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Journal articles on the topic 'Power resources Australia Mathematical models'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Austin, Oshin Ola. "Advanced Control And Development of Hydro and Diesel Generator Hybrid Power System Models for Renewable Energy Microgrids." Journal La Multiapp 2, no. 3 (August 11, 2021): 16–32. http://dx.doi.org/10.37899/journallamultiapp.v2i3.383.

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The Nigerian power problem resulted to incessant and erratic supply of electricity and this has destroyed many industrial processes in the country. It has reduced productivity and has increased unemployment rate in the country to over 50million (this figure is over 70% of Nigerian youths). This has led many of the youths in the country to crime. It has led to the deaths of many innocent people in the country. As of 2016, the electricity energy consumption in the world from the world fact book revealed that the average power per capita (watts per person) in the United States is 1,377 Watts. In

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Barragán-Escandón, Antonio, Jonathan Miguel Olmedo Ruiz, Jonnathan David Curillo Tigre, and Esteban F. Zalamea-León. "Assessment of Power Generation Using Biogas from Landfills in an Equatorial Tropical Context." Sustainability 12, no. 7 (March 28, 2020): 2669. http://dx.doi.org/10.3390/su12072669.

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This work evaluates the biogas production potential of the Ceibales landfill for feeding a power plant in the southern region of Ecuador. Biogas production is estimated through mathematical models that consider energy generation and technologies available to supply electricity plants. Characteristic landfill data are accounted for to analyze and develop these mathematical models. Once the generation capability of each source is identified, a decision can be made on the most suitable electricity generation technology. A local model (Ecuadorian model) is applied to calculate the potential of bio

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Iakubovskii, Dmitrii, and Dmitry Krupenev. "Analysis power shortage minimization methods in the modern processing software for adequacy assessment of electric power systems." E3S Web of Conferences 209 (2020): 06008. http://dx.doi.org/10.1051/e3sconf/202020906008.

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Analysis of domestic and foreign software systems for assessing the resource adequacy showed a variety of models and methods used in them. Many software systems use both linear and nonlinear models, these models are optimized according to various criteria to simulate the operation of the system. As tools for solving, software usually use commercial high-level modelling systems for mathematical optimization. However, in addition to the existing ready-made commercial solutions, the authors consider the effectiveness of optimization methods, as well as their parallelized versions, which can be in

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Clarke, David C., and Philip F. Skiba. "Rationale and resources for teaching the mathematical modeling of athletic training and performance." Advances in Physiology Education 37, no. 2 (June 2013): 134–52. http://dx.doi.org/10.1152/advan.00078.2011.

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A number of professions rely on exercise prescription to improve health or athletic performance, including coaching, fitness/personal training, rehabilitation, and exercise physiology. It is therefore advisable that the professionals involved learn the various tools available for designing effective training programs. Mathematical modeling of athletic training and performance, which we henceforth call “performance modeling,” is one such tool. Two models, the critical power (CP) model and the Banister impulse-response (IR) model, offer complementary information. The CP model describes the relat

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Rayaral, Naveen, and Prashanth Revankar. "MODELING OF RENEWABLE ENERGY SYSTEMS FOR POWER GENERATION." International Journal of Engineering Applied Sciences and Technology 6, no. 7 (November 1, 2021): 151–58. http://dx.doi.org/10.33564/ijeast.2021.v06i07.025.

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Sustainable energy systems are termed as the systems which deliver energy and power, utilizing the Renewable and natural resources, which is cost effective and has an environmental concern. The Modeling of the systems and its components is itself a complex procedure. The basic Modeling through Physical law applied to each component of the system, its subsystem and the result of the overall system is more time consuming and requires thorough understanding of physical concept and the results obtained are more accurate. Alternatively, the Mathematical Modeling techniques or the procedures are sim

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Saravanan, G., and I. Gnanambal. "Mathematical Model and Control Design of Micro Turbine Generation System." Journal of Computational and Theoretical Nanoscience 13, no. 10 (October 1, 2016): 7610–16. http://dx.doi.org/10.1166/jctn.2016.5760.

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In this modern era power generation seems to be a very demanding factor. New models and methods have been proposed to derive from various natural and man made resources. In such instances this paper gives a detailed report on the power generation from micro turbines. To enlist the microturbines as a prime source of energy utility restructuring, technology evolution, public environmental policy and expanding power demand are some of the most notable factors. Gas turbines plays a very important role in electric power generation. Especially they are used in the Combined cycle process power Plants

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Komyakov, A. A. "Нормирование и прогнозирование расхода топливно- энергетических ресурсов в производственных процессах на железнодорожном транспорте с использованием информационных технологий". Herald of the Ural State University of Railway Transport, № 2 (2020): 35–43. http://dx.doi.org/10.20291/2079-0392-2020-2-35-43.

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The article reflects issues of improvement of norm setting and forecasting of power resources consumption through improvement of scientific and methodological principles of efficiency enhancement of railway resource-saving operating systems, they including transition from operational methods of fuel and power resources consumption, from the achieved level of power consumption to the methods which imply elaboration and application of mathematical models of power resources and development of organizational structure of control over railway fuel and power resources with reference to delegation of

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Issa, H. I., H. J. Mohammed, L. M. Abdali, A. G. Al Bairmani, and M. Ghachim. "Mathematical Modeling and Controller for PV System by Using MPPT Algorithm." Bulletin of Kalashnikov ISTU 24, no. 1 (April 6, 2021): 96. http://dx.doi.org/10.22213/2413-1172-2021-1-96-101.

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In this research, the study theory of system includes the use of an important source of renewable energy sources (solar source) and linking this system with an electrical load. The world is witnessing a significant rise in fossil fuel prices since the ending of the 20th century and now, this rise in price increases with the decrease in inventory day after day. Therefore, it turned that the field of attention to researchers of power generation to expand in non-conventional energy sources (new and renewable energy sources).New and renewable energy is inexhaustible in use because they rely on ren

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9

Park, Heejung. "Generation Capacity Expansion Planning Considering Hourly Dynamics of Renewable Resources." Energies 13, no. 21 (October 27, 2020): 5626. http://dx.doi.org/10.3390/en13215626.

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As more generation capacity using renewable sources is accommodated in the power system, methods to represent the uncertainty of renewable sources become more important, and stochastic models with different methods for uncertainty representation are introduced. This paper investigates the impacts of hourly variability representation of random variables on a stochastic generation capacity expansion planning model. In order to represent the hourly variability as well as uncertainty of the random parameters such as wind power availability, solar irradiance, and load, AutoRegressive-To-Anything (A

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Perkins, Greg. "Mathematical modelling of in situ combustion and gasification." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 1 (August 2, 2017): 56–73. http://dx.doi.org/10.1177/0957650917721595.

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The total worldwide resources of oil sands, heavy oil, oil shale and coal far exceed those of conventional light oil. In situ combustion and gasification are techniques that can potentially recover the energy from these unconventional hydrocarbon resources. In situ combustion can be used to produce oil, especially viscous and immobile crudes, by heating the oil and reducing the viscosity of the hydrocarbon liquids allowing them to flow to production wells. In situ gasification can be used to convert deep carbonaceous materials into synthesis gas which can be used at surface for power generatio

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Li, Kewen, Yuanping Gao, Youchang Lyu, and Man Wang. "New Mathematical Models for Calculating Proppant Embedment and Fracture Conductivity." SPE Journal 20, no. 03 (June 15, 2015): 496–507. http://dx.doi.org/10.2118/155954-pa.

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Summary Proppant embedment plays a significant role in decreasing fracture aperture and conductivity, especially for weakly consolidated sandstones, shale (oil and gas) rock, and coalbeds. Empirical and semiempirical models were usually used to calculate the embedment of proppants. However, the accuracy of matching or predicting the proppant embedment with these existing models may not be satisfactory in some cases. On the other hand, it is difficult to determine the coefficients of these models. In this study, analytical models were derived to compute proppant embedment and fracture conductiv

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Yurgaytis, Alexey, and Kamol Kamolov. "Automation of production programs by setting conditions of stabilization of the planned system." E3S Web of Conferences 258 (2021): 09062. http://dx.doi.org/10.1051/e3sconf/202125809062.

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Formation of a production program is a time-consuming variable problem. To solve it, many conditions and constraints must be taken into account. Computer power allows one to quickly and accurately solve problems with many variables, unlike a person who relies on his intuition and experience. The following materials and methods were used: collection and analysis of data from construction companies of various sizes, mathematical modeling of the processes of distributing labor resources, graphic interpretation of information, computer modeling. The stages of the problem statement: description of

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Ji, Xiaotong, Dan Liu, and Ping Xiong. "Multi-model fusion short-term power load forecasting based on improved WOA optimization." Mathematical Biosciences and Engineering 19, no. 12 (2022): 13399–420. http://dx.doi.org/10.3934/mbe.2022627.

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<abstract><p>The high accuracy of short-term power load forecasting has a pivotal role in helping power companies to construct reasonable production scheduling plans and avoid resource waste. In this paper, a multi-model short-term power load prediction method based on Variational mode decomposition (VMD)-improved whale optimization algorithm (IWOA)-wavelet temporal convolutional network (WTCN)-bidirectional gated recurrent unit (BiGRU)-attention and CatBoost model fusion is proposed. First, VMD was employed to decompose the load data into different intrinsic mode functions. Second

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Llamas, J., R. Fernandez, and A. Galvache. "Modèle de simulation de la gestion hydrologique." Canadian Journal of Civil Engineering 15, no. 2 (April 1, 1988): 206–15. http://dx.doi.org/10.1139/l88-028.

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In this article, a general methodology for simulation of water resources management is suggested. The research has been conducted in three different levels: a deep analysis of the historical management procedures, the development of some alternative ways to optimal management, and the establishment of planning criteria at short, middle, and long term. The main constraints, divided into three categories according to the severity of probable losses, have been defined as a function of several expected goals: hydro power, flood control, recreational activities, etc. The model was applied with exce

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Li, Mingcan, Hanbin Xiao, Lin Pan, and Chengjun Xu. "Study of Generalized Interaction Wake Models Systems with ELM Variation for Off-Shore Wind Farms." Energies 12, no. 5 (March 5, 2019): 863. http://dx.doi.org/10.3390/en12050863.

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This paper reports a novel frandsen generalized wake model and its variation model-frandsen generalized normal distribution wake model for off-shore wind farms. Two different new wake models in off-shore wind farms have been studied comparatively. Their characteristics have been analyzed through mathematical modeling and derivation. Meanwhile, simulation experiments show that the proposed two new wake models have different properties. Furthermore, the distributions of wind speed and wind direction are modeled by the statistical methods and Extreme Learning Machine through the off-shore wind fa

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Iakubovskii, D. V., D. S. Krupenev, and D. A. Boyarkin. "Application the differential evolution for solving the problem of minimizing the power shortage of electric power systems." E3S Web of Conferences 114 (2019): 03002. http://dx.doi.org/10.1051/e3sconf/201911403002.

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Based on the experience of domestic and foreign researchers, it is known that there are various mathematical models, software systems, and optimization methods used to solve the set tasks for assessing the resource adequacy of electric power systems (EPS). However, the continuous development of EPS leads to the complication and integration of systems against the background of which it becomes necessary to take into account an increasing number of its elements and parameters in one task. Thus, for more effective (in terms of speed and accuracy) solutions of modified models, it is required to an

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Dai, Yuying. "A Comparative Study of Community Dance Management Models in Australia and China—Beijing and Tasmania as an Example." Art and Society 1, no. 3 (December 2022): 52–59. http://dx.doi.org/10.56397/as.2022.12.06.

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Community dance is a socialized expression of urban life. Using a literature research approach, this paper compares the community dance management models in Beijing and Tasmania and finds that there are differences in the development process of community dance in the two cities: the degree of government support, the professionalization of the management organization system, and the value orientation. In addition, the study proposes suggestions for improving the management of community dance in China. The management of community dance in China can improve its management effectiveness in three w

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Engin, Mustafa. "Sizing and Simulation of PV-Wind Hybrid Power System." International Journal of Photoenergy 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/217526.

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A sizing procedure is developed for hybrid system with the aid of mathematical models for photovoltaic cell, wind turbine, and battery that are readily present in the literature. This sizing procedure can simulate the annual performance of different kinds of photovoltaic-wind hybrid power system structures for an identified set of renewable resources, which fulfills technical limitations with the lowest energy cost. The output of the program will display the performance of the system during the year, the total cost of the system, and the best size for the PV-generator, wind generator, and batt

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Zhou, Xiaohang, Jian Liu, Mozhi Ding, Huating Zhu, Mingqi Xu, and Qinmiao Li. "Combined optimization of electric heater-heat tank aggregation for wind curtailment." Journal of Physics: Conference Series 2351, no. 1 (October 1, 2022): 012008. http://dx.doi.org/10.1088/1742-6596/2351/1/012008.

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As the penetration of renewable generation such as wind and solar continues to grow in power systems, system operation calls for curtailment of excess amount of renewable generation. In this regard, an integrated energy system (IES) can be utilized to optimize curtailment. This paper proposes the Electric Heater-Heat Tank Aggregation (EHHTA) as an IES, also an energy coupling device that combines electricity power with heat energy, to deal with redundant wind power curtailment. A combined optimization model was developed in this paper, which incorporates mathematical models of the energy resou

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Li, Delong, Tianfu Wen, Xiaohua Xu, Yangyang Liu, Xiaoyu Yan, Shunxi Jiang, and Ping Huang. "Research on the decision support system for optimal operation of large reservoir power generation." E3S Web of Conferences 346 (2022): 01018. http://dx.doi.org/10.1051/e3sconf/202234601018.

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In order to give full play to the efficiency of power generation and improve the utilization rate of water resources, the optimal operation of reservoir power generation has become one of the hot researches by the experts and scholars. Luntan Key Water-Control Project is taken as an example, which gives consideration to the comprehensive benefits of flood control and power generation. Based on building both the mathematical models of flood pre-release control and the medium-long term power generation, a decision support system with fast online optimization is developed by using SOA architectur

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Martyshkin, Alexey I., Dmitry V. Pashchenko, Dmitry A. Trokoz, Mihail P. Sinev, and Boris L. Svistunov. "Using queuing theory to describe adaptive mathematical models of computing systems with resource virtualization and its verification using a virtual server with a configuration similar to the configuration of a given model." Bulletin of Electrical Engineering and Informatics 9, no. 3 (June 1, 2020): 1106–20. http://dx.doi.org/10.11591/eei.v9i3.1714.

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The article describes the issues of preparation and verification of mathematical models of computing systems with resource virtualization. The object of this study is to verify of mathematical models of computer systems with virtualization experimentally by creating a virtual server on the host platform and monitoring its characteristics under load. Known models cannot be applied to the aircraft with virtualization, because they do not allow a comprehensive analysis to determine the most effective option for the implementation of the initial allocation of resources and its optimization for a s

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Alzate-Castaño, Ricardo, and María Alejandra Mantilla-Villalobos. "Optimal Hierarchical Control of Isolated Microgrids." TecnoLógicas 25, no. 53 (May 31, 2022): e2358. http://dx.doi.org/10.22430/22565337.2358.

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The objective of this article is to propose a novel method that uses hierarchical control to efficiently manage power resources in an isolated Direct Current (DC) microgrid. The scope of this paper is limited to a numerical study of the components of the micro-generation system using accurate mathematical models in a commercial simulation tool. The control methodology is based on power sharing by means of a hierarchical topology including several control layers. In particular, the internal control loops that regulate the electrical variables in individual generators are at the bottom of the hi

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ALI MUNZER, SULEIMAN, D. S. BEGLYAROV, and R. R. SHAKIROV. "FEATURES AND ANALYSIS OF STUDIES OF FISH PROTECTION COMPLEX FOR WATER RECEIVERS OF LARGE HIGH-PRESSURE HYDROELECTRIC POWER PLANTS." Prirodoobustrojstvo, no. 2 (2022): 86–93. http://dx.doi.org/10.26897/1997-6011-2022-2-86-93.

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Development of effective fish protection measures at water intakes is one of the main directions of fish resources conservation and reproduction in inland water bodies of the country. Its complexity is associated with the involvement of many related disciplines: ichthyology, physiology, hydrobiology, ecology, hydraulics, hydrology, etc. In the process of solving the problem of standardization of information to be used for creating mathematical models for forecasting potential impact of water intakes with fish protection on aquatic ecosystem. The article gives a review of the research on the te

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Cruz-De-Jesús, Emely, Jose L. Martínez-Ramos, and Alejandro Marano-Marcolini. "Optimal Scheduling of Controllable Resources in Energy Communities: An Overview of the Optimization Approaches." Energies 16, no. 1 (December 22, 2022): 101. http://dx.doi.org/10.3390/en16010101.

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In recent years, there has been a growing interest in the study of energy communities. This new definition refers to a community sharing energy resources of different types to meet its needs and reduce the associated costs. Optimization is one of the most widely used techniques for scheduling the operation of an energy community. In this study, we extensively reviewed the mathematical models used depending on the objectives and constraints considered. The models were also classified according to whether they address uncertainty and the inclusion of flexibility constraints. The main contributio

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Al-Najjar, Heyam, Christoph Pfeifer, Rafat Al Afif, and Hala J. El-Khozondar. "Estimated View of Renewable Resources as a Sustainable Electrical Energy Source, Case Study." Designs 4, no. 3 (September 8, 2020): 32. http://dx.doi.org/10.3390/designs4030032.

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Renewable energy resources for energy generation in the Gaza Strip (GS) emerge as a complementary resource, not only to meet the need of society for energy in various forms, but also to find available, sustainably, and less costly resources for institutions as with individuals. These resources could provide safety in use, increase energy security, and address environmental concerns. This work aimed to assess the renewable energy potential in the GS, which has few natural resources and a real crisis in energy supply. Therefore, an integrated evaluation methodology is assumed for renewable energ

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Riabov, I., L. Overianova, D. Iakunin, I. Bilokon, and S. Goolak. "APPLICATION OF MANEUVERING ELECTRIC LOCOMOTIVES FOR TRANSFER AND FREIGHT WORK." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 40 (December 28, 2022): 47–62. http://dx.doi.org/10.32703/2617-9040-2022-40-5.

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The paper reviews shunting electric locomotives, the use of which is becoming widespread due to lower costs of fuel and energy resources and a reduction in the impact on the environment. Mathematical models of the movement of a train with a shunting electric locomotive have been developed. A four-axle electric locomotive with a power of 750 kW is proposed for research. A mathematical model of the movement of a train with a ChME3 diesel locomotive has been developed. To compare the costs of fuel and energy resources for freight and transfer operations, simulations of train movement were carried

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RIKVOLD, PER ARNE. "COMPLEX BEHAVIOR IN SIMPLE MODELS OF BIOLOGICAL COEVOLUTION." International Journal of Modern Physics C 20, no. 09 (September 2009): 1387–97. http://dx.doi.org/10.1142/s012918310901445x.

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We explore the complex dynamical behavior of simple predator-prey models of biological coevolution that account for interspecific and intraspecific competition for resources, as well as adaptive foraging behavior. In long kinetic Monte Carlo simulations of these models we find quite robust 1/f-like noise in species diversity and population sizes, as well as power-law distributions for the lifetimes of individual species and the durations of quiet periods of relative evolutionary stasis. In one model, based on the Holling Type II functional response, adaptive foraging produces a metastable low-

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Marcovina, Marco, and Bruno Pellero. "A Mathematical Analysis of Domestic Terrorist Activity in the Years of Lead in Italy." Peace Economics, Peace Science and Public Policy 21, no. 3 (August 1, 2015): 351–89. http://dx.doi.org/10.1515/peps-2014-0049.

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AbstractThe data-set of the casualties of terrorist attacks in the Years of Lead in Italy is analyzed in order to empirically test theoretical open issues about terrorist activity. The first is whether Richardson’s law holds true when the scale is narrowed down from global to only one epoch of domestic terrorism in a single country. It is found that the power law is a plausible model. Then, the distribution of the inter-arrival times between two consecutive strikes is investigated, finding (weaker) indications that also for this parameter a power law is a plausible model and that this is the r

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Sanin-Villa, Daniel. "Recent Developments in Thermoelectric Generation: A Review." Sustainability 14, no. 24 (December 15, 2022): 16821. http://dx.doi.org/10.3390/su142416821.

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The world’s growing energy demand poses several concerns regarding the rational and efficient use of energy resources. This is also the case for many industrial processes, where energy losses and particularly thermal losses are common. Thermoelectric generators offer an alternative to address some of these challenges by recovering wasted heat and thereby increasing the overall efficiency of these processes. However, the successful operation of the thermoelectrical modules meant to carry this process is only possible when pairing these to an external control system; such a system plays an impor

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Lau, Henry. "Monitoring Quality of Components by Fuzzy Control Principle." International Journal of Reliability, Quality and Safety Engineering 05, no. 02 (June 1998): 133–45. http://dx.doi.org/10.1142/s0218539398000145.

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A fuzzy expert system uses fuzzy logic control,1 which is based on a "superset" of Boolean logic that has been extended to handle the concept of "partial truth." It replaces mathematical models with models that are built from a number of rules with fuzzy variables such as output temperature, and fuzzy terms such as extremely hot, fairly cold. A fuzzy expert system has been implemented in a plastic moulding shop in Australia for monitoring dimensional quality of output products. Because these plastic parts are used as assembly components for production of gear boxes, their dimensional accuracy

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Palii, O. S., E. O. Lapkhanov, and D. S. Svorobin. "Model of distributed space power system motion control." Technical mechanics 2022, no. 4 (December 15, 2022): 35–50. http://dx.doi.org/10.15407/itm2022.04.035.

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The goal of this article is to develop a generalized mathematical model for controlling the motion of the spacecraft of a space industrial platform’s distributed power system. Space industrialization is one of the promising lines of industrial development in the world. The development of space industrial technologies will allow one to solve a number of problems in the production of unique products unavailable under terrestrial conditions. The main types of these products include semiconductor materials, materials made by 3D printing in microgravity, space modules of sunshade systems, space met

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Sun and Gao. "Short-Term Wind Speed Prediction Based on Variational Mode Decomposition and Linear–Nonlinear Combination Optimization Model." Energies 12, no. 12 (June 17, 2019): 2322. http://dx.doi.org/10.3390/en12122322.

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Wind power, one of renewable energy resources, is a fluctuating source of energy that prevents its further participation in the power market. To improve the stability of the wind power injected into the power grid, a short-term wind speed predicting model is proposed in this work, named VMD-P-(ARIMA, BP)-PSOLSSVM. In this model, variational mode decomposition (VMD) is combined with phase space reconstruction (P) as data processing method to determine intrinsic mode function (IMF) and its input–output matrix in the prediction model. Then, the linear model autoregressive integrated moving averag

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OVCHYNNIKOVA, OLENA, and GRAZYNA KACICKA. "TREND MODELS OF FOREST INDUSTRY INDICATORS." MODELING THE DEVELOPMENT OF THE ECONOMIC SYSTEMS 2, no. 2 (August 2021): 25–32. http://dx.doi.org/10.31891/mdes/2021-2-4.

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The article analyzes the main indicators of the forest industry of Ukraine and Khmelnytsky region. The state of timber harvesting by types of products is shown, it is noted that since 2017 there is no financing of the forest industry by the state, so forestries have to manage independently from their own sources. The paper considers the problem of modeling the indicators of the forest industry of the regions with the help of economic and mathematical methods and models. Trend models have been chosen as a research tool, with the help of which the equations of power, logistic, exponential depend

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Yang, Ming, Dajin Wang, and Nikolaos Bourbakis. "Optimization of Power Allocation in Multimedia Wireless Sensor Networks." International Journal of Monitoring and Surveillance Technologies Research 1, no. 1 (January 2013): 56–68. http://dx.doi.org/10.4018/ijmstr.2013010104.

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Wireless Sensor Networks (WSN) have been widely applied in monitoring and surveillance fields in recent years and have dramatically changed the methodologies and technologies in monitoring and surveillance. However, the sensor nodes in WSN have very limited computing resources and power supply, and thus the maximization of network life is a very critical issue. In the newly-emerging Wireless Multimedia Sensor Network (WMSN), the high volume of sensed video data needs to be compressed before transmission. Different video coding schemes have been developed and applied to wireless multimedia sens

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Zhao, Lei, and Greg You. "Brown Coal in Victoria, Australia and Maddingley Brown Coal Open Cut Mine Batter Stability." Journal of Civil Engineering and Construction 9, no. 3 (August 15, 2020): 109–18. http://dx.doi.org/10.32732/jcec.2020.9.3.109.

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Brown coal is young, shallowly deposited, and widely distributed in the world. It is a fuel commonly used to generate electricity. This paper first reviews the resources and characteristics of brown coal in Victoria, Australia, and its exploitation and contribution to the economy or power supply in Victoria. Due to the shallow depth of the brown coal seam, e.g. very favorable stripping ratio, open pit mining is the only mining method used to extract the coal at low cost for power generators. With the large-scale mining operations, cases of batter failure were not rare in the area. From the com

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Kudelina, Karolina, Toomas Vaimann, Bilal Asad, Anton Rassõlkin, Ants Kallaste, and Galina Demidova. "Trends and Challenges in Intelligent Condition Monitoring of Electrical Machines Using Machine Learning." Applied Sciences 11, no. 6 (March 19, 2021): 2761. http://dx.doi.org/10.3390/app11062761.

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A review of the fault diagnostic techniques based on machine is presented in this paper. As the world is moving towards industry 4.0 standards, the problems of limited computational power and available memory are decreasing day by day. A significant amount of data with a variety of faulty conditions of electrical machines working under different environments can be handled remotely using cloud computation. Moreover, the mathematical models of electrical machines can be utilized for the training of AI algorithms. This is true because the collection of big data is a challenging task for the indu

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Wang, Jin, Yinke Dou, Guangyu Zuo, Musheng Lan, Xiaomin Chang, Bo Yang, Zhiheng Du, Miaoyuan Yu, and Qingyang Mao. "Application and effect analysis of renewable energy in a small standalone automatic observation system deployed in the polar regions." AIP Advances 12, no. 12 (December 1, 2022): 125218. http://dx.doi.org/10.1063/5.0128256.

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Considering the difficulty of power supply for automatic observation equipment in the polar regions, this paper introduced a small standalone renewable energy system with wind–solar co-generation as the energy supply scheme. Mathematical models were given, including solar photovoltaic panels, wind turbines, solar irradiance, wind energy density, and renewable energy assessment. ERA-Interim atmospheric reanalysis data were used to evaluate solar energy resources, and the synergistic effect of wind–solar resources on renewable energy was also analyzed and discussed. The system composition of the

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Sharaevsky, І. G., Т. S. Vlasenko, L. B. Zimin, А. V. Nоsоvskyi, N. М. Fіаlkо, and G. І. Sharaevsky. "Prospective Directions of Increasing Operating Reliability and Providing Operational Management of the NPP Main Equipment Resources." Nuclear Power and the Environment 22, no. 3 (2021): 3–13. http://dx.doi.org/10.31717/2311-8253.21.3.1.

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On the basis of generalization tendencies of safety problems development concerning the basic types of water-cooled power nuclear reactors, the analysis of a condition of the corresponding researches and own scientific experience the most important scientific and practical directions are formulated and the complex of the priority scientific and technical problems connected with maintenance of reliability and prolongation existing and promising nuclear power plants. The main shortcomings of the existing systems of control and diagnostics of complex multifactor neutron-physical, thermohydraulic

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Pankiv, Oleh. "The concepts and features of the models of venture investment of energy-oriented startups." Socio-Economic Problems of the Modern Period of Ukraine, no. 4(138) (2019): 74–78. http://dx.doi.org/10.36818/2071-4653-2019-4-12.

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The theoretical and methodological principles of promising managerial decisions concerning the efficiency of attracting financial resources, as well as creation of fundamentally new sources of funding for the development of energy-oriented start-ups are considered. The role and place of the sectors of innovative energy saving and alternative sources of power supply in a complex system of energy independence of the country are determined. The way and the main directions of research and development of the ways to solve the aforementioned problem are outlined. As part of the search for optimizati

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Yang, Yajing. "A Grey Prediction Algorithm for Enterprise Human Resource Management Validity Model Construction and Improvement." Security and Communication Networks 2022 (July 8, 2022): 1–11. http://dx.doi.org/10.1155/2022/2023610.

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With the deepening development of economic globalization and world economic integration, all enterprises are faced with an increasingly complex and competitive living environment. Therefore, it is particularly important to formulate a human resource strategy suitable for the enterprise’s own development to cope with the external challenges and external competition of the enterprise. However, in the current management practice of state-owned enterprises including power supply enterprises in our country, it is rare to make strategic decisions on human resources by applying scientific, effective,

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Nigim, K. A., M. M. A. Salama, and M. Kazerani. "Solving Polynomial Algebraic Equations of the Stand Alone Induction Generator." International Journal of Electrical Engineering & Education 40, no. 1 (January 2003): 45–54. http://dx.doi.org/10.7227/ijeee.40.1.5.

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This paper describes the use of MathCAD's solving block which uses ‘Given’ and ‘Find’ built-in functions to solve nth order nonlinear algebraic equations. Introducing complex energy systems to electrical engineering students in their undergraduate studies is essential to complement many energy conversion courses. Various electric energy-capturing schemes use electric equivalent circuit models that incorporate nonlinear elements with complex mathematical formulas requiring numerical computation. Without incorporating programming tools, the taught material could be vague and a burden for both th

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Maksymenko-Sheiko, Kyrylo V., Tetiana I. Sheiko, Denys O. Lisin, and Nykyta D. Petrenko. "Mathematical and Computer Modeling of the Forms of Multi-Zone Fuel Elements with Plates." Journal of Mechanical Engineering 25, no. 4 (December 30, 2022): 32–38. http://dx.doi.org/10.15407/pmach2022.04.032.

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Seeing the significant increase in the number of nuclear power plants, as well as models and modifications of nuclear reactors, it becomes important to find out/establish the advantages of certain plants. At the same time, designers face a number of questions for which optimal solutions have not yet been found. At nuclear plants, there is the largest turnover of financial funds and the smallest gain in economy brings huge profits, but one should not forget about reliability and costs during the plant construction. This is a complex problem that is solved at the design stage. Calculations of th

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Barbosa, J. P. W., W. Balmant, C. H. Matiolo, A. B. Mariano, and J. V. C. Vargas. "MODELING AND SIMULATION OF COMPRESSION-IGNITION INTERNAL COMBUSTION ENGINES’ EMISSIONS PRODUCED BY DIESEL AND BIODIESEL MIXTURES." Revista de Engenharia Térmica 20, no. 4 (February 9, 2022): 10. http://dx.doi.org/10.5380/reterm.v20i4.84640.

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Biofuels have been identified as possible solutions to the problems caused by the usage of fossil fuels in energy production. Although they generally produce fewer emissions, there are indications that engines powered with biodiesel mixtures emit pollutants such as nitrogen oxides in greater quantities than when powered by fossil diesel. So, further investigation on the emissions produced by these two fuels is needed, with the goal of best knowing what kind of harm to the environment each one of those is causing. One of the best tools available for expanding any subject’s comprehension, withou

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Barbosa, J. P. W., W. Balmant, C. H. Matiolo, A. B. Mariano, and J. V. C. Vargas. "MODELING AND SIMULATION OF COMPRESSION-IGNITION INTERNAL COMBUSTION ENGINES’ EMISSIONS PRODUCED BY DIESEL AND BIODIESEL MIXTURES." Revista de Engenharia Térmica 20, no. 4 (February 9, 2022): 10. http://dx.doi.org/10.5380/reterm.v20i4.84640.

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Biofuels have been identified as possible solutions to the problems caused by the usage of fossil fuels in energy production. Although they generally produce fewer emissions, there are indications that engines powered with biodiesel mixtures emit pollutants such as nitrogen oxides in greater quantities than when powered by fossil diesel. So, further investigation on the emissions produced by these two fuels is needed, with the goal of best knowing what kind of harm to the environment each one of those is causing. One of the best tools available for expanding any subject’s comprehension, withou

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Saeed, Muhammad Hammad, Wang Fangzong, and Basheer Ahmed Kalwar. "Control of Bidirectional DC-DC Converter for Micro-Energy Grid’s DC Feeders' Power Flow Application." International Journal of Renewable Energy Development 11, no. 2 (March 15, 2022): 533–46. http://dx.doi.org/10.14710/ijred.2022.41952.

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Concerns about fuel exhaustion, electrical energy shortages, and global warming are growing due to the global energy crisis. Renewable energy-based distributed generators can assist in meeting rising energy demands. Micro-energy grids have become a research hotspot as a crucial interface for connecting the power produced by renewable energy resources-based distributed generators to the power system. The integration of micro-energy grid technology at the load level has been the focus of recent studies. Direct Current Micro-energy-grids have been one of the major research fields in recent years

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Rahman, Ismail Abdul, Aftab Hameed Memon, Nor Hazana Abdullah, and Ade Asmi Abdul Azis. "Application of PLS-SEM to Assess the Influence of Construction Resources on Cost Overrun." Applied Mechanics and Materials 284-287 (January 2013): 3649–56. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.3649.

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Being resource-driven industry, success and failure of construction projects highly depend on resources. As construction industry is now-a-days facing major problem of cost overrun worldwide, this can be contributed by construction resource issues. Hence, this study aimed to assess impact of construction resource on project cost overrun. Structured questionnaire survey was carried out to understand the perception of construction practitioners. A total of 106 samples were collected. Partial Least Square (PLS) of Structural Equation Modeling (SEM) approach regarded as the graphical equivalent of

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Motovilov, A. I., and I. I. Solovejev. "Online electric network capacity assesment." Power engineering: research, equipment, technology 22, no. 3 (September 8, 2020): 51–59. http://dx.doi.org/10.30724/1998-9903-2020-22-3-51-59.

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Reliability of power supply to consumers and the efficient use of energy resources are priority tasks in the process of operational dispatch control of the energy system. Limitations of the throughput capacity of the electric network increases the value of the non-released power reserve, which in case of violation of the normal mode at one electric power facility can lead to a system accident. The aim of the work is to develop an algorithm for assessing the throughput of the electric network. In this study of the steady-state operating modes of the power system, a method is proposed for online

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Kalinin, Igor, Maria Ivanova, Leonid Pautov, and Artem Rudetskiy. "Computer model of the ship's dynamic positioning system." Transactions of the Krylov State Research Centre 4, no. 394 (November 27, 2020): 109–20. http://dx.doi.org/10.24937/2542-2324-2020-4-394-109-120.

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Object and purpose of research. The object of the research is the dynamic positioning system of a vessel with electric propulsion, the purpose is to create a computer tool for debugging the algorithms for the operation of control system for the ship’s dynamic positioning. Materials and methods. The indigenous simulation environment SimInTech is used. The model of vessel’s plane-parallel motion and methods of complex technical objects computer modeling are used. Main results. The concept and computer model of the ship technical means control system in the domestic modeling environment, mathemat

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Montenegro, Davis, and Roger Dugan. "Simplified A-Diakoptics for Accelerating QSTS Simulations." Energies 15, no. 6 (March 11, 2022): 2051. http://dx.doi.org/10.3390/en15062051.

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The spread of distributed energy resources (DERs) across the distribution power system demands complex planning studies based on quasi-static-time-series (QSTS) simulations, requiring a significant amount of computing time to complete, leading planners to look for alternatives to QSTS. Diakoptics based on actors (A-Diakoptics) is a technique for accelerating simulations combining two computing techniques from different engineering fields: diakoptics and the actor model. Diakoptics is a mathematical method for tearing networks, reducing their complexity by using smaller subcircuits that can be

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Pali, Pranali, Abhishek Jain, Pooja Kyadarkunte, Sampada Patil, Shruti Jais, Rajesh Nasare, and Sharda Chhabria. "Drug Discovery Using Machine Learning and Data Analysis." International Journal for Research in Applied Science and Engineering Technology 10, no. 11 (November 30, 2022): 1177–83. http://dx.doi.org/10.22214/ijraset.2022.47504.

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Abstract: An objective of drug discovery is to identify novel substances with certain chemical properties for the treatment of diseases. A significant amount of biological data has been produced recently from a variety of sources. Using this data, molecular analysis has been used to determine the most successful treatments. Trial-and-error medicine is frequently frustrating and significantly more expensive. This makes it easier to complete the work by predicting whether a drug will be active or not. The information about the drug can also be used to develop new medications. Quantitative Struct

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