensers are presented. Simulation of the geometry of the in-chamber loading of the refrigerating chambers of an industrial refrigerator is performed. New approaches to the choice of adaptive regulators of synchronous motor exciters have been developed, which are coordinated in real time with the energy modes of operation of refrigeration machines and the geometry of refrigeration chamber loading. The possibility of improving the efficiency of power management regimes of food industry enterprises through coordinated automated control of cooling and freezing of meat products, poultry, fish, dairy products, fruits and the use of automated power management systems by building expert and human-machine decision making systems. The developed systems will allow to meet the requirements of energy generating companies for active and reactive loads, reduce costs in the power grid and maintain the voltage in the nodes of electrical receivers within the established norms.
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Gorodnov, A. G. "Design of energy efficient electrotechnical complexes with an autonomous electric supply system." Power engineering: research, equipment, technology 22, no. 4 (2020): 64–78. http://dx.doi.org/10.30724/1998-9903-2020-22-4-64-78.
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Improving energy efficiency and reducing the costs of creating an autonomous power supply complex for an oil production enterprise is an urgent problem and requires a rational solution. At each stage of the electrical complex development of the oil production enterprise, the purpose is to increase energy efficiency in order to reduce the unit cost of electricity per unit of produced well fluid volume. The electrical complex energy efficiency assessment of the oil production enterprise can be determined by the classical methodology of the energy balance. The task of increasing the energy efficiency of the electrical complex with an autonomous power supply system is to ensure a minimum of fuel costs while maintaining current oil production. Two types of the electrical complex models are proposed: with an individual electricity source and a generation center based on individual diesel generators. A method for calculating the energy parameters of the electrical complex components with installations of different types of pumps is presented. In this case, the energy efficiency is improved due to joint deep and group reactive power compensation and power factor correction by reducing the harmonic components of the current. The electrical complex simulation of a submersible electric motor has been carried out in order to determine the values of voltage and current during switching processes. The autonomous power supply system modeling of an oil production enterprise in case of voltage losses and the simulation of diesel generators with a frequency deviation of the generated voltage during load surges was carried out.
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Bogachkov, I. M., and R. N. Khamitov. "Algorithm to select the voltage class for the gas field electricity supply system." Vestnik IGEU, no. 2 (April 30, 2021): 32–39. http://dx.doi.org/10.17588/2072-2672.2021.2.032-039.
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The current algorithms and mathematical models to select the voltage class based on the theory of experimental planning are developed for industrial enterprises (overhead lines with a length of up to 10 km, a power of up to 20 MV, a radial arrangement with a transformation at the end of the line). They do not consider the features of gas fields (overhead lines with a length of up to 20 km and a capacity of 1 MV with a projected growth of up to 10 MV, a transmission network with one pass-through trunk line with distributed transformation along the line). Currently, to develop a mathematical model, the following factors are considered: the average length of the power line and the total load of an enterprise. The proposed models do not allow us to quantify the dynamics of the gas fields power supply system considering the multiple growth of the electrical load in each period of the life cycle. The purpose of this study is to develop a model to solve this problem. An extreme experiment has been carried out during the research. The following input data are set: the average length of the power line; the number of gas clusters; the growth rate of the electric load. The response function is the voltage class that is optimal for the minimum discounted cost. The authors suggest the regression model. In this model the “total load” factor is split into two components, they are gas clusters and growth rate of electric loads. The algorithm to select the optimal voltage class of a distribution grid is proposed. The dynamic experiment is carried out and the growth rate of electric loads in the regressive model is being changed while other factors are being unchanged. As a result, the optimal minimum of the discounted costs of the voltage class for each period of the field life cycle is obtained. The algorithm is implemented in “PRON” software. With the help of “PRON” software, the distribution grids of several operating gas fields in Western Siberia have been investigated. The optimal voltage class of a distribution grid of gas fields is 20 kV. The reliability of the results is verified by reference models of calculating discounted costs.
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Zhu, Hai Nan, Jia Chuan Shi, and Li Ping Liang. "Electrical Energy Saving Based on Production Process Optimization for Steel Enterprise." Advanced Materials Research 383-390 (November 2011): 4475–81. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.4475.
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The iron and steel industry annually consumes about 10% of electricity in China, while the utilization efficiency is relatively low. A two-step energy-saving method for steel enterprise is proposed in this paper. The production plan is regulated to minimize the energy utilized in steel rolling. The electrical load is forecasted according to the optimized steel-rolling plan and the reactive power is compensated to minimize the active power loss and voltage fluctuation. Practical application in Jigang Group Co., Ltd shows the efficiency of the proposed method.
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Papaika, Yu A., O. G. Lysenko, A. V. Bublikov, and I. G. Olishevskiy. "Reliability assessment of power supply systems with powerful nonlinear loads." Electrical Engineering and Power Engineering, no. 4 (December 30, 2020): 26–34. http://dx.doi.org/10.15588/1607-6761-2020-4-3.
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Purpose. To substantiate the expediency of applying distribution laws to model the reliability of power supply systems with powerful nonlinear loads. Methodology. Application of exponential and normal distribution laws, and Weibull's law. Findings. In a comprehensive assessment of the problem of electromagnetic compatibility and the development of multicriteria parameters of energy efficiency of power supply systems of industrial enterprises, it is most appropriate to use the reliability of the elements that are mathematically described by the Weibull distribution. At the same time, the results of modeling of typical electrical modes and variations of substitution schemes of enterprises showed the sensitivity of reliability indicators to changes in power system capacity. Originality. New theoretical foundations for research in modern power supply systems with increasing nonlinear load capacity have developed the scientific basis for analysis and synthesis of energy processes in multiphase electrical systems and propose methods of correction taking into account the complex action of sources of electromagnetic interference. And also to offer methods of estimation of their influence on reliability and efficiency of work of the basic electrotechnological equipment. Practical value. The possibility of applying the obtained results to assess the reliability of power supply systems with powerful nonlinear loads is substantiated. The necessary accuracy and reliability of the decision at the levels of random events, quantities and processes is provided. The mathematical apparatus for the analysis of the main indicators of reliability in the presence of non-sinusoidal voltage is given. Conclusions are made on the adequacy of the calculation results at different stages of electricity distribution. It is shown that the simultaneous optimization of reliability and voltage quality are components of a complex scientific problem of ensuring energy efficiency of electrical networks in the implementation of decentralized models of the energy system.
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Kodkin, Vladimir, Alexander Anikin, and Alexander Baldenkov. "Optimization of Traction Electric Drive with Frequency Control." World Electric Vehicle Journal 16, no. 3 (2025): 139. https://doi.org/10.3390/wevj16030139.
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Traction motors in electric transport are most often synchronous permanent magnet motors (PMSMs). Induction motors (IMs) have large dimensions and stator current amplitudes under comparable loads. Traditional IM control methods do not solve these problems. Recent studies have shown that by changing the main magnetic flux in the IM in accordance with the load, these characteristics of the asynchronous electric drive can be significantly improved. Standard frequency converters do not allow for the implementation of these algorithms. But it makes sense to conduct a potential assessment of the capabilities of this algorithm to reduce the total stator currents of traction IMs. This article analyzes the results of real tests of a special vehicle for transporting rock inside mines, conducted several years ago at a mining equipment plant and in several mines in Russia. The prototype of the special transport vehicle has a load capacity of 15 tons, and its traction electric drive is based on four motor wheels with a total power of 100 kW and a frequency converter from the company “Vacon” (Vaasa, Finland). The tests were conducted at the plant’s testing ground and in real mine conditions. These tests allowed us to obtain information about the operation of the asynchronous electric drive under dynamically changing loads in a wide range, which is very difficult to obtain on laboratory benches or in industrial enterprise conditions. The experiments confirmed the efficiency of the optimization algorithm for asynchronous electric drives with frequency control. At the same time, the weight, size, and electrical parameters of the drive are as close as possible to those of direct current drives.
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Dzyuba, A. P., and I, A. Soloveva. "COST-DEPENDENT ELECTRIC CONSUMPTION AS A TOOL OF RISK MANAGEMENT OF NON-PAYMENT FOR ELECTRIC ENERGY OF INDUSTRIAL ENTERPRISES." Strategic decisions and risk management, no. 1 (May 2, 2019): 08–19. http://dx.doi.org/10.17747/2618-947x-2019-1-08-19.
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The growth of indebtedness of industrial enterprises operating in conditions of economic instability for consumed electricity and the sanctions imposed by the energy supplying organizations for late payments, determine the urgency of the problem of managing the risks of non-payment for energy from industrial enterprises. The article is devoted to the description of the method developed by the authors for managing the risks of non-payment of industrial enterprises for consumed electricity, based on the principles of price-dependent electricity consumption. Based on the study of the mechanism of formation of the cost of electricity purchased by industrial enterprises in the wholesale and retail electricity markets, special methods were proposed to control each component of the cost of electricity: electrical energy, electrical power, electricity transmission services. It justifies the need to develop options for operating modes of industrial equipment, such as nominal load mode, load limiting mode, technological minimum load, in order to effectively implement and use price-dependent power consumption in crisis conditions.Modeling scenarios of price-dependent demand management for power consumption is made on the example of a machine-building enterprise and the calculation and component-wise analysis of the economic effect of price-dependent management and the factors influencing its formation are carried out. The developed method allows you to effectively manage the risks of non-payment of industrial enterprises for electricity, as well as minimize the risks of restricting the supply of electricity to industrial facilities and disruptions in the operation of industrial equipment.
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Dzyuba, A. P., and I, A. Soloveva. "COST-DEPENDENT ELECTRIC CONSUMPTION AS A TOOL OF RISK MANAGEMENT OF NON-PAYMENT FOR ELECTRIC ENERGY OF INDUSTRIAL ENTERPRISES." Strategic decisions and risk management, no. 1 (May 2, 2019): 8–19. http://dx.doi.org/10.17747/2618-947x-2019-1-8-19.
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The growth of indebtedness of industrial enterprises operating in conditions of economic instability for consumed electricity and the sanctions imposed by the energy supplying organizations for late payments, determine the urgency of the problem of managing the risks of non-payment for energy from industrial enterprises. The article is devoted to the description of the method developed by the authors for managing the risks of non-payment of industrial enterprises for consumed electricity, based on the principles of price-dependent electricity consumption. Based on the study of the mechanism of formation of the cost of electricity purchased by industrial enterprises in the wholesale and retail electricity markets, special methods were proposed to control each component of the cost of electricity: electrical energy, electrical power, electricity transmission services. It justifies the need to develop options for operating modes of industrial equipment, such as nominal load mode, load limiting mode, technological minimum load, in order to effectively implement and use price-dependent power consumption in crisis conditions.Modeling scenarios of price-dependent demand management for power consumption is made on the example of a machine-building enterprise and the calculation and component-wise analysis of the economic effect of price-dependent management and the factors influencing its formation are carried out. The developed method allows you to effectively manage the risks of non-payment of industrial enterprises for electricity, as well as minimize the risks of restricting the supply of electricity to industrial facilities and disruptions in the operation of industrial equipment.
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Sinchuk, O. M., M. V. Rogoza, O. Yu Mykhailenko, D. V. Kobeliatskyi, and V. O. Fedotov. "Heuristic control of power consumption by up to 1000 V electrical loads at mining enterprises." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (February 29, 2024): 84–91. http://dx.doi.org/10.33271/nvngu/2024-1/084.
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Purpose. To develop a method for synthesizing the structure and algorithm of the system for automated control of power consumption by up to 1000 V electrical receivers at mining enterprises with iron ore underground mining methods. This enables direct control of the load connection to the industrial power grid to ensure minimum power costs depending on its cost per day ahead. Methodology. The problem of controlling power consumption of electrical receivers at iron ore underground mines is formalized as a binary form of mixed integer programming. To solve it, a binary implementation of the heuristic genetic algorithm is used. The mathematical modeling method analyzes the impact of genetic algorithm settings, such as the number of phenotypes in the population, the number of elite phenotypes that pass unchanged to the next generation, and the method of phenotype crossover on its quality. Findings. As a result of the research, it is found that the most effective way to control the process of power consumption based on an evolutionary genetic algorithm is to use the Laplace crossover function and keep the percentage of elite phenotypes in the population at 10 %. Moreover, at the smallest population size, the best accuracy is observed when using the Laplace function, while at one- and two-point crossover functions, it worsens, but not significantly (no more than 0.2 %). However, as the number of elite phenotypes increases, the duration of the evolutionary search in the control process is reduced by almost a factor of two in the case of one- and two-point crossovers. Originality. For the first time, the structure of a heuristic system for automated control of power consumption by underground electrical receivers with a supply voltage of up to 1000 V at iron ore underground mines has been developed on the basis of an evolutionary genetic algorithm. Depending on the designed volumes of ore production and the daily power cost per day, this allows determining the optimal power load schedule of underground distribution substations in advance, which, subject to the accepted limits on hourly and daily power, minimizes the cost of purchasing power, and thus reduces the cost of the final product. Practical value. The architecture of a heuristic system for controlling power consumption by electrical receivers with a voltage of up to 1000 V based on an evolutionary genetic algorithm is developed and recommended when optimizing the power load schedule of transformer substations of mining and metallurgical enterprises, in particular, of iron ore underground mines operating in this voltage class.
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Kuźniak, Rafał, Artur Pawelec, Artur S. Bartosik, and Marek Pawelczyk. "Determining the Power and Capacity of Electricity Storage in Cooperation with the Microgrid for the Implementation of the Price Arbitration Strategy of Industrial Enterprises Installation." Energies 15, no. 15 (2022): 5614. http://dx.doi.org/10.3390/en15155614.
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The growing worldwide costs of energy produced as a result of conventional fuel combustion, the limited capacity of the distribution grid, and the growing number of unstable installations based on renewable energy sources increase the need to implement systems of stabilization and regulate loads for end users. The battery energy storage system (BESS) that operates in the internal microgrid of an enterprise enables the management of the accumulated energy in any time zone of the day. Using a price arbitrage strategy with an electricity storage facility, we can reduce the cost of high electricity prices during peak demand periods. This study aims to determine the most effective method of setting up the capacity and electrical power of an energy storage system operating in a microgrid, in an enterprise to implement a price arbitration strategy. Such a method should include consideration of the characteristics of the demand profile of consumer systems, the charges related to electricity, and electricity storage costs. The proposed deterministic method is based on the use of a defined parameter, “marginal income elasticity”. In this study, the size of energy storage refers to the power and electric capacity of BESS that are used for the implementation of the price arbitrage strategy.
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Boiko, Sergey, Vadym Shchokin, Sviatoslav Vishnevskyi, Oleksandr Danilin, Oksana Husarova, and Svitlana Hrybanova. "ASPECTS OF DECARBONIZATION OF THE ELECTRICAL SUPPLY SYSTEM IN THE CONDITIONS OF INDUSTRIAL ENTERPRISES." Herald of Khmelnytskyi National University. Technical sciences 319, no. 2 (2023): 369–73. http://dx.doi.org/10.31891/2307-5732-2023-319-1-369-373.
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The significant influence of industrial enterprises provokes sharp climatic changes, which are especially felt locally. Such loads on the ecology of the environment, caused by the activities of industrial enterprises, endanger the safe existence of individual biological individuals and the sustainable development of the social economy in the future. One of the important reasons for such changes is the increase in emissions of greenhouse gases, harmful gases and dust. Meanwhile, a number of issues related to the problem of reducing the ecological burden on the environment through decarbonization of Ukraine’s electricity industry remain unresolved. At this stage of implementation, the Smart Grid concept is considered from the point of view of electrical networks, although in the future it will be a combination of electrical, fuel and heat networks. The International Energy Agency sees hydrogen as a link between these networks. The analysis of the possibility and features of the implementation of the concept of decarbonization of power supply systems of industrial enterprises in the aspect of sustainable development showed the relevance of the implementation of distributed generation sources using buffer storage of electric energy in order to stabilize the level of generated electric energy. It is proposed to use solid polymer electrolyzers as buffer accumulators of electric energy generated by sources of distributed generation based on renewable sources.
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Bukreev, Aleksey V. "Device for Remote and Mobile Monitoring of Electrical Grids of Agricultural Facilities." Elektrotekhnologii i elektrooborudovanie v APK 48, no. 4 (2021): 23–28. http://dx.doi.org/10.22314/2658-4859-2021-68-4-23-28.
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The main methods that are used in the process of energy inspection of agricultural facilities include instrumental inspection of both the electrical grid of the enterprise as a whole and individual technological processes, electrical devices and electrical equipment. The instrumental survey allows you to get diagrams of the electrical load, record the consumption of electrical energy and investigate the main parameters of the electric grid on the enterprise at its different points. It is desirable to carry out such measurements without disconnecting the electrical devices, as this can lead to losses for the enterprise. The available instruments and complexes do not allow remote monitoring of the operating parameters of the electrical grid, are not adapted for long-term measurements in the conditions of agricultural facilities. Permanently installed metering devices, monitoring devices do not provide the necessary mobility during the energy audit. It is required to develop devices for remote and mobile measurement of operating parameters electrical grid of agricultural facilities. (Research purpose) The research purpose is in developing a device for remote and mobile measurement of operating parameters of electric grid of agricultural facilities. (Materials and methods) The article presents the analysis of literature sources, the analysis of existing means for measuring electrical energy parameters. (Results and discussion) The existing methods and technical means that allow for the study of the parameters of the operating modes of electric networks are not adapted to long-term measurements in the conditions of agricultural facilities, since they have low protection from the environment and a high cost. The article presents the developed device schematics and an experimental sample. Its tests were conducted verifying the accuracy of measurements and the correctness of the specified functions. (Conclusions) A device has been developed for remote and mobile measurement of operating parameters of electrical grid of agricultural facilities. Based on the test results, the operability of the developed device was confirmed.
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Nikolaev, A. A., I. G. Gilemov, and M. V. Bulanov. "Assessment of influence of rolling mill FC-AR electric drive operation mode on 10kV supply network voltage quality." Vestnik IGEU, no. 5 (October 31, 2021): 41–50. http://dx.doi.org/10.17588/2072-2672.2021.5.041-050.
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Advanced rolling mill electric drives are based on frequency converters (FC) with active rectifiers (AR). Operation of such converters has negative impact on the in-plant power supply system. To improve the voltage quality of active rectifiers, special algorithms of pulse-width modulation algorithms are used. As a rule, the study of the effect of electric drives with FC-AR on the supply network are carried out based on simplified mathematical models that do not consider possible resonance phenomena in the power supply system and operating mode of electric drives. Thus, the aim of the paper is to assess the acceptability of such an approach. The trends of the main parameters of the rolling mill electric drives have been recorded during the rolling cycle using the IBA PDA software. The obtained dependencies values have been approximated and applied in a complex simulation model of the in-plant power supply system. It considers the parameters of the supply network, cable lines, step-down transformers, rolling mill electric drives and other electrical receivers of the shop substations. The main assumption in simulation modeling is to consider the loads of other electrical receivers in the form of constant values. The authors have studied the effect of the operating modes of the rolling mill electric drive on the electric power quality in the 10 kV distribution network of the in-plant power supply system of a metallurgical enterprise. It is found that the total harmonic distortion KU at 10 kV sections of the main step-down substation of a metallurgical enterprise is changing in a nonlinear manner in the dynamic modes of acceleration and deceleration of electric drives. The nature of the coefficient KU also depends on the presence of resonance phenomena in the frequency response of the medium voltage supply network. The obtained results prove the need to consider the operating modes of electric drives when studying the influence of electric drives with FC-AR on the quality of the supply network voltage. in case we conduct experimental research using the equipment of the enterprises, as well as during theoretical research using mathematical models. The adequacy of the simulation model has previously been confirmed by experimental data and previous studies.
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Popescu, Mihaela, Alexandru Bitoleanu, Mihaita Linca, and Constantin Vlad Suru. "Improving Power Quality by a Four-Wire Shunt Active Power Filter: A Case Study." Energies 14, no. 7 (2021): 1951. http://dx.doi.org/10.3390/en14071951.
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This paper presents the use of a three-phase four-wire shunt active power filter to improve the power quality in the Department of Industrial Electronics of a large enterprise from Romania. The specificity is given by the predominant existence of single-phase consumers (such as personal computers, printers, lighting and AC equipment). In order to identify the power quality indicators and ways to improve them, an A-class analyzer was used to record the electrical quantities and energy parameters in the point of common coupling (PCC) with the nonlinear loads for 27 h. The analysis shows that, in order to improve the power quality in PCC, three goals must be achieved: the compensation of the distortion power, the compensation of the reactive power and the compensation of the load unbalance. By using the conceived three-leg shunt active power filter, controlled through the indirect current control method in an original variant, the power quality at the supply side is very much improved. In the proposed control algorithm, the prescribed active current is obtained as a sum of the loss current provided by the DC voltage and the equivalent active current of the unbalanced load. The performance associated with each objective of the compensation is presented and analyzed. The results show that all the power quality indicators meet the specific standards and regulations and prove the validity of the proposed solution.
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Babanova, I. S., та S. S. Solovyov. "IMPROVING ENERGY EFFICIENCY AND RELIABILITY OF MINING ЕNТЕRРRISЕS ВАSЕD ON THE АNАLYSIS OF LECTRICAL LOAD SСНЕDULЕS". Vesti vysshikh uchebnykh zavedenii Chernozem ya 19, № 1 (2023): 28–44. http://dx.doi.org/10.53015/18159958_2023_19_1_28.
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This article presents the results of calculation and analysis of indicators of graphs of electrical loads, energy efficiency and evaluation of reliability indicators of power supply systems of the scheme on the example of mining enterprises. The expediency of substantiating the preliminary analysis of electrical load profiles with the subsequent use of a general logical-probabilistic method for calculating the reliability of power supply systems is substantiated. А comparative analysis of the calculation of reliability indicators (availability coefficient, average operating time, average recovery time, probability of failure-free operation) for individual consumers in case of failure of several elements is presented. The influence of the reliability of individual elements on the reliability of the system as a whole is evaluated. А comprehensive approach is proposed to solve the problem of assessing energy efficiency indicators (specific electricity consumption for open-pit mining, specific electricity consumption for processing plants, the number of hours of power use) and reliability indicators of power supply systems for mining enterprises by applying a logical-probabilistic calculation method under the condition of limited power supply. Recommendations for improving energy efficiency and analyzing the reliability of power supply to industrial enterprises are given.
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Zhu, Lingkai, Weishuai Wang, Haijing Zhang, and Wei Zheng. "Power consumption characteristics of cement industry and parameter analysis of self provided power plant." E3S Web of Conferences 375 (2023): 01004. http://dx.doi.org/10.1051/e3sconf/202337501004.
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Cement production is an industry that consumes a lot of electric energy. During the period of power shortage in China, the government encouraged multi-channel financing to run electricity to alleviate the power shortage problem of large industrial users. Therefore, many cement enterprises have established their own power plants. This paper analyses the basic electrical characteristics of the cement industry, classifies the loads of enterprises, and studies the regulation characteristics of various types of equipment.
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Voloshko, A. V., D. O. Ivan'ko, K. Yu Gura, and D. K. Mishchenko. "On the issue of using multiple-scale analysis for compression restoration of the electrical load schedule." Electronics and Communications 15, no. 4 (2010): 59–64. https://doi.org/10.20535/2312-1807.2010.15.4.301185.
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The application of multiresolution analysis for compression and reconstruction of the enterprise electric loading graph is considered. It is shown that the graph of loading can be compressed and reconstructed with the necessary accuracy depending on the level of its decomposition
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Kudryashev, Gennadiy, Aleksandr Tret’yakov, and Oksana Shpak. "The Impact of Electricity Losses on the Reliability of Electrical Equipment in the Rural Power Grid of 0.4 kV." Elektrotekhnologii i elektrooborudovanie v APK 1, no. 42 (2021): 34–38. http://dx.doi.org/10.22314/2658-4859-2021-68-1-34-38.
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Rural networks are characterized by a large length and low load density. In the country, there are problems with the reliability of electricity supply to agricultural enterprises and the uninterrupted operation of electrical equipment. The average duration of consumer outages is up to 100 hours annually. In Western developed countries, it is statistically defined as an acceptable state of electricity supply, when for a medium- voltage network during the year, the total duration of interruptions is in the range of 15-60 minutes per year. The permanent functioning of the Russian agro-industrial complex is impossible without reliable and stable operation of rural electric distribution networks. (Research purpose) The research purpose is in studying the impact of electricity losses on the reliability of electrical equipment in the rural power grid of 0.4 kilovolt. (Materials and methods) The methods of ensuring reliability include: design features of the system, reliability of electrical equipment; provision of backup power, system management tools, organization of operation. The reasons for the decrease in reliability were: equipment failures, errors of operating personnel, excess of resource capabilities, deviation of the actual operating conditions of the equipment from the calculated ones. (Results and discussion) The article considers the issues of additional electricity losses in the low- voltage network of 0.4 kilovolts on the example of the power supply of an agricultural enterprise, caused by the flow of reactive energy. The article presents graphs of phase voltages and power consumption. Authors conducted experimental studies in a network of 0.4 kilovolts. The article presents the calculated reliability indicators of electrical equipment at an agricultural enterprise. The increase in reliability when installing a compensating device in the 0.4 kilovolt network are described. (Conclusions) The increase of reliability of electrical equipment is revealed, the probability of failure operation of the electric motors decreased by 3 percent; the probability of failure operation of the electric motors decreased by 19 percent; reducing the failure rate by 15 percent; decrease in failure rates by 14 percent.
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Белей, В. Ф., К. В. Коротких, and В. Д. Самарин. "The results of experimental studies of non-linear loads of a marine industry facility`s electrical power supply system." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg>, no. 4(58) (December 2, 2022): 79–85. http://dx.doi.org/10.37220/mit.2022.58.4.066.
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Основной круг вопросов, составляющих содержание данной работы: количественная оценка высших гармоник, генерируемых различными нелинейными нагрузками в систему электроснабжения судостроительного завода, а именно сварочными аппаратами, светодиодными лампами, конденсаторными установками и другими. На объекте морской индустрии доля нелинейного электрооборудования и приборов в процентах от общей установленной мощности всех электроприёмников предприятия составляет более 35 %. Дальнейшее неконтролируемое увеличение мощности нелинейных нагрузок позволит добиться существенного снижения расхода электроэнергии; массогабаритных показателей; увеличения функциональных возможностей электрооборудования, однако приведёт к искажению синусоидальности кривой напряжения, что вызовет значительный рост гармонических составляющих тока и напряжения; коммутационным перенапряжениям и ухудшению других показателей качества электроэнергии, а также не будет сопровождаться своевременной разработкой рекомендаций и технических решений, направленных на обеспечение показателей качества в соответствии с ГОСТ. Таким образом, имеет место проблема повышения энергетической безопасности и эффективности системы электроснабжения объекта морской индустрии. В работе представлена структура, режим работы системы электроснабжения судостроительного завода и его нелинейных электроприёмников. Приведены результаты экспериментальных исследований, характеризующие высокие уровни гармонических составляющих тока в цепях с нелинейными нагрузками. Результаты, характеризующие уровень эмиссии высших гармоник тока в электрическую сеть, могут быть использованы при реструктуризации системы электроснабжения завода для повышения качества электроэнергии. Разработана методика проведения экспериментальных исследований высших гармонических. The main range of issues that make up the content of this work: a quantitative assessment of higher harmonics generated by various non-linear loads in the power supply system of a shipyard, namely welding machines, LED lamps, capacitor units and others. At the marine industry facility, the share of non-linear electrical equipment and devices as a percentage of the total installed capacity of all electrical receivers of the enterprise is more than 35%. Further uncontrolled increase in the power of non-linear loads will make it possible to achieve a significant reduction in power consumption; weight and size indicators; increasing the functionality of electrical equipment, however, it will lead to a distortion of the sinusoidality of the voltage curve, which will cause a significant increase in the harmonic components of current and voltage; switching surges and deterioration of other power quality indicators, and will not be accompanied by the timely development of recommendations and technical solutions aimed at ensuring quality indicators in accordance with GOST. Thus, there is a problem of increasing the energy security and efficiency of the power supply system of the marine industry. The paper presents the structure, mode of operation of the power supply system of a shipyard and its non-linear electrical receivers. The results of experimental studies characterizing high levels of current harmonic components in circuits with non-linear loads are presented. The results characterizing the level of emission of higher current harmonics into the electrical network can be used in the restructuring of the power supply system of the plant to improve the quality of electricity. A technique for conducting experimental studies of higher harmonics has been developed.
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Kosarev, B. A., G. A. Koshchuk, A. A. Okhotnikov, and V. K. Fedorov. "USE OF A RENEWABLE ENERGY SOURCE IN THE ELECTRICAL SYSTEM OF A TELECOMMUNICATIONS ENTERPRISE TO SMOOTH OUT THE POWER PROFILE." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 11, no. 1 (2023): 49–52. http://dx.doi.org/10.25206/2310-9793-2023-11-1-49-52.
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Any communications enterprise is a consumer with a variable load. To smooth the power profile, a power plant based on a renewable energy source can be added to such an electrical system. The study calculated the parameters of the generating equipment of the power plant, described its design features and presented a control algorithm.
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Papaika, Yu A., O. G. Lysenko, A. V. Bublikov, and I. G. Olishevskiy. "Problems of electromagnetic compatibility of powerful energy associations during mass connection of renewable energy sources." Electrical Engineering and Power Engineering, no. 1 (March 31, 2021): 34–45. http://dx.doi.org/10.15588/1607-6761-2021-1-4.
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Purpose. Analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources. Finding promising ways to increase energy efficiency of power supply systems. Methodology. Mathematical modeling of electromagnetic compatibility. Findings. The analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources allows us to formulate the following provisions that determine the objectives of this study. A promising way to increase the energy efficiency of power supply systems is the introduction of refined methods of analysis and forecasting of electrical modes of industrial enterprises, as well as indicators of voltage quality and reliability of electrical equipment. Originality. Although the problem of electromagnetic compatibility has been the subject of numerous domestic and foreign studies, it should be noted that most of these works consider the processes of generating electromagnetic interference in the electrical network without reference to the technological schedules of electrical equipment. Practical value. One of the electromagnetic effects, which is manifested in the operation of frequency converters, are significant levels of interharmonics and higher harmonics, which are generated in the electrical network and contribute to the growth of electricity losses and reduce the service life of electrical equipment. However, the regularities connecting the parameters of the power system and the modes of powerful industrial converters have not been studied, and the substantiation of the parameters of a rational energy efficient mode of the power supply system, taking into account individual graphs of higher harmonics, has not been carried out until today.
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Rykunov, I. V. "Analysis of the development and implementation of the risk management system in international hydropower projects." Issues of Risk Analysis 15, no. 5 (2018): 68–75. http://dx.doi.org/10.32686/1812-5220-2018-15-5-68-75.
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The activity of any enterprise is always associated with risk. This is especially true of hydropower enterprises, since they work in the conditions of renewable energy sources, which are directly dependent on nature. This necessitates the introduction of the concept of risk management, which will take into account risk factors in the process of developing and approving management decisions.Hydroelectric power plants play an important role in ensuring the required quality of electrical supply, participating in regulating voltage and frequency, covering the uneven part of daily load schedules, guaranteeing measured operation modes of nuclear and thermal power plants, increasing the safety and economy of operation of the final cycles load, performing the function of a temporary emergency and operational power reserve.The purpose of this article is to analyze the characteristics of risk management in hydropower, as well as to justify the development and feasibility of introducing the concept of risk management in hydropower.
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Karpishchenko, O., and A. Horbul. "ECONOMIC EFFICIENCY EVALUATION OF WIND ENERGY INSTALLATION INTRODUCTION AT AN INDUSTRIAL ENTERPRISE." Vìsnik Sumsʹkogo deržavnogo unìversitetu 2021, no. 4 (2021): 54–63. http://dx.doi.org/10.21272/1817-9215.2021.4-7.
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In the conditions of permanent and rapid world energy prices growth, the electricity generation using renewable energy sources (RES) introduction is becoming increasingly important. Given Ukraine's aspirations to join the European Community, incentives for electricity generation through RES have been introduced at the state level. The main tool of electricity producers’ stimulation is the "green tariff". Its size significantly exceeds the cost of purchasing electricity from traditional generation sources, which contributes to the development of this area of energy. At the same time, insufficient attention is paid to the own electricity generation introduction based on RES by industrial enterprises, which has become especially relevant given the rapid rise in natural gas prices in 2021 and the corresponding increase in prices for other energy sources. The goal of this article is to study the feasibility of a wind farm introducing to meet industrial enterprises electricity needs. The objectives of the study are to analyze the wind energy using advantages and disadvantages and practical aspects of such equipment use, assessing the possibility and feasibility of using it in an industrial enterprise under the "green" tariff. The economic aspects of such an innovation are also considered. The required electrical power of the furniture production enterprise needs have been calculated. The economic substantiation of expediency of wind power plant for full maintenance needs in the electric power is carried out. Calculations of the required power plant capacity, wind speed, payback period of investments have been made. The results of the study can be used to decide alternative power sources introduction in similar enterprises. And also can be taken as the plan of electrification basis for enterprises of other branches. Further research is planned to consider to options for the solar power plants, hybrids of solar and wind power plants introduction to meet the individual industrial enterprise’s needs, as well as batteries to store excess energy and equalize the generating capacity utilization in conditions of daily load fluctuations.
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Amović, Mladen, Vladmir Arnaut, and Dragan Koprena. "Implementation of a 2D/3D WebGIS for Electricity Network Management System." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-4/W13-2025 (July 11, 2025): 25–31. https://doi.org/10.5194/isprs-archives-xlviii-4-w13-2025-25-2025.
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Abstract. Effective planning, management, and optimization of electrical distribution networks are essential components of modern smart city development and energy sustainability. This study presents a geospatial decision-support system for the low and medium voltage (LV/MV) network of Elektrokrajina d.o.o., the main electricity distributor in Republika Srpska. Model of the system is built upon the extended INSPIRE Utility Network – Electricity model. It leverages a 2D/3D WebGIS platform (ELMAP) to visualize, analyze, and manage electrical infrastructure using open-source technologies such as PostgreSQL/PostGIS, pgRouting, Geoserver and Mapbox. The integration of real-time and semi-structured data from sensors and enterprise systems (e.g., SAP, MDM) is enabled via service-oriented architecture and parallelized query execution. Particular attention is given to addressing topological inconsistencies in legacy data, reconstructing network topology, and linking meter positions to buildings using GPS and OSM data. Custom algorithms were developed for voltage-level tracking, meter reading route optimization, and network loss analysis, including indicators such as SAIFI, SAIDI, and peak loads. The platform enables spatial identification of critical infrastructure points and supports strategic decisions regarding transformer zoning, network upgrades, and demand management. This research highlights the importance of structured 3D geospatial data and demonstrates how scalable, open-source WebGIS systems can support the energy sector in meeting smart grid and sustainability goals.
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Valiullin, Kamil, and Sergey Tushev. "Algorithm for recalculation of temperature of asynchronous motor based on equivalent thermal circuit." Energy Systems 7, no. 2 (2022): 42–48. http://dx.doi.org/10.34031/es.2022.2.005.
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Diagnostics of electrical equipment at industrial enterprises is an urgent task, since the failure of the main and auxiliary electric drives can lead to significant economic losses for the enterprise. The main share of failures of asynchronous motors is caused by their overload and, accordingly, overheating of the stator winding. Such overheating leads either to an interturn circuit and engine failure, or to a significant reduction in its resource. Therefore, winding temperature control is an important task. In this paper, we propose an algorithm for calculating the temperature of an induction motor with a squirrel-cage rotor with a changing load on the shaft using an equivalent thermal circuit consisting of 10 main nodes. In the work, methods of mathematical modeling were applied using previously developed software, as well as Excel. The task was set to check the possibility of using an equivalent thermal circuit for dynamic modes of operation of electrical equipment. The results of the work allow us to conclude that the developed algorithm can be used for further modeling of both stationary and non-stationary thermal models of asynchronous motors with a squirrel-cage rotor.
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Pivnyak, Gennadiy, Yurii Papaika, Оleksandr Aziukovskyi, Oleksandra Lysenko, and Oleksandr Dluhopolskyi. "Ensuring sustainability of the power supply system of mining enterprises in the conditions of war risks." E3S Web of Conferences 567 (2024): 01012. http://dx.doi.org/10.1051/e3sconf/202456701012.
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In the work, a study of the conditions of normal operation of the power supply system of mining enterprises with limited capacity of the power system was carried out. Based on complex studies, conclusions were drawn about the structure of electrical loads in coal mines, which are characterized by a non-linear and non-symmetric nature. The problem of higher harmonics and interharmonics with limited short-circuit power, which is characteristic of an autonomous power supply system, is highlighted. Stable operation of the power supply system and main consumers is achieved by matching the mode of the generator set with the mode parameters of the load. New dependencies of regime parameters were obtained, which evaluate energy efficiency in complex situations caused by military risks. Experimental studies of voltage quality indicators and energy efficiency in the conditions of power supply systems of coal mines of Ukraine confirmed the adequacy of the proposed analytical models.
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Kondrashova, Yulia N., Angelina M. Efimenko, and Artem Snigur. "ESTIMATION OF THE INFLUENCE OF THE CAPACITY BALANCE ON THE RESULTING STABILITY OF GENERATORS TAKING INTO ACCOUNT RECONSTRUCTION IN EMERGENCY AND POST-EMERGENCY MODES AS APPLIED TO THE POWER UNIT OF THE FERROUS METALLURGY ENTERPRISE." Electrical and data processing facilities and systems 19, no. 3 (2023): 74–88. http://dx.doi.org/10.17122/1999-5458-2023-19-3-74-88.
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Relevance For stable operation of electrical equipment of power supply systems of industrial enterprises, it is necessary to evaluate and present measures that will solve the set tasks in an integrated manner. Thus, there is a need to assess the resulting stability when introducing new generating capacities in emergency and post-emergency modes, taking into account unbalanced capacities. The object of the study is a power hub characterized by a complex configuration with a voltage class from 0.4 to 500 kV and contains its own generation sources. The main consumer of which is the largest producer of ferrous metallurgy. Aim of research The aim of the work is to determine the influence of the power balance on the resulting stability of generators in emergency and post-emergency modes. Research methods To achieve this goal, an algorithm has been developed, which is the basis of the KATRAN program complex. Results This algorithm makes it possible to study the short-circuit elimination mode with separation from the power system as a result of relay protection and automation action with determination of the power unbalance share. According to the results of the work, power areas with violation of the resulting stability of synchronous machines and the resulting power unbalance, allocated as a result of the short circuit, were identified, which allowed to issue additional recommendations on connecting loads in the network or their disconnection in emergency mode. The obtained recommendations will allow to increase the reliability of power supply of the enterprise in order to increase the volume and quality of manufactured products.
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Pleshkov, Petro, Yuri Kazantsev, Oleksandr Sirikov, Natalia Garasova, and Tatiana Velichko. "Methodology for Determining the Design Loads of Industrial Enterprises by the Specific Energy Consumption Using an Non-stationary Model of Electrical Load Schedules." Central Ukrainian Scientific Bulletin. Technical Sciences, no. 2(33) (December 2019): 130–39. http://dx.doi.org/10.32515/2664-262x.2019.2(33).130-139.
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Vinogradov, Aleksandr, Anton Van, and Alina Vinogradova. "SEASONAL BACKUP OF POWER SUPPLY FOR CONSUMERS CONNECTED TO THE SAME ELECTRICAL GRID." Elektrotekhnologii i elektrooborudovanie v APK 72, no. 1 (2025): 49–58. https://doi.org/10.22314/2658-4859-2025-72-1-49-58.
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For traditional methods of redundancy in the systems of external and internal power supply to consumers, it is necessary to increase the estimated capacity of backup sources, since they do not take into account the seasonality of the operation of consumer equipment (electric receivers). With targeted reservation of critical facilities (or equipment), installation of additional power transmission lines is required. At the same time, the seasonality of the schedules of the equipment and electric receivers of consumers is not taken into account. (Research Purpose) The research purpose is developing a method of seasonal redundancy of power supply to consumers connected to the same power grid. (Materials and methods) We carried out an analysis of literary sources, considered traditional ways of reserving power supply to consumers, as well as methods that take into account seasonality factors. We have established their advantages and disadvantages. (Results and discussion) Having studied the seasonality of electrical loads of rural consumers, a new method of seasonal redundancy has been proposed, which allows targeted (taking into account the seasonality of work) connecting equipment, electrical receivers connected to the same electrical grid to a backup source, and also the areas of its application have been identified. By means of this method, power is supplied to dedicated consumers at the required time when the power of the backup power source is insufficient (to reserve all consumers), as well as a decrease in the estimated power of the backup source. The options for implementing the method are illustrated by the example of reserving the power supply of the equipment of a cattle breeding enterprise. (Conclusions) As a result of the application of the proposed method, the reliability of power supply to consumers will increase, the cost of a backup source and the construction of additional power transmission lines will be reduced.
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Gracheva, E. I., T. V. Tabachnikova, and L. V. Shvetskova. "Research of current distribution by phases in asynchronous electric motor with a combined winding." Power engineering: research, equipment, technology 23, no. 5 (2022): 56–70. http://dx.doi.org/10.30724/1998-9903-2021-23-5-56-70.
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THE PURPOSE. To consider the features of power supply system of oil and gas production complex, variety of layout of electrical complexes of producing wells. To develop a universal methodology for determining optimal voltage value in power supply center, that is, on substation power bus.METHODS. When calculating voltage in power supply center, which provides a certain amount of voltage on stator of most remote electric motor, method of equalizing potentials in nodes of outgoing line was used when calculating loads of elements of electrical complexes of producing wells. The development of a methodology for calculating optimal voltage of power supply center was carried out using the method of cognition, which was called ascent from simple to complex. The search for optimal voltage value of power supply center must be carried out by numerical methods with involvement of a software product that allows use of search algorithms.RESULTS. The article proposes a method for calculating optimal voltage of power supply center of outgoing line of an oil and gas producing enterprise. The developed technique can be applied under a wide range of energy optimization criteria and for any configuration of outgoing line circuit, takes into account technological features of the process of mechanized oil production and ensures a reduction in electricity consumption.CONCLUSION. The calculation method considered in article makes it possible to develop an optimal list of organizational and technical measures for voltage regulation in distribution network in order to reduce power consumption.