Journal articles: 'Electric power distribution system'

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Mustafa, Sameer, Mohammed Yasen, and Hussein Abdullah. "Evaluation of Electric Energy Losses in Kirkuk Distribution Electric System Area." Iraqi Journal for Electrical and Electronic Engineering 7, no. 2 (December 1, 2011): 144–50. http://dx.doi.org/10.37917/ijeee.7.2.10.

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Correct calculations of losses are important for several reasons. There are two basic methods that can be used to calculate technical energy losses, a method based on subtraction of metered energy purchased and metered energy sold to customers and a method based on modeling losses in individual components of the system. For considering the technical loss in distribution system included: transmission line losses, power transformer losses, distribution line losses and low-voltage transformer losses. This work presents an evaluation of the power losses in Kirkuk electric distribution system area and submit proposals and appropriate solutions and suggestions to reduce the losses. A program under Visual Basic was designed to calculate and evaluate electrical energy losses in electrical power systems.

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Anteneh, Degarege. "Reliability Assessment of Distribution System Using Analytical Method: A Case Study of Debre Berhan Distribution Network." Journal of Informatics Electrical and Electronics Engineering (JIEEE) 1, no. 1 (April 25, 2020): 1–9. http://dx.doi.org/10.54060/jieee/001.01.002.

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Electric power delivers a predicable per condition for the technological, economic and political development of any countries and it is vital for each individual. Power outage is serious problem in Ethiopia at the whole of distribution network. This is due to most interruptions are frequently and much time service restoration, that is why most customers of Ethiopia their day to day activities highly affected and they are strongly complain to Ethiopia electric utility. But this power outage affected the cost of customer and Ethiopian utility. Power system is to provide an adequate and security electrical addressing to its demands as economically as alternative with reasonable level of reliability. Most electrical power distribution system reliability is one of the major issues for the demands. Reliability is the chance that a network or components done their assigned task for a given period of time under the working time stumbled upon during its anticipated lifetime. Most of developing country including Ethiopia electric power distribution network has received considerably less of the attention to reliability designing and evaluation than have generating and transmitting systems. Now a day life is directly or indirectly depends on electric power so that utility should deliver reliable power every day for 24 hours and each year for 8760 hours to satisfy human needs and to perform their works as much as possible with less economy.

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Meinecke, Steffen, Leon Thurner, and Martin Braun. "Review of Steady-State Electric Power Distribution System Datasets." Energies 13, no. 18 (September 15, 2020): 4826. http://dx.doi.org/10.3390/en13184826.

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Publicly available grid datasets with electric steady-state equivalent circuit models are crucial for the development and comparison of a variety of power system simulation tools and algorithms. Such algorithms are essential to analyze and improve the integration of distributed energy resources (DERs) in electrical power systems. Increased penetration of DERs, new technologies, and changing regulatory frameworks require the continuous development of the grid infrastructure. As a result, the number and versatility of grid datasets, which are required in power system research, increases. Furthermore, the used grids are created by different methods and intentions. This paper gives orientation within these developments: First, a concise overview of well-known, publicly available grid datasets is provided. Second, background information on the compilation of the grid datasets, including different methods, intentions and data origins, is reviewed and characterized. Third, common terms to describe electric steady-state distribution grids, such as representative grid or benchmark grid, are assembled and reviewed. Recommendations for the use of these grid terms are made.

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Olajuyin, E. A., and Olubakinde Eniola. "MICROGRID IN POWER DISTRIBUTION SYSTEM." International Journal of Research -GRANTHAALAYAH 7, no. 8 (July 23, 2020): 387–93. http://dx.doi.org/10.29121/granthaalayah.v7.i8.2019.687.

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Power is a very important instrument to the development of economy of a nation and it must be stable and available and to meet the demand of the consumers at all times. The quest for power supply has introduced a new technology called microgrid. Micro grids are regarded as small power systems that confine electric energy generating facilities, from both renewable energy sources and conventional synchronous. Generators, and customer loads with respect to produced electric energy. It can be connected to grid or operate in islanding mode. On the other hand, the grid’s dynamics and its stability rely on the amount of stored energy in the micro grid. In a conventional power system with a large number of synchronous generators as the main sources of energy, the mechanical energy in the generators’ rotors, in the form of kinetic energy, serves as the stored energy and feeds the grids in the event of any drastic load changes or if disturbances occur. Microgrid is an alternative idea to support the grid, it can be applied in a street, estates, community or a locality (towns and villages), organizations and establishments. Load forecasting can be further extended to Organizations, Local Government, State and country to determine the energy consumption.

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Davidson, Rachel A., Haibin Liu, Isaac K. Sarpong, Peter Sparks, and David V. Rosowsky. "Electric Power Distribution System Performance in Carolina Hurricanes." Natural Hazards Review 4, no. 1 (February 2003): 36–45. http://dx.doi.org/10.1061/(asce)1527-6988(2003)4:1(36).

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Valerio, Antonio. "Visualization System Integrated for Electric Power Distribution Networks." IEEE Latin America Transactions 8, no. 6 (December 2010): 728–33. http://dx.doi.org/10.1109/tla.2010.5688102.

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Chamoso, Pablo, Fernando De La Prieta, and Gabriel Villarrubia. "Intelligent system to control electric power distribution networks." ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal 4, no. 4 (December 22, 2015): 1–8. http://dx.doi.org/10.14201/adcaij20154418.

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The use of high voltage power lines transport involves some risks that may be avoided with periodic reviews as imposed by law in most countries. The objective of this work is to reduce the number of these periodic reviews so that the maintenance cost of power lines is also reduced. To reduce the number of transmission towers (TT) to be reviewed, a virtual organization (VO) based system of agents is proposed in conjunction with different artificial intelligence methods and algorithms. This system is able to propose a sample of TT from a selected set to be reviewed and to ensure that the whole set will have similar values without needing to review all the TT. As a result, the system provides a software solution to manage all the review processes and all the TT of Spain, allowing the review companies to use the application either when they initiate a new review process for a whole line or area of TT, or when they want to place an entirely new set of TT, in which case the system would recommend the best place and the best type of structure to use.

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Xu, Sheng You, Min You Chen, Neal Wade, and Ran Li. "Reliability Evaluation of Electric Power System Containing Distribution Generation." Advanced Materials Research 383-390 (November 2011): 3472–78. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3472.

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The application of renewable energy in electric power system is growing rapidly due to enhanced public concerns for adverse environmental impacts and escalation in energy costs associated with the use of conventional energy sources, distribution generation (DG) is recognized as an encouraging and cost effective generation source both in large grid connected systems and small isolated applications. Power output from distribution generation is not readily controllable. High distribution generation penetration can lead to high-risk levels in power system reliability and stability. In order to maintain the system reliability and stability, this paper presents a probabilistic evaluation method that can incorporate the impacts on reliability of new energy utilization in electric power systems. Two procedures designated as equivalent simplifying method and the islanded reliability calculating method are proposed and discussed. In the equivalent simplifying method, the equivalent failure rate and failure during time for a given system at a specified reliability level is determined using system equivalent simplifying. In the islanded probability calculating method, the islanded probability at a load point for a given system containing distribution generation is calculated. The analysis results of example show that the probabilistic evaluation method is feasible for the operator to decide the appreciate capability and detailed location of possible distribution generation in electric power systems, and consequently a desired level of reliability is obtained.

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Kim, H., Y. Ko, and S. Shon. "An Expert System for the Electric Power Distribution System Design." IFAC Proceedings Volumes 22, no. 9 (August 1989): 483–88. http://dx.doi.org/10.1016/s1474-6670(17)53317-0.

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10

Diamenu, Godwin. "Statistical Analysis of Electric Power Distribution Grid Outages." European Journal of Engineering and Technology Research 6, no. 3 (April 12, 2021): 27–33. http://dx.doi.org/10.24018/ejers.2021.6.3.2406.

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Power systems in general supply consumers with electrical energy as economically and reliably as possible. Reliable electric power systems serve customer loads without interruptions in supply voltage. Electric power generation facilities must produce enough power to meet customer demand. Electrical energy produced and delivered to customers through generation, transmission and distribution systems, constitutes one of the largest consumers markets the world over. The benefits of electric power systems are integrated into the much faster modern life in such extent that it is impossible to imagine the society without the electrical energy. The rapid growth of electric power distribution grids over the past few decades has resulted in a large increment in the number of grid lines in operation and their total length. These grid lines are exposed to faults as a result of lightning, short circuits, faulty equipment, mis-operation, human errors, overload, and aging among others. A fault implies any abnormal condition which causes a reduction in the basic insulation strength between phase conductors or phase conductors and earth, or any earthed screens surrounding the conductors. In this paper, different types of faults that affected the electric power distribution grid of selected operational districts of Electricity Company of Ghana (ECG) in the Western region of Ghana was analyzed and the results presented. Outages due to bad weather and load shedding contributed significantly to the unplanned outages that occurred in the medium voltage (MV) distribution grid. Blown fuse and loose contact faults were the major contributor to unplanned outages in the low voltage (LV) electric power distribution grid.

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Kumar, Pawan. "Load Characteristics of Electric System for Distributing Power on Locality Based Criterion." Bonfring International Journal of Power Systems and Integrated Circuits 4, no. 4 (November 30, 2014): 39–42. http://dx.doi.org/10.9756/bijpsic.10335.

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Mishra, M., and P. K. Modi. "Performance improvement of Electric Power Distribution System Using DG." Distributed Generation & Alternative Energy Journal 31, no. 4 (September 2016): 50–68. http://dx.doi.org/10.1080/21563306.2016.11781080.

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13

Nazaruddin, Mahalla, Fauzi, Maimun, Subhan, Said Abubakar, and Sayed Aiyub. "Reliability Analysis of 20 KV Electric Power Distribution System." IOP Conference Series: Materials Science and Engineering 854 (July 2, 2020): 012007. http://dx.doi.org/10.1088/1757-899x/854/1/012007.

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Reiman, Andrew P., Thomas E. McDermott, Murat Akcakaya, and Gregory F. Reed. "Electric Power Distribution System Model Simplification Using Segment Substitution." IEEE Transactions on Power Systems 33, no. 3 (May 2018): 2874–81. http://dx.doi.org/10.1109/tpwrs.2017.2753100.

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15

Wan, Fei, Pratik Madhika, Justin Chwa, Mohammad Mozumdar, and Alireza Ameri. "Automatic Optimal Synthesis of Aircraft Electric Power Distribution System." International Journal of Computing and Digital Systems 9, no. 3 (May 1, 2020): 363–75. http://dx.doi.org/10.12785/ijcds/090303.

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16

Song, Hong, Xiao Hui Zeng, and Wei Peng Zhou. "The Software Design for an Automation Intelligent Distribution Terminal Unit in Electric Power Systems Based on C and Assembly Language." Advanced Materials Research 676 (March 2013): 302–5. http://dx.doi.org/10.4028/www.scientific.net/amr.676.302.

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Electric power distribution systems play an important role in electric power systems, in which automation intelligent distribution terminal units are critical for the performance of power distribution systems. The software of an automation intelligent electric power distribution terminal unit based on digital signal processor is designed in the paper, a way of admixture programming with C language and assembly language. In this manner, real-time requirement on the electric power distribution system will be satisfied, the reliability and stability of the software are ensured as while. It has a broad application prospects in electric power systems.

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Goh, Hui Hwang, Sy yi Sim, Dahir Khere Diblawe, Mortar Mohamed Ali, Chin Wan Ling, Qing Shi Chua, and Kai Chen Goh. "Energy Power Plant in Electric Power Distribution Systems Equipping With Distance Protection." Indonesian Journal of Electrical Engineering and Computer Science 8, no. 1 (October 1, 2017): 192. http://dx.doi.org/10.11591/ijeecs.v8.i1.pp192-198.

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<p>This paper suggests the theory of distance protection criteria in power distribution systems for power plant generation. Multi-developed countries have energy power plants that placed in remote areas which are far from the grid line. Hence, they should be coupled to the low power transportation systems necessarily. While higher-rating relays are adopted to preserve feeders at power substations, fuses are merely obtainable outside on feeder channel. The safe system process, space protection is dispatched to save feeders. In this review, feeders with distance relays are equipped, together with over-current protection relays and fuses. Energy power plant having distance protection system is designed the implemented system was a 6-MW unit of compressed power energy reproduction. The sample feeder was shortened to be equal four-bus experiment feeder for transmitting resolution. The fault currents have chances adopted to form protecting regions of distance relays. Protection of the power line through the designed power plants for distance relaying can decrease problem in relay location because of the impedance-based location of the distance relay. </p>

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Oyetunji S.A., Oyetunji S. A. "Adaptability of Distribution Automation System to Electric Power Quality Monitoring In Nigeria Power Distribution Network." IOSR Journal of Electrical and Electronics Engineering 6, no. 1 (2013): 14–21. http://dx.doi.org/10.9790/1676-0611421.

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19

YASUDA, KENJI. "Superconducting Technology for Electric Power System: Superconducting Power Transmission and Distribution Equipment." Journal of the Institute of Electrical Engineers of Japan 124, no. 7 (2004): 405–10. http://dx.doi.org/10.1541/ieejjournal.124.405.

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Sumba, Edison Fabián Sumba, Angel Victor Sumba Sumba, Guillermo Antonio Loor Castillo, and Jesus Alberto Pérez Rodríguez. "Impact of distributed generation in the electrical system of Ecuador." International journal of physical sciences and engineering 4, no. 1 (February 6, 2020): 1–10. http://dx.doi.org/10.29332/ijpse.v4n1.389.

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Decentralized generation today assumes a very important role in the stability of electric power, especially in rural areas where electric power supplied by large Power plants, is delivered to points of consumption with a poor quality of energy this due to the distance that is found, from the generation to the final consumer, the implementation of the GD is directly related to the increase in the quality of electric energy as well as providing flexibility to the electrical distribution system. The deployment of distributed generation in electricity distribution networks can potentially increase their reliability and reduce the cost of power, by installing energy sources closer to the demand or consumption points. This type of generation involves a great variety of energy sources, such as; wind, solar, hydraulic, fossil fuels, biomass, among others.

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Su, Qiang, Peng Xu, and Wei Xiong. "Application in Aerospace Experiment Field for Intelligent Power Supply and Distribution Monitoring System." Advanced Materials Research 516-517 (May 2012): 1322–25. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1322.

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According to applying feature of power supply and distribution system in aerospace experiment field, the intelligent monitoring system is designed by adopting hierarchical distributed network structure which includes field layer, network layer, management layer, and command center layer. The monitoring software based on configuration software realized such functions as unify electric force management, optimize electric force balance, economize electrical energy loss, extend lifetime of equipments, improve qualities of environment protection, promote efficiency and managing level. Applying result indicates: the system satisfies the requirement of aero experimenting task.

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Sunthrasakaran, Nishanthi, Nor Akmal Mohd Jamail, Qamarul Ezani Kamarudin, and Sujeetha Gunabalan. "Analysis of Electric Field and Current Density for Different Electrode Configuration of XLPE Insulation." International Journal of Engineering & Technology 7, no. 3.36 (May 6, 2018): 127. http://dx.doi.org/10.14419/ijet.v7i3.36.29092.

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The most important aspect influencing the circumstance and characteristics of electrical discharges is the distribution of electric field in the gap of electrodes. The study of discharge performance requires details on the variation of maximum electric field around the electrode. In electrical power system, the insulation of high voltage power system usually subjected with high electric field. The high electric field causes the degradation performance of insulation and electrical breakdown start to occur. Generally, the standard sphere gaps widely used for protective device in electrical power equipment. This project is study about the electric field distribution and current density for different electrode configuration with XLPE barrier. Hence, the different electrode configuration influences the electric field distribution. This project mainly involves the simulation in order to evaluate the maximum electric field for different electrode configuration. Finite Element Method (FEM) software has been used in this project to perform the simulation. This project also discusses the breakdown characteristics of the XLPE. The accurate evaluation of electric field distribution and maximum electric field is an essential for the determination of discharge behavior of high voltage apparatus and components. The degree of uniformity is very low for pointed rod-plane when compared to other two electrode configurations. The non- uniform electric distribution creates electrical stress within the surface of dielectric barrier. As a conclusion, when the gap distance between the electrodes increase the electric field decrease.

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Tretyakov, Evgeny. "Advanced methods of transportation and distribution of electrical power in smart power grids of railways." MATEC Web of Conferences 239 (2018): 01010. http://dx.doi.org/10.1051/matecconf/201823901010.

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The relevance of the work is determined by the need to improve the electrical distribution grids of railways on the basis of digital technologies. The article presents advanced methods of transportation and distribution of electric power in smart power grids of railways based on multi-agent control. The analysis of the power supply system for stationary railroad consumers was performed and advanced ways of their development were defined. These methods should provide increased speed, adaptive determination of restrictions on using electric power equipment, management of mode parameters, sectioning and power flow modes in electrical distribution grids, restoration of power supply after emergency events. The method of adaptive control of transportation and distribution of electric energy in the power supply system of stationary railway consumers is developed based on the hierarchical structure of IEC 61850. This method takes into account the coordination of managing and local controllers in the data exchange environment, the control results and the variable area of responsibility of controllers and their division according to their functional purpose based on the multi-agent approach. The method of power flow control was developed to reduce power losses, increase the capacity of transport channels and ensure the restoration of the normal mode of the electric network by reconfiguring it and controlling active elements based on graph theory. The method takes into account the expected daily load curve, limits on the demand for capacity by active consumers and the possibility of a closed mode of electrical network operation through controlled cross-sections. The simulation results presented on the test circuit have showed the feasibility and efficiency of the proposed approaches.

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Alkhanafseh, Yousef Marwan, and Tahir Cetin Akinci. "A Python-Based Interface Design for Electric Power System Education." International Journal of Smart Grid and Sustainable Energy Technologies 4, no. 1 (May 1, 2021): 163–68. http://dx.doi.org/10.36040/ijsgset.v4i1.3905.

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Python, which is widely used today, is one of the open-source programming languages. In the Python program, its interface is done through the PyQt5 library. With PyQt5, it is possible to develop object-based software that takes up less space on the disk and runs faster. In this study, an educational calculation and analysis program (ITUPSA) was designed for the Electric power systems course using the Python interface. Electric power systems are one of the fundamental courses in electrical engineering. This main course is taught in three sub-course groups as energy transmission-distribution, energy flow and energy economy. The energy transmission-distribution course package constitutes the first and most comprehensive part of the electric power systems group. In the energy transmission-distribution, the creation of the transmission line model and the calculation of the line parameters form an important part of the training. This section contains very detailed mathematical calculations and it is very important that students get the correct result as a result of these calculations. This can be possible with a lot of practice. The interface design was made by students and faculty to teach practical examples correctly. This developed (ITUPSA) python-based interface program is very suitable for calculation and analysis exercises in both undergraduate and graduate courses in the Electrical Engineering department. The purpose of this study is to create a python-based interface in order to solve the problems related to these lines, to make the types of short, medium and long power transmission lines correct and understandable. In the study, after selecting the type of energy transmission line and all parameters related to the line, the necessary mathematical analysis can be made and also the analysis results can be plotted. The analysis program is available in two languages, English and Turkish.

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Sano, Tsuneyo, Itsuko Tezuka, and Yoshihiro Fukuda. "The Load Forecasting Technology in the Electric Power Distribution System." IEEJ Transactions on Power and Energy 124, no. 6 (2004): 824–34. http://dx.doi.org/10.1541/ieejpes.124.824.

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Arai, Yasuhiro, Toshiki Horie, Akira Koizumi, Toyono Inakazu, Atsushi Masuko, Satoshi Tamura, and Takashi Yamamoto. "Research on minimizing electric power usage in water distribution system." Journal of Water Supply: Research and Technology-Aqua 63, no. 2 (October 24, 2013): 170–76. http://dx.doi.org/10.2166/aqua.2013.013.

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Krishnan, Venkat, Bruce Bugbee, Tarek Elgindy, Carlos Mateo, Pablo Duenas, Fernando Postigo, Jean-Sebastien Lacroix, Tomas Gomez San Roman, and Bryan Palmintier. "Validation of Synthetic U.S. Electric Power Distribution System Data Sets." IEEE Transactions on Smart Grid 11, no. 5 (September 2020): 4477–89. http://dx.doi.org/10.1109/tsg.2020.2981077.

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28

Williams, B. R. "Electric oasis [vanadium redox battery system in power distribution application]." Power Engineer 19, no. 1 (2005): 28. http://dx.doi.org/10.1049/pe:20050105.

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Sano, Tsuneyo, Itsuko Tezuka, and Yoshihiro Fukuda. "The load forecasting technology in the electric power distribution system." Electrical Engineering in Japan 153, no. 2 (2005): 14–27. http://dx.doi.org/10.1002/eej.20146.

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Rahmouni, Abdelkader. "Impact of static reactive power compensator (SVC) on the power grid." WSEAS TRANSACTIONS ON ELECTRONICS 11 (June 11, 2020): 96–104. http://dx.doi.org/10.37394/232017.2020.11.12.

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The work presented in this paper is a contribution to the problem of controlling the reactive powers and the voltages in an electrical network. Among these control tools, the static reactive power compensator (SVC) has been chosen because of its simplicity of control. The SVC is among the FACTS 'Alternative Flexible Current Transmission Systems' devices that help to deal with problems encountered in the operation of electrical networks either in the distribution side or in the transport side. In this work, the SVC is used to control the reactive power and the voltage in an electric power transmission network. In order to improve its efficiency, three voltage regulation systems have been chosen in the control system of this compensator.

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IONESCU, Violeta-Maria, Anca-Alexandra SĂPUNARU, MădălinaAndreea LUPAȘCU, Mihai Octavian POPESCU, and Claudia Laurența POPESCU. "Electromagnetic interaction between the power distribution grid and thE HV system of an electric vehicle." EMERG - Energy. Environment. Efficiency. Resources. Globalization 6, no. 3 (2020): 77–84. http://dx.doi.org/10.37410/emerg.2020.3.07.

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In the paper it will be presented the history of electric vehicles (EVs), compared to conventional combustion engine cars. Environmental impacts produced the necessity of a cleaner transportation by reintroducing electrical cars in the automotive market. By increasing the EVs used in transportation, the level of pollution is decreased, but some major issues concerning electromagnetic compatibility are raised. The ambient electromagnetic field was described, focusing on simulation of a MV power distribution line. Afterwards, it was analyzed the electromagnetic interaction between an electric vehicle and the power distribution line, simulating the magnetic field distribution.

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Shaqiri, Rexhep. "Reducing the Losses in the Electrical Power System of Kosovo by Implementation of New Type of Transformers in the Power Distribution System." Materials Science Forum 856 (May 2016): 331–36. http://dx.doi.org/10.4028/www.scientific.net/msf.856.331.

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This paper contains a strategy to minimize the power losses in the electrical distribution network of Kosovo. In order to develop the strategy, a model was constructed to simulate an electrical distribution network, and different parameters were included that helped in estimation of the technical power losses in the medium voltage (MV) distribution network. The main objective of this paper is to present approach to minimize technical and non-technical losses in power systems. The analysis of the Kosovo electric power system was performed by means of PSS/E 3.3 software. The results indicate options for reduction of the loses by replacement of old type of transformers and preparation of the MV system for upgrade and change the voltage level from 10 kV to 20 kV. As a first step new 110/10kV transformers can be installed, designed to be reconnected in the future to 110/20kV.

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Inoue, Jun, and Yasumasa Fujii. "Proposal of an Innovative Electric Power Distribution System based on Packet Power Transactions." IEEJ Transactions on Power and Energy 131, no. 2 (2011): 143–50. http://dx.doi.org/10.1541/ieejpes.131.143.

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Kirgizov, A. K., S. A. Dmitriev, M. Kh Safaraliev, D. A. Pavlyuchenko, A. H. Ghulomzoda, and J. S. Ahyoev. "Expert system application for reactive power compensation in isolated electric power systems." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (October 1, 2021): 3682. http://dx.doi.org/10.11591/ijece.v11i5.pp3682-3691.

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Effective electricity use can be an option which enables to achieve significant economy while generating and transmitting of electricity. One of the most important things is to improve the electricity quality through reactive power correction up to optimum values. The current article presents the solution to compensate the reactive power in the distribution networks, in GornoBadakhshan Autonomous Oblast (GBAO) with the use of the advanced technologies based on the data collection within real time. The article describes the methodology of fuzzy logic application and bio-heuristic algorithms for the suggested solution effectiveness to be determined. Fuzzy logic application to specify the node priority for compensating devices based on the linguistic matrix power loss and voltage gives the possibility to the expert to take appropriate solutions for compensating devices installation location to be determined. The appropriate (correct) determination of the compensating devices installation location in the electric power system ensures the effective regulation of the reactive power with the least economic costs. Optimization problems related to the active power loss minimization are solved as well as the cost minimization with compensating devices to ensure the values tan(φ) not exceeding 0.35 through reducing multi-objective problem to the single-objective one using linear convolution.

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Yang, Zhangang, Junchao Qu, Yingchuan Ma, and Xudong Shi. "Modeling and Simulation of Power Distribution System in More Electric Aircraft." Journal of Electrical and Computer Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/847624.

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The More Electric Aircraft concept is a fast-developing trend in modern aircraft industry. With this new concept, the performance of the aircraft can be further optimized and meanwhile the operating and maintenance cost will be decreased effectively. In order to optimize the power system integrity and have the ability to investigate the performance of the overall system in any possible situations, one accurate simulation model of the aircraft power system will be very helpful and necessary. This paper mainly introduces a method to build a simulation model for the power distribution system, which is based on detailed component models. The power distribution system model consists of power generation unit, transformer rectifier unit, DC-DC converter unit, and DC-AC inverter unit. In order to optimize the performance of the power distribution system and improve the quality of the distributed power, a feedback control network is designed based on the characteristics of the power distribution system. The simulation result indicates that this new simulation model is well designed and it works accurately. Moreover, steady state performance and transient state performance of the model can fulfill the requirements of aircraft power distribution system in the realistic application.

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Hong, Yan, Cai Hui, Wei Min Chen, and Li Qing. "Design of an IDC Power Three-Phase Equilibrium Distribution Soft-Switching System." Applied Mechanics and Materials 427-429 (September 2013): 721–24. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.721.

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To decrease the cost brought by the electric energy waste, a three-phase equilibrium distribution soft-switching system is proposed. The system guarantees three-phase equilibrium. Firstly, the inverter tracks the original access phase to be synchronous, then switch the electric equipment to the inverter. Secondly, the inverter tracks the alternative access phase to be synchronous, then switch the electric equipment to the alternative access phase to accomplish the soft-switching. Experiment is used to carry out verification for this system. The result shows that there is no impulse current when the electric equipment switches. The system achieves soft-switching.

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Naumov, Igor, Dmitriy Karamov, Alexander Tretyakov, Elvira Fedorinova, and Marina Yakupova. "Additional electric loss in rural distribution networks 0.38 kV." E3S Web of Conferences 209 (2020): 07007. http://dx.doi.org/10.1051/e3sconf/202020907007.

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The article presents calculations the additional electric loss in the case of three-phase voltage system unbalance in the real rural electrical distribution networks (0.38 kV). Measurements were carried out at substations that receive power from distribution substation “Petropavlovsk”. Measurements were carried out using a certified device “Resource-UF2M”. Also presented are graphs of changes in currents/voltages of the negative-sequence and zero-sequence, electric loss and other parameters. The results of the economic assessment of electricity losses are presented. As a result, the proposed method for reducing the power loss factor, that can reduce the losses of electricity.

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Bassam, Fadel, and Andrey Kryukov. "DIGITAL MODELS OF DISTRIBUTION ELECTRIC NETWORK OF IRAQ." Modern Technologies and Scientific and Technological Progress 2020, no. 1 (June 16, 2020): 187–88. http://dx.doi.org/10.36629/2686-9896-2020-1-187-188.

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The restoration and development of Iraq's electric power industry is planned to be carried out on the basis of the concept of intelligent electric networks (smart grid). To implement this concept, it is necessary to create integrated digital models of electrical networks. Such models can be implemented on the basis of methods and tools for modeling electric power systems in phase coordinates. The report presents the results of modeling normal and emergency modes of distribution electric networks of 11 kV.

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Blazakis, Konstantinos V., Theodoros N. Kapetanakis, and George S. Stavrakakis. "Effective Electricity Theft Detection in Power Distribution Grids Using an Adaptive Neuro Fuzzy Inference System." Energies 13, no. 12 (June 16, 2020): 3110. http://dx.doi.org/10.3390/en13123110.

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Electric power grids are a crucial infrastructure for the proper operation of any country and must be preserved from various threats. Detection of illegal electricity power consumption is a crucial issue for distribution system operators (DSOs). Minimizing non-technical losses is a challenging task for the smooth operation of electrical power system in order to increase electricity provider’s and nation’s revenue and to enhance the reliability of electrical power grid. The widespread popularity of smart meters enables a large volume of electricity consumption data to be collected and new artificial intelligence technologies could be applied to take advantage of these data to solve the problem of power theft more efficiently. In this study, a robust artificial intelligence algorithm adaptive neuro fuzzy inference system (ANFIS)—with many applications in many various areas—is presented in brief and applied to achieve more effective detection of electric power theft. To the best of our knowledge, there are no studies yet that involve the application of ANFIS for the detection of power theft. The proposed technique is shown that if applied properly it could achieve very high success rates in various cases of fraudulent activities originating from unauthorized energy usage.

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Suprianto. "The Implementation of ATS (Automatic Transfer Switch) System Between Solar Power Plants and Grid Systems for the Household Electric Power Service to Maintain Sustainability and Save Electricity Costs." Journal of Computational and Theoretical Nanoscience 17, no. 7 (July 1, 2020): 3136–40. http://dx.doi.org/10.1166/jctn.2020.9150.

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The continuity of electric power service is a major factor determining electrical customer satisfaction. Research on the implementation of the ATS system between solar cells and grid system as a supplier of electrical power to household electrical loads for continuity and savings in electricity consumption costs aims to design an ATS system for delivering electrical power to the load system that can maintain the continuity of the supply of electricity, reducing costs electricity consumption while reducing dependence on grid electricity supply. The specific target to be achieved in this research is to design an ATS system for the distribution of electric power between grid system and solar power system and find out the cost of savings while maintaining continuity of electricity services, so that electricity consumers can benefit from technical and economic aspects. The method used in this study is an experimental method that is designing an electrical power supply ATS system to get the results of a good design and as planned. The equipment used is solar panels, relays, timers, inverters, household electrical loads, contactors, electrical measuring devices, temperature gauges and light intensity, battery systems and control panels. The results showed that the automatic transfer switch must attention to the design of an accurate and meticulous to avoid damage to the inverter. So that continuity of service of electric power is maintained. Electric power service using a solar cell system with 2 units of 100 Ah batteries and 6 units of 100 Wp solar panels can serve household electrical loads for 1 day of battery charging and discharging, 1 day of battery charging and 1 day of battery discharging with average electric energy generated at 1485 W-hours. Costs can be saved in 1 month if the price of electricity is Rp. 1352/Kwh, is Rp. 20,104.-/month with an investment cost of Rp. 27,956,000.

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Kazymov, Ivan M., Boris S. Kompaneets, and Oleg N. Drobyazko. "Development of a system for control of electric energy parameters in the distribution network." Transportation Systems and Technology 7, no. 2 (July 1, 2021): 106–18. http://dx.doi.org/10.17816/transsyst202172106-118.

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Background: The creation and distribution of technical means and complexes aimed at building effective control systems for electrical networks using information that can be collected by modern metering devices, as well as organizing work in an automated mode, is an urgent task at the present stage of development of the electric power industry in Russia and in the world. Aim: The research presented in this article is aimed at creating an effective system for monitoring the parameters of electrical energy in distribution networks of low and medium voltage levels. Methods: The study was carried out using the theoretical foundations and basic laws of electrical engineering, as well as methods of computer modeling and CAD. Results: A description of the developed system is given, the applicability of its use is graphically shown and substantiated in writing, the possibilities and prospects of application are indicated, and recommendations for practical application are given. Conclusion: The results obtained can be used by power grid companies to analyze the state and efficiency of power grids, and may also be of interest to researchers working on the creation of digital twins of power grids.

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Seitz, Arne, Markus Nickl, Anne Stroh, and Patrick C. Vratny. "Conceptual study of a mechanically integrated parallel hybrid electric turbofan." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 232, no. 14 (July 27, 2018): 2688–712. http://dx.doi.org/10.1177/0954410018790141.

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In the paper, options for mechanically integrated parallel hybrid propulsion are evaluated, and a conceptual sizing and performance study of a mechanically integrated parallel hybrid electric turbofan engine for a short-range aircraft application is presented and discussed. Through a methodical down-selection procedure, a most promising power plant system architectural concept is identified from an initial cloud of concept candidates. The design of the preferred configuration is conceptualized including initial performance analyses, both at the isolated power plant as well as at the integrated aircraft level. Beside the basic power plant definition, the multidisciplinary concept elaboration includes solutions proposed for the electric systems architectural layout, the major electrical components involved as well as important airframe integration aspects. The components of the electrical power management and distribution system are sized, and efficiency and weights are evaluated under special consideration of thermal management requirements. In result, a best and balanced degree of power hybridization is determined for the studied mechanically integrated parallel hybrid power plants taking account of electric system design and weight impacts as well as power plant operational robustness in case of electric system failure. The overall system assessment includes the evaluation of fuel reduction potentials through a parametric aircraft sizing study including the derivation of key technological requirements for onboard electrical energy storage. In the paper, essential design and sizing strategies for mechanically integrated parallel hybrid aero propulsion systems are derived, and a brief characterization of the associated key technological challenges is provided.

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RAJU*, K., P. Mercy hepciba rani, and J. Prashanthi. "Distributed Generation Impact on Distribution System Reliability." International Journal of Engineering and Advanced Technology 10, no. 3 (February 28, 2021): 193–200. http://dx.doi.org/10.35940/ijeat.c2274.0210321.

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Reliability is the most important factor of distribution system and this system should be operated economically with low customer loads interruption. This is because that the distribution system gives supply to customers from transmission system. There are some power quality issues due to the failures of components in distribution system. Researchers are going on to assess the reliability of the power system. In the power system, reliability evaluation is an important aspect in complete electric distribution system planning and operation. Due to the extreme scale of problem, it is not possible to conduct reliability on complete power system, it is performed independently. Hence, In this paper, the reliability of distribution system is evaluated by using an analytical method is described and is applied to the IEEE RBTS BUS-6. Development of reliability model of distribution system using Electrical Transient Analyzer Program (ETAP) software is developed. And the Distributed Generation is introduced for the improvement of reliability. Reliability indices are such as System Average Interruption Frequency Indices (SAIFI), System Average Interruption Duration Indices (SAIDI), Customer Average Interruption Frequency Indices (CAIFI), Customer Average Interruption Duration Indices (CAIDI), Energy Not Supplied (ENS), Average Service Availability Indices (ASAI), etc. The performance of reliability of the system is shown by these indices

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Aliffianto, Lutfir Rahman, Hadi Suyono, and Harry Soekotjo Dachlan. "Coordination of Charging Plug-in Electric Vehicles (PEV) in Electric Distribution Networks to Minimize Power Losses and Voltage Deviations." International Journal of Computer Appplications Technology and Research 10, no. 7 (July 2021): 186–91. http://dx.doi.org/10.7753/ijcatr1007.1002.

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Plug-in Electric Vehicle (PEV) is a vehicle with a drive in the form of an electric motor and gets its energy source from a rechargeable battery. PEV (grid-to-vehicle, or G2V) charging activity can pose a risk to the distribution system when PEV is injected into the system. Charging PEV in the distribution system will cause the demand for electrical power to increase. Without a proper and optimal charging coordination system for the many PEVs that exist in the distribution network system, the following technical problems will arise in the network such as: occurrence of unusual and unwanted peak loads in power consumption, voltage sag, transformers or conductors overload, as well as the occurrence of high power system losses in the distribution system. This study discusses the optimization of PEV charging coordination scheduling in a distribution system by considering power losses and voltage deviations. To optimize the coordination of PEV charging, this study used a metaheuristic method called the Binary Particle Swarm Optimization (BPSO) which was then compared with the Binary Gray Wolves Optimization (BGWO) method. This scheme is simulated on the 20kV Pujon Feeder distribution system in Malang, Indonesia. The initial simulation results, at the time when the most loads were presented, showed 80 percent of PEV penetration, increase in power losses of 54.51 percent and voltage deviation of 9.82 percent. By using the BPSO method, the results showed power loss increase of 27.2 percent and voltage deviation of 7.75 percent. Meanwhile, by using the BGWO method the increase in power losses was 31.09 percent and the voltage deviation was 7.98 percent.

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Takigasaki, Hikaru, and Tsuneyo Sano. "Algorithm for Revising Overlap in Mapping System for the Electric Power Distribution System." IEEJ Transactions on Electronics, Information and Systems 125, no. 8 (2005): 1327–39. http://dx.doi.org/10.1541/ieejeiss.125.1327.

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Menchafou, Youssef, Mustapha Zahri, Mohamed Habibi, and Hassane El Markhi. "Optimal load distribution estimation for fault location in electric power distribution systems." Archives of Electrical Engineering 66, no. 1 (March 1, 2017): 77–87. http://dx.doi.org/10.1515/aee-2017-0006.

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Abstract Accurate fault location in an electric power distribution system (EPDS) is important in maintaining system reliability. Diverse methods have been proposed in the past. These methods whither require measurements at each load point or use single-step loads compensation, which is hardly available in practical uses. In this paper, a simple technique to bypass the load problems is proposed. The method requires calculating an optimal load distribution using the total load seen from the substation (The rated power of distribution transformers) and the network topology. The optimal load distribution is used as a fictive distribution to replace the real unknown one in fault location (FL) algorithms. The effectiveness of the proposed technique is demonstrated using a mathematical formulation first, and next, by several simulations with a classic iterative fault location algorithm. The test results are obtained from the numerical simulation using the data of a distribution line recognized in the literature.

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Kasturi, Kumari, Chinmay Kumar Nayak, and Ranjan Nayak. "Analysis of Photovoltaic & Battery Energy Storage System Impacts on Electric Distribution System Efficacy." International Journal on Electrical Engineering and Informatics 12, no. 4 (December 31, 2020): 1001–15. http://dx.doi.org/10.15676/ijeei.2020.12.4.18.

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Uncertain nature of renewable energy sources like solar irradiation poses a serious concern of loss of power supply reliability. Battery energy storage (BES) system helps in improving system reliability by storing surplus energy generated and supplying the load in case of energy deficit. Thus BES allows improvement of microgrid performance and reduces operational cost by increasing the utilization of renewable energy sources. This paper presents an energy management strategy (EMS) to dictate the power flow among photovoltaic (PV) panels, BES and the load considering a proposed time-of-use (TOU) pricing as the control factor. Its efficacy in improving power supply reliability as well as power quality issues of a 69-bus radial distribution system (RDS) is evaluated from technical performance indices like power loss, voltage deviation index and security margin and economic performance considering costs of power import from the grid and active power loss and financial benefit from battery discharge. Grasshopper Optimization Algorithm (GOA), is used to optimize the sizes and placements of three PV-BES units to minimize an objective function aptly formulated combining the technical performance indices using weighted sum method. The results are contrasted against another two cases of with only PV and without PV and BES integration. Finally, the proposed system is analysed from economic perspective and the benefits obtained are compared. The results are evident of both technical and economic advantages of integrating both PV and BES units at optimal locations (load bus). The optimization results obtained from GOA have been compared with that from Genetic Algorithm (GA). GOA proves to be fast, effective and reliable in resolving power flow optimization problem.

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Ponnam, V. K. B., and K. Swarnasri. "Multi-Objective Optimal Allocation of Electric Vehicle Charging Stations and Distributed Generators in Radial Distribution Systems using Metaheuristic Optimization Algorithms." Engineering, Technology & Applied Science Research 10, no. 3 (June 7, 2020): 5837–44. http://dx.doi.org/10.48084/etasr.3517.

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The acceptance rate of Electric Vehicles (EVs) in the transport industry has increased substantially due to the augmented interest towards sustainable transportation initiatives. However, their impact in terms of increased power demand on the electric power market can increase real power losses, decrease voltage profile, and consequently decrease voltage stability margins. It is necessary to install Electric Vehicle Charging Stations (EVCSs) and Distributed Generators (DGs) at optimal locations to decrease the EV load effect in the Radial Distribution System (RDS). This paper addresses a multi-objective optimization technique to obtain simultaneous EVCS & DG placement and sizing. The problem is formulated to optimize real power losses, Average Voltage Deviation Index (AVDI), and Voltage Stability Index (VSI) of the electrical distribution system. Simulation studies were performed on the standard IEEE 33-bus and 69-bus test systems. Harries Hawk Optimization (HHO) and Teaching-Learning Based Optimization (TLBO) algorithms were selected to minimize the system objectives. The simulation outcomes reveal that the proposed approach improved system performance in all aspects. Among HHO and TLBO, HHO is reasonably successful in accomplishing the desired goals.

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Ajiatmo, Dwi, Imam Robandi, Machrus Ali, and Betta Aidya Suroya. "Analisis Gangguan Pada Sistem Tenaga Listrik Jawa Bali 500 kV Menggunakan Power World Simulator." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 10, no. 1 (April 22, 2019): 35–41. http://dx.doi.org/10.32492/jintake.v10i1.793.

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Short circuit is one type of interference that often occurs in electric power systems. The interference if it lasts a long time will affect the quality and continity of electrical power distribution as well as the reliability and safety of the equipment on the system. To minimize the possibility of interference and to minimize the consequences caused by interference, an analysis of disturbances in the electric power system is needed. This study discusses the classification and analysis of disturbances in the electric power system. The type of interference in the electric power system is classified into two, namely symmetry and non-symmetrical interference. Symmetry disturbances are three phase disturbances which are described by the equation of the sequence of the symmetry component system. Sequence equations from the symmetry component system are positive sequence equations, negative sequence equations, and zero sequence equations. Non-symmetrical interference is a disorder that often occurs in electric power systems, namely the interference of one network to the ground, network interference to the network and interference of two networks to the ground. This research is to classify and to analyze the types of disturbances in the Java-Bali electric power system 500 kV 20 buses in the form of a single line diagram, using Power World Simulator and ETAP Software applications. The simulation results are calculated and display the simulation design of the power system with the tools contained in the program.

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Dwi Ajiatmo, Imam Robandi, and Machrus Ali. "Analisis Gangguan Pada Sistem Tenaga Listrik Jawa Bali 500 kV Menggunakan Power World Simulator." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 10, no. 1 (April 22, 2019): 35–41. http://dx.doi.org/10.48056/jintake.v10i1.50.

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Short circuit is one type of interference that often occurs in electric power systems. The interference if it lasts a long time will affect the quality and continity of electrical power distribution as well as the reliability and safety of the equipment on the system. To minimize the possibility of interference and to minimize the consequences caused by interference, an analysis of disturbances in the electric power system is needed. This study discusses the classification and analysis of disturbances in the electric power system. The type of interference in the electric power system is classified into two, namely symmetry and non-symmetrical interference. Symmetry disturbances are three phase disturbances which are described by the equation of the sequence of the symmetry component system. Sequence equations from the symmetry component system are positive sequence equations, negative sequence equations, and zero sequence equations. Non-symmetrical interference is a disorder that often occurs in electric power systems, namely the interference of one network to the ground, network interference to the network and interference of two networks to the ground. This research is to classify and to analyze the types of disturbances in the Java-Bali electric power system 500 kV 20 buses in the form of a single line diagram, using Power World Simulator and ETAP Software applications. The simulation results are calculated and display the simulation design of the power system with the tools contained in the program.

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Journal articles on the topic 'Electric power distribution system'

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