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Статті в журналах з теми "Distributed generation sources"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Chechushkov, Dmitrii. "System Transient Stability with Distributed Generation." Advanced Materials Research 1070-1072 (December 2014): 983–86. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.983.

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Анотація:

The paper represents a research of transient stability accessing of power system and distributed generation sources. The methodology of modeling is presented. The analysis of transient stability of DG sources is presented and shows the impact of DG on transient system stability.

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2

Shetty, Nayana. "STORAGE SCHEDULING SCHEME FOR DISTRIBUTED ENERGY GENERATION SOURCES." Journal of Electrical Engineering and Automation 1, no. 02 (December 16, 2019): 93–102. http://dx.doi.org/10.36548/jeea.2019.2.004.

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Анотація:

Innumerable methods of generating, delivering and consuming electricity has become very prominent in the recent days due to the emergence of the distributed energy resources that are comprised of renewable energy sources and the energy storage systems. The prevailing energy storage systems for the distributed energy resources has its own challenges that are related to the methods of storage, the cost of the storage and their functioning. So the paper puts forward a novel energy accumulator that is supported by a rotating magnetic core as storage for the distributed energy resources. The proposed method brings down the operational, technical and financial complexities in storage of the distributed energy resources.

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3

Kol’nichegko, Georgij I., Yakov V. Tarlakov, and Alexander V. Sirotov. "Renewable sources of energy in distributed power generation." IOP Conference Series: Earth and Environmental Science 548 (September 2, 2020): 052008. http://dx.doi.org/10.1088/1755-1315/548/5/052008.

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4

Ramos, C., A. Martins, and A. Cavalho. "Synchronizing Renewable Energy Sources in Distributed Generation Systems." Renewable Energy and Power Quality Journal 1, no. 03 (March 2005): 477–81. http://dx.doi.org/10.24084/repqj03.334.

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5

Moreno Martínez, Rodolfo, José Antenor Pomilio, Luiz Carlos Pereira da Silva, and Sérgio Pires Pimentel. "Mitigation Of Harmonic Distortion By Power Electronic Interface Connecting Distributed Generation Sources To A Weak Grid." Eletrônica de Potência 14, no. 4 (November 1, 2009): 269–76. http://dx.doi.org/10.18618/rep.2009.4.269276.

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6

Khattab, H. A., M. F. Awad-alla, S. M. Allam, and S. M. farrag. "FUEL CELLS VS. RENEWABLE ENERGY SOURCES AS DISTRIBUTED GENERATION." ERJ. Engineering Research Journal 38, no. 1 (January 1, 2015): 9–13. http://dx.doi.org/10.21608/erjm.2015.66769.

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7

Roshchin, Oleg A. "The Prospect of Using Renewable Energy in Russia." Elektrotekhnologii i elektrooborudovanie v APK 2, no. 43 (2021): 41–47. http://dx.doi.org/10.22314/2658-4859-2021-68-2-41-47.

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Анотація:

The features of Russia is the low population density on huge, poorly developed lands in terms of production. About 20 million people live in the territory where there is no centralized power supply, power supply is organized on generating systems running on imported fuel. (Research purpose) The research purpose is in studying the prospects for the development of microgrids based on the use of alternative energy generating systems of renewable energy sources using a micro-gas turbine plant as the base generator, which is the source of the reference voltage of microgrid based on single-wire resonant distribution networks of a new generation in Russia. (Materials and methods) The article presents the prospects for the development of microgrids based on material taken from open sources. Authors applied the methods of scientific analysis of events, facts, materials, and conclusions. (Results and discussions) The article shows that the world energy system evolutionarily enters a new fourth stage of fundamental transformation, called the "Energy Transition". The creation of microgrids based on renewable energy sources with a basic micro-gas turbine unit and single-wire resonant distribution networks of a new generation is an indisputable proof of this energy transition. (Conclusions) In many countries of the world, there is an increase in the share of distributed generation based on renewable energy sources, the introduction of new centralized generation capacities is reduced, investments in the construction of large power plants and new high-voltage transmission lines are reduced due to the development of distributed generation. Distributed generation contributes to the rapid expansion of electricity production without the need for additional development of the power grid infrastructure.

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8

Timofeev, E., and A. Erk. "Forecasting the impact on the environment of generating sources in agricultural production." E3S Web of Conferences 262 (2021): 01036. http://dx.doi.org/10.1051/e3sconf/202126201036.

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Анотація:

The development of rural electrification is aimed at distributed energy, i.e. availability of autonomous sources of electricity and heat generation. Generation sources can use coal, fuel oil, gas, local and alternative energy sources as fuel and energy resources. This causes additional emissions of pollutants. Prediction of negative impact on the environment depends on the quantity and quality of emissions during the operation of various types of installations that generate electric and thermal energy. The purpose of the study is to select and substantiate the most attractive method for predicting the impact on the environment of generating sources in agricultural production. The widespread introduction of distributed energy using local and renewable energy sources will significantly reduce emissions of pollutants due to a decrease in energy intensity, matching the required load with the capacity of generation sources, using the most energy efficient sources, and widespread introduction of renewable energy sources. In this regard, it is advisable to forecast the impacts by the scenario method considering the implementation of the proposed distributed power supply system. The implementation of measures developed considering the analysis of the forecast of the negative impact on the environment of generating plants in agricultural enterprises will reduce the negative impact on the environment by introducing energy-efficient technologies into the energy balance of the enterprise, as well as increase production by up to 20% and increase sustainability. rural areas.

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9

Azbe, V., and R. Mihalic. "Distributed generation from renewable sources in an isolated DC network." Renewable Energy 31, no. 14 (November 2006): 2370–84. http://dx.doi.org/10.1016/j.renene.2006.01.001.

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10

Li, Li Sheng, Shi Dong Zhang, He Jin Liu, Xing Quan Ji, Gui Bin Liu, and Ke Jun Li. "Voltage Imbalance Simulation for Distributed Network with Single-Phase PV Connected." Applied Mechanics and Materials 687-691 (November 2014): 3166–70. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.3166.

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There exist many single-phase photovoltaic generations in modern power distribution network, and these distributed sources may be in a certain extent affect the symmetry of voltage. To investigate the impact of photovoltaic generation on quality problem of distribution network, mathematical and digital model of photovoltaic power generation are built in this paper, and the maximum power point tracking control is simulated based on incremental conductance method.

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11

Chen, Ming Jun, Chen Zhu Xuan, and Xin Kai Lian. "Fault Analysis of Distribution Network which Contains Distributed Generation." Applied Mechanics and Materials 325-326 (June 2013): 624–27. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.624.

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Анотація:

when the photovoltaic power generation and thermoelectric power factory connect into the distribution network , the system change from one source to several sources. it will change the construction of the system and the system power flow ,and also the size and direction of short-circuit current. It is harder to prepare the grid protection devices and set value for the protection. This paper studied the complex electronic systems which contains wind farms and thermoelectric power factory, analysis the change of voltage and current of each bus when the fault happen after the photovoltaic power generation connected into the system, and also talk about how the fault location affect the system fault component .Then conduct the expression of the fault current of each line to provide the basis for the study of multiterminal supply network protection strategy.

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12

Liu, Cheng, and Jian Qin. "The V2G Technique and its Application in Distributed Generation." Advanced Materials Research 608-609 (December 2012): 1665–70. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1665.

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Traditional distributed power sources are usually natural energy sources, their output power is not stable and difficult to join up to the grid. Battery electric vehicles(BEV) based on V2G technique is a new kind of Distributed Generation(DG). This paper introduces a V2G technique. A V2G-based BEV could be used to realize load shifting and stabilize the disturbance for DG's joining up with the grid. Many countries started researching V2G technique and in China NARI Group Corporation and Xuji Group Corporation have researched and started manufacturing practical V2G device. This paper also shows the main principle of V2G and its application in China, concludes its advantages and analyzes its development in the future.

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13

Toshkhodzhaeva, Muhayo, Elena Gracheva, Okhunbobo Rahimov, and Shakhboz Dadabaev. "Problems of Electric Power System Management taking into account Sources Distributed Generation." E3S Web of Conferences 220 (2020): 01034. http://dx.doi.org/10.1051/e3sconf/202022001034.

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This article provides a brief overview of the existing problems of managing the electric power system, taking into account the sources of distributed generation. The features of centralized and decentralized power supply systems are considered from the point of view of changing operating conditions, in particular, eliminating the consequences of technological violations. The main goals of the electric power system management have been determined, regardless of the number of sources and the category of consumers in terms of power supply reliability, as well as in emergency and post-emergency modes. The basic principles and sequence of power system management are presented. An algorithm for the efficiency of operation and dispatch control of the power system is considered, methods for ensuring the selective operation of relay protection and automation devices in the presence of several generating capacities are presented. A fragment of an electrical network with four energy sources is shown and the main measures to ensure its normal functioning are proposed.

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14

Krishnamurthy, Manjunatha Sharma, and Panduranga Vittal Koppal. "Performance Enhancement of Electrical Distribution Systems with Multiple Distributed Generation Sources." Cogeneration & Distributed Generation Journal 25, no. 3 (July 2010): 50–62. http://dx.doi.org/10.1080/15453669.2010.10121743.

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15

Ebadi, Mazdak, Mahmood Joorabian, and Javad Shokrollahi Moghani. "Multilevel cascaded transformerless inverter for connecting distributed‐generation sources to network." IET Power Electronics 7, no. 7 (July 2014): 1691–703. http://dx.doi.org/10.1049/iet-pel.2013.0112.

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16

Iwaszkiewicz, Jan, and Jacek Perz. "Multilevel Convertors for Distributed Power Generation Systems with DC Voltage Sources." Renewable Energy and Power Quality Journal 1, no. 03 (March 2005): 328–33. http://dx.doi.org/10.24084/repqj03.292.

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17

Nigim, Khaled A., and Ahmed Faheem Zobaa. "Development and opportunities of distributed generation fuelled by renewable energy sources." International Journal of Global Energy Issues 26, no. 3/4 (2006): 215. http://dx.doi.org/10.1504/ijgei.2006.011257.

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18

Lotter, J. T., R. Naidoo, and R. C. Bansal. "The Effects of Distributed Generation Sources within Commercial Retail Reticulation Networks." Energy Procedia 142 (December 2017): 1765–70. http://dx.doi.org/10.1016/j.egypro.2017.12.561.

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19

Carley, M. J., and P. A. Martin. "Jet noise: sound generation by disc and cylinder sources." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2148 (September 12, 2012): 3947–64. http://dx.doi.org/10.1098/rspa.2012.0362.

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Анотація:

An exact analysis of the field radiated by tonal and random non-axisymmetric sources distributed over a disc or cylinder is presented. The analysis is exact, without recourse to near- or far-field approximations, and leads to a direct relationship between source frequency and the nature of the radiated field. The implications of the analysis for a number of applications are discussed, finding in particular that source identification is inherently ill-conditioned as a result of a ‘filtering’ effect that removes information from the radiation field; low-frequency sources generate fields that are indistinguishable from each other; jet noise fields are inherently simpler than the flow that gives rise to them, a finding that has previously been noted for experimental data.

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20

Nguen, Van, and Zyuy Chan. "USE OF PROGNOSTIC ALGORITHMS AND FUZZY CONTROL SYSTEMS FOR INSTALLATION OF DISTRIBUTED GENERATION." Modern Technologies and Scientific and Technological Progress 2020, no. 1 (June 16, 2020): 217–18. http://dx.doi.org/10.36629/2686-9896-2020-1-217-218.

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The concept of intelligent electric networks provides for the widespread use of distributed generation plants with renewable sources, in particular, implemented on the basis of windgenerating plants. The report addresses the issues of sharing prognostic algorithms and fuzzy regulators for controlling wind-generating installations

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21

Gossan, Sarah E., Evan D. Hall, and Samaya M. Nissanke. "Optimizing the Third Generation of Gravitational-wave Observatories for Galactic Astrophysics." Astrophysical Journal 926, no. 2 (February 1, 2022): 231. http://dx.doi.org/10.3847/1538-4357/ac4164.

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Abstract Gravitational-wave (GW) astrophysics is a rapidly expanding field, with plans to enhance the global ground-based observatory network through the addition of larger, more sensitive observatories: the Einstein Telescope and Cosmic Explorer. These observatories will allow us to peer deeper into the sky, collecting GW events from farther away and earlier in the universe. Within our own Galaxy, there is a plethora of interesting GW sources, including core-collapse supernovae, phenomena in isolated neutron stars and pulsars, and potentially novel sources. As GW observatories are directionally sensitive, their placement on the globe will affect the observation of Galactic sources. We analyze the performance of one-, two-, and three-observatory networks, both for sources at the Galactic center, as well as for a source population distributed over the Galactic disk. We find that, for a single Cosmic Explorer or Einstein Telescope observatory, placement at near-equatorial latitudes provides the most reliable observation of the Galactic center. When a source population distributed over the Galactic disk is considered, the observatory location is less impactful, although equatorial observatories still confer an advantage over observatories at more extreme latitudes. For two- and three-node networks, the longitudes of the observatories additionally become important for consistent observation of the Galaxy.

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22

Zhao, Jia Xing, and Ming Xia Shangguan. "Study on the Control of Distributed Generation System." Advanced Materials Research 1070-1072 (December 2014): 888–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.888.

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Distributed generation system (DGs) is considered to be an advanced configuration of distributed generation through the effective organization of renewable energy power sources, loads and energy storage devices, which can operate either isolation or connected with grid. This paper studied the control of DGs which is constructed with DFIG (Double Fed Induction Generator) based Wind Farm, PV (Photovoltaic) generation farm and Storage Batteries. The paper studied the simulation model of the DGs and the control strategy.

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23

Paskar, Ivan, Fedor Nepsha, and Gennadij Lebedev. "Technocenological approach to development of power generation of industrial regions." E3S Web of Conferences 315 (2021): 03007. http://dx.doi.org/10.1051/e3sconf/202131503007.

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Анотація:

The prerequisites for the implementation of distributed generation facilities in the power grid complex of the region are highlighted. A technocenological approach has been chosen for the economically and technically sound implementation of power sources. The procedures for the verification and visualization of the technocenosis were carried out, and the stability of the existing generation system was determined. The analysis of the generating complex with the power units expected to be commissioned has been carried out. It is concluded that it is necessary to install a distributed generation facility of low power to improve energy security.

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24

Uddin, Wasique, Dr Ashok Kumar Jhala, and Pramod Kumar Rathore. "Distributed Generation of Power Using Simulation Technique." SMART MOVES JOURNAL IJOSCIENCE 6, no. 2 (February 10, 2020): 43–50. http://dx.doi.org/10.24113/ijoscience.v6i2.273.

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Анотація:

Distributed generation is attracting much mindfulness as a viable option to giant centralized generation plants, driven by the fast evolving liberalization and deregulation environments. This interest is also motivated by the need for eliminating the needless transmission and distribution costs, drooping the greenhouse gas emissions, deferring capital costs and improving the availability and consistency of electrical network Therefore, disseminated generation is expected to play an escalating vital role in meeting future power generation supplies and to provide consumers with elastic and cost resistive solutions for many of their energy needs. However, the integration of these sources into the electrical network can cause some challenges regarding their expected impact on the safety and the active behavior of the full network. It is vital to study these issue and to analyze the permakeedance of the expected future systems to guarantee satisfactory operation and to maximize the benefits of utilizing the dis- tribute resources.

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25

Ahmed, Si Zegnoun, Mohammed Nasser Tandjaoui, Mokhtar Djebbar, Chellali Benachaiba, and B. Mazari. "Power quality enhancement by using D-FACTS systems applied to distributed generation." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 1 (March 1, 2019): 330. http://dx.doi.org/10.11591/ijpeds.v10.i1.pp330-341.

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<p>In the majority of the isolated areas, the diesel generator is the principal source of electric power. For these areas, the price of extension of the electrical supply network is prohibitory and the price of fuel increases radically with insulation. The continuous fall in the prices of the generators based on renewable energy and the increasing reliability of these systems led to a greater use of the sources of renewable energy for the generation of electric power in the isolated areas. The diesel generators can incorporate in a network with other sources in base of renewable energies in order to create a new network known as distributed network. More recently intermittent renewable resources such as the wind power were considered as a distributed generation which is seen as being deployed to reduce the total emissions. The distributed generation equipment sets causing electric disturbances result in destabilizing the global network as well as pollutant, for these reason, system D-FACTS comes to answer all the concern of the customers, manufacturers, suppliers and the managers of the distributed network<em>.</em></p>

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26

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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Анотація:

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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27

Tribunskaia, Anastasiia. "Requirements for distributed generation from the electricity system flexibility point of view." E3S Web of Conferences 209 (2020): 02030. http://dx.doi.org/10.1051/e3sconf/202020902030.

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Nowadays distributed generation is developing perspective technology that influences among others on electricity system flexibility. This paper represents analysis of foreign and Russian works and describes main flexibility sources, distributed energy role in providing flexibility, advantages and disadvantages of distributed energy appliance. Electricity flexibility is discussed from distributed generation point of view. Also requirements for distributed energy are defined providing maximum efficiency of distributed energy included in electricity system appliance.

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28

Rajasekhar, Mr M. "Design and Monitoring of Solar Power Generation System for Domestic Applications using Matlab/Simulink." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 3733–39. http://dx.doi.org/10.22214/ijraset.2021.35779.

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Анотація:

In recent years, it is getting attention for renewable energy sources such as solar energy, fuel cells, batteries or ultra capacitors for distributed power generation systems.solar energy maintains life on earth and it is an infinite source of clean energy.Solar radiant energy accounts for most of the usable renewable energy on this earth. Photovoltaic (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductor that exhibit the photovoltaic effect. Since last five decades, numerous studies have been performed on different design aspects and performance characteristics of Photovoltaic (PV) cells with a common objective of producing fully integrated PV modules to compete with the traditional energy sources. There is an increasing trend for the use of solar cells in industry and domestic appliances because solar energy is expected to play substantial role in future smart grid as distributed renewable source. The proposed model is based on a behavioral cell model for modeling solar radiance to electricity conversion and an electrical driver interface for implementing electrical characteristic of power limited systems in power simulations.

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29

Lal, Avisekh, Ravitesh Kumar, Utkal Mehta, and Gancho Vachkov. "Fuzzy energy distribution to a variable consumer load." South Pacific Journal of Natural and Applied Sciences 32, no. 2 (2014): 37. http://dx.doi.org/10.1071/sp14006.

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Анотація:

The paper demonstrates the fuzzy logic based smart distributed system to utilize the available energy optimally. We study the power system with two distributed sources of renewable energy like wind and solar together with normal power grid supply. Through the suitable allotter of the generation ratio from power sources, the distribution generation system, combined with battery bank, can provide user with reliable and constant electric power. Therefore a smart energy distributor is useful to supply energy to consumers such that their demand is supplied optimally depending available energy and battery status. In this work, a new distributor system is tested with fuzzy logic theory to satisfy the load demand constantly at the same time to keep the charging state of the battery at a safe level. Simulation results are also presented to illustrate the potential benefits of the smart distributor by maximizing the usage of renewable energy and depending less on the supply grid.

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30

Vlad, Ciprian, Marian Barbu, and Ramon Vilanova. "Intelligent Control of a Distributed Energy Generation System Based on Renewable Sources." Sustainability 8, no. 8 (August 4, 2016): 748. http://dx.doi.org/10.3390/su8080748.

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31

Pagliaro, Mario, and Francesco Meneguzzo. "Distributed Generation from Renewable Energy Sources: Ending Energy Poverty across the World." Energy Technology 8, no. 7 (May 10, 2020): 2000126. http://dx.doi.org/10.1002/ente.202000126.

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32

Wang, C., and M. H. Nehrir. "Analytical Approaches for Optimal Placement of Distributed Generation Sources in Power Systems." IEEE Transactions on Power Systems 19, no. 4 (November 2004): 2068–76. http://dx.doi.org/10.1109/tpwrs.2004.836189.

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33

Savic, Nemanja, Vladimir Katic, Boris Dumnic, Dragan Milicevic, Zoltan Corba, and Nenad Katic. "The Investment Justification Estimate and Techno-economic and Ecological Aspects Analysis of the University Campus Microgrid." Electronics ETF 23, no. 1 (September 20, 2019): 26. http://dx.doi.org/10.7251/els1923026s.

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Анотація:

The paper presents the plan and design of the idea of the microgrid at the Faculty of Technical Sciences in Novi Sad (FTN NS) in the university campus, which is based on the application of several different distributed energy sources. The main distributed energy sources used and planned for the distributed electricity generation in the microgrid “FTN NS” are the photovoltaic power plant with a nominal output of 9.6 kW, a photovoltaic power plant with a nominal output power of 16.3 kW, a wind power plant with a nominal output power of 2 kW, a cogeneration plant for combined heat and power production of the nominal output power of 10 kWe + 17.5 kWt, two electric vehicles of 4 kW and 2.5 kW power, and battery energy storage system with a total capacity of 36 kWh. The paper describes the main technical characteristics, the estimation of electricity generation and the estimation of the amount of non-polluted gaseous greenhouse effect for each distributed source of energy. In order to verify the justification of the application of the proposed microgrid concept, a detailed techno-economic and ecological analysis of the aspects of the application of distributed energy sources in the microgrid “FTN NS” was carried out in the paper.

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34

Udalov, Sergey, Andrey Achitaev, and Michael Yumanov. "Increase Adjustment Capacity Generators for Power Supply Systems with Distributed Generation." Applied Mechanics and Materials 792 (September 2015): 62–66. http://dx.doi.org/10.4028/www.scientific.net/amm.792.62.

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Modern development of distributed sources of electricity in Russia is impossible without the development of means to improve its dynamic stability during sudden changes of regime. In this paper a solution of using a pseudo-direct drive is proposed. The relevance of the study is related to the fact that Russia distributed energy sources in isolated power systems have little power. Unfortunately, there are some drawbacks of such power systems in terms of electricity problems associated with the loss of dynamic stability during short circuits.

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35

Chen, Xiaodao, and Shiyan Hu. "Distributed Generation Placement for Power Distribution Networks." Journal of Circuits, Systems and Computers 24, no. 01 (November 10, 2014): 1550009. http://dx.doi.org/10.1142/s0218126615500097.

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Анотація:

Growing concerns on the energy crisis impose great challenges in development and deployment of the smart grid technologies into the existing electrical power system. A key enabling technology in smart grid is distributed generation, which refers to the technology that power generating sources are located in a highly distributed fashion and each customer is both a consumer and a producer for energy. An important optimization problem in distributed generation design is the insertion of distributed generators (DGs), which are often renewable resources exploiting e.g., photovoltaic, hydro, wind, ocean energy. In this paper, a new power loss filtering based sensitivity guided cross entropy (CE) algorithm is proposed for the distributed generator insertion problem. This algorithm is based on the advanced CE optimization technique which exploits the idea of importance sampling in performing optimization. Our experimental results demonstrate that on large distribution networks, our algorithm can largely reduce (up to 179.3%) power loss comparing to a state-of-the-art sensitivity guided greedy algorithm with small runtime overhead. In addition, our algorithm runs about 5× faster than the classical CE algorithm due to the integration of power loss filtering and sensitivity optimization. Moreover, all existing techniques only test on very small distribution systems (usually with < 50 nodes) while our experiments are performed on the distribution networks with up to 5000 nodes, which matches the realistic setup. These demonstrate the practicality of the proposed algorithm.

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36

Barukčić, Marinko, Toni Varga, Vedrana Jerković Štil, and Tin Benšić. "Co-Simulation Framework for Optimal Allocation and Power Management of DGs in Power Distribution Networks Based on Computational Intelligence Techniques." Electronics 10, no. 14 (July 10, 2021): 1648. http://dx.doi.org/10.3390/electronics10141648.

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The paper researches the impact of the input data resolution on the solution of optimal allocation and power management of controllable and non-controllable renewable energy sources distributed generation in the distribution power system. Computational intelligence techniques and co-simulation approach are used, aiming at more realistic system modeling and solving the complex optimization problem. The optimization problem considers the optimal allocation of all distributed generations and the optimal power control of controllable distributed generations. The co-simulation setup employs a tool for power system analysis and a metaheuristic optimizer to solve the optimization problem. Three different resolutions of input data (generation and load profiles) are used: hourly, daily, and monthly averages over one year. An artificial neural network is used to estimate the optimal output of controllable distributed generations and thus significantly decrease the dimensionality of the optimization problem. The proposed procedure is applied on a 13 node test feeder proposed by the Institute of Electrical and Electronics Engineers. The obtained results show a huge impact of the input data resolution on the optimal allocation of distributed generations. Applying the proposed approach, the energy losses are decreased by over 50–70% by the optimal allocation and control of distributed generations depending on the tested network.

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37

Omelchuk, A., S. Voloshchyn, L. Martyniuk, and Yu Kaidenko. "Improvement of protection of distribution of sectioned lines with distributed generation sources (DGS)." Energy and Automation, no. 4 (September 23, 2020): 67–77. http://dx.doi.org/10.31548/energiya2020.04.067.

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When powered from a backup source, the short-circuit currents in the protected area are much lower than the current cutoff insert installed at the sectioning point, therefore, in this case, the current cutoff is ineffective. In cases where the maximum current directional protection (MCDP) does not provide the required sensitivity, it is advisable to use distance protection with dependent exposure on sectioned lines and lines from distributed generation sources (DGS) in a significant decrease in voltage on the DGS buses during external short circuits through a relatively large reactance of small and medium power. Different modes of operation of sectioned lines from DGS are characterized by a change in the direction of flow of the load current and short-circuit current. Therefore, on such lines, maximum current directional protections can be applied, which provide selective action of adjacent sets of line protection in different modes of their operation. The use of definite time protection leads to the accumulation of a long time delay for the protection installed on the main switch (especially when several sectioning switches are installed on the line), which complicates the coordination of the protection of the main sections of the lines from the protection of the supply substations. The article deals with the problems of improving relay protection for distribution networks with distributed generation sources (DGS). Paying attention to the peculiarities of protection operation under different operating modes of such networks, namely: normal and post-emergency. The protection of lines from DGS must meet the general requirements for ensuring the necessary sensitivity, selectivity of action for different types of damage. Difficulties in ensuring the required sensitivity when using overcurrent protection and current cutoff in such networks are caused by the low level of short-circuit currents from backup sources. The features of the implementation of relay protection in sectioned networks when they are powered from the DGS are given. The expediency of using remote triggering devices for distance protection to increase the sensitivity of protection of sectioned lines from DGS has been substantiated.

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38

Sivakumar, P., and Arumugam Rajapandiyan. "Enhanced OPF for DG Penetrated Power System Network under Variable Load Conditions." Advanced Materials Research 984-985 (July 2014): 1301–5. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.1301.

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In modern power systems, distributed generation turns out to be progressively significant. Conversely, the growing utilize of distributed generators origins the concerns on the growing system hazard owing to their probable breakdown or unruly power productivity based on such renewable energy sources as wind and the sun. Power contribution at the required proportion by the grids is the chief performance consideration which depends upon the penetration of distributed generation and the accessibility of conventional sources during the load transform. In this paper, the projected approach is that the essential load power is divided evenly between the grids composed of Distributed Generation (DG) units and the utility based on the PSO algorithm during the load transform. A case study is carried out based on the New England test system (10-Generator-39-Bus) as a standard by using Particle swarm optimization (PSO) algorithm.

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39

Abbas, Ahmed S., Ragab A. El-Sehiemy, Adel Abou El-Ela, Eman Salah Ali, Karar Mahmoud, Matti Lehtonen, and Mohamed M. F. Darwish. "Optimal Harmonic Mitigation in Distribution Systems with Inverter Based Distributed Generation." Applied Sciences 11, no. 2 (January 15, 2021): 774. http://dx.doi.org/10.3390/app11020774.

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In recent years, with the widespread use of non-linear loads power electronic devices associated with the penetration of various renewable energy sources, the distribution system is highly affected by harmonic distortion caused by these sources. Moreover, the inverter-based distributed generation units (DGs) (e.g., photovoltaic (PV) and wind turbine) that are integrated into the distribution systems, are considered as significant harmonic sources of severe harmful effects on the system power quality. To solve these issues, this paper proposes a harmonic mitigation method for improving the power quality problems in distribution systems. Specifically, the proposed optimal planning of the single tuned harmonic filters (STFs) in the presence of inverter-based DGs is developed by the recent Water Cycle Algorithm (WCA). The objectives of this planning problem aim to minimize the total harmonic distortion (THD), power loss, filter investment cost, and improvement of voltage profile considering different constraints to meet the IEEE 519 standard. Further, the impact of the inverter-based DGs on the system harmonics is studied. Two cases are considered to find the effect of the DGs harmonic spectrum on the system distortion and filter planning. The proposed method is tested on the IEEE 69-bus distribution system. The effectiveness of the proposed planning model is demonstrated where significant reductions in the harmonic distortion are accomplished.

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40

Sharma, Praval, and Dr Imran. "Integration of Distributed Generating Systems for Non-Linear Loads." Journal of University of Shanghai for Science and Technology 23, no. 06 (June 23, 2021): 1525–45. http://dx.doi.org/10.51201/jusst/21/06459.

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The independent small-scale networks including sustainable power sources have been used in remote regions around the globe. Nonetheless, the irregularity of vitality sources may cause an enormous variance of the miniaturized scale framework recurrence. Because of consistently expanding vitality utilization, rising open familiarity with ecological assurance, and relentless advancement in power deregulation, distributed generation (DG) frameworks have pulled in expanded intrigue. Wind and photovoltaic (PV) power age are two of the most encouraging sustainable power source advancements. Fuel cell (FC) frameworks likewise show incredible potential in DG utilizations of things to come because of their quick innovation improvement and numerous benefits they have, for example, high effectiveness, zero or low outflow (of contamination gases), and adaptable measured structure. In proposition investigated work Integration of Distributed Generating Systems for Non-straight Loads will be proposed. A run-of-the-mill wind-PV-diesel reconciliation which comprises of diesel generator, PV framework, wind turbine generator (WTG), BESS, and burden, is utilized for the proposed models and controllers. We reenact and Integration Distributed Generating Systems for Non-straight Loads on the MATLAB/SIMULINK and portions of coordinated vitality frameworks are analyzed. The coordinated PV framework is normally controlled to work in the maximum power point tracking (MPPT) mode. The battery vitality stockpiling framework is worked inconsistent force charging or releasing mode. So as to give an incorporated vitality framework associated with lattice relying upon singular vitality necessities, the Integrated Energy Systems can be extra to a current vitality source to lessen petroleum product utilization or an independent for complete non-renewable energy source uprooting Through the broad joining of vitality foundations it is conceivable to upgrade the supportability, adaptability, steadiness, and productivity of the general vitality framework. The reproduction of incorporated vitality frameworks is done in MATLAB/SIMULINK. And all framework results will be done by Matlab reproduction is proposed for disconnected smaller scale matrices with sustainable sources. In the exhibited method, the pitch point controller is intended for wind turbine generator (WTG) framework to smooth breeze power yield. The proposed procedure is tried in a regular secluded incorporated small-scale network with both PV and wind turbine generators.

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41

Ko, Rakkyung, and Sung-Kwan Joo. "Stochastic Mixed-Integer Programming (SMIP)-Based Distributed Energy Resource Allocation Method for Virtual Power Plants." Energies 13, no. 1 (December 21, 2019): 67. http://dx.doi.org/10.3390/en13010067.

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Virtual power plants (VPPs) have been widely researched to handle the unpredictability and variable nature of renewable energy sources. The distributed energy resources are aggregated to form into a virtual power plant and operate as a single generator from the perspective of a system operator. Power system operators often utilize the incentives to operate virtual power plants in desired ways. To maximize the revenue of virtual power plant operators, including its incentives, an optimal portfolio needs to be identified, because each renewable energy source has a different generation pattern. This study proposes a stochastic mixed-integer programming based distributed energy resource allocation method. The proposed method attempts to maximize the revenue of VPP operators considering market incentives. Furthermore, the uncertainty in the generation pattern of renewable energy sources is considered by the stochastic approach. Numerical results show the effectiveness of the proposed method.

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42

Rehman, Abdul, Rasim Ozcan, Waqar Badshah, Magdalena Radulescu, and Ilhan Ozturk. "Symmetric and Asymmetric Impacts of Commercial Energy Distribution from Key Sources on Economic Progress in Pakistan." Sustainability 13, no. 22 (November 16, 2021): 12670. http://dx.doi.org/10.3390/su132212670.

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This paper aims to determine the interaction of commercial energy distribution, including the installed capacity of hydroelectric energy, hydroelectric energy generation, the installed capacity of thermal energy, thermal energy generation, the installed capacity of nuclear energy, and nuclear energy generation, with economic progress in Pakistan over the 1970–2019 period. Both linear and non-linear autoregressive distributed lag models were used to ascertain the symmetric and asymmetric short- and long-run effects. The findings from the linear autoregressive distributed lag model analysis revealed evidence that increases in the installed capacity of nuclear energy, alongside higher levels of hydroelectric energy generation and thermal energy generation, have positively affected economic growth in the short run, while a greater installed capacity of nuclear energy has positively affected economic growth in the long run. The findings from the non-linear autoregressive distributed lag model analysis showed that negative shocks to installed capacities related to hydroelectric, thermal, and nuclear energy reduced economic growth, while positive shocks to hydroelectric energy generation and the installed capacity of nuclear energy boosted economic growth in the short run. Furthermore, in the long run, negative shocks to the installed capacities of hydroelectric and thermal energy reduced economic growth, negative shocks to the installed capacity of nuclear energy enhanced economic growth, and positive shocks to hydroelectric energy generation and the installed capacity of nuclear energy have stimulated economic growth in Pakistan.

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43

Venkatesh, S. "Design and Implementation of Grid Connected Solar Inverter using Adaptive Harmonic Elimination Technique." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 5123–29. http://dx.doi.org/10.22214/ijraset.2021.36082.

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Our project mainly focuses work a lot being carried out in the ﬁeld of distributed generation. For the electric grid, so Many distributed generation systems are being made. At this time when the non-renewable sources of energy such as oil, coal, etc are very fast disappearing, a study of distributed generation systems (DGs) and Establishing of such systems using renewable sources of energy becomes very important. we have seen several major problems will happen, when harmonic content of the current is flows into the grid, like this issue several issues are going to meet. When a Distribution Generation source is being linked to the grid. “The current being injected should have harmonic content conforming to standards such as IEEE 512-1992”[1].To limit the harmonic current injected into the grid. The hardware is tailor-made to be used for a solar PV panels based distributed generation system. This project deals mainly with Establishing the hardware for a grid connected inverter. This means that a proper plan of action should be present in the required system, special type of filters are made to abolish higher order harmonics, this is only the reason why filters would be less bulky and cheap. only the higher order harmonics are decreased by specially made filters, Lower order harmonics are attenuated by a technique called “an adaptive harmonic elimination technique (AHE). In our project we need to develop several blocks called the inverter hardware, design and implementation of closed loop control, transformer, the filters along with adaptive selective harmonic elimination scheme

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44

Mendoza, Jorge, Miguel López, and Allison Delgado. "Location and Size of Distributed Generation Using Ant Colony Optimization." Applied Mechanics and Materials 492 (January 2014): 460–66. http://dx.doi.org/10.4028/www.scientific.net/amm.492.460.

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Distributed generation (DG) is a recent trend of electricity generation, which aims to use various energy sources to inject electric power in a distributed manner at points close to the load. This paper develops an optimization model to choose the sizes and positions of DG in medium voltage distribution networks in order to minimize the power system losses, given a set of constraints. Ant Colony Optimization (ACO) was used as optimization technique, with excellent results.

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45

Zarco-Soto, Fco Javier, Pedro J. Zarco-Periñán, and Jose L. Martínez-Ramos. "Centralized Control of Distribution Networks with High Penetration of Renewable Energies." Energies 14, no. 14 (July 15, 2021): 4283. http://dx.doi.org/10.3390/en14144283.

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Distribution networks were conceived to distribute the energy received from transmission and subtransmission to supply passive loads. This approach, however, is not valid anymore due to the presence of distributed generation, which is mainly based on renewable energies, and the increased number of plug-in electric vehicles that are connected at this voltage level for domestic use. In this paper the ongoing transition that distribution networks face is addressed. Whereas distributed renewable energy sources increase nodal voltages, electric vehicles result in demand surges higher than the load predictions considered when planning these networks, leading to congestion in distribution lines and transformers. Additionally, centralized control techniques are analyzed to reduce the impact of distributed generation and electric vehicles and increase their effective integration. A classification of the different methodologies applied to the problems of voltage control and congestion management is presented.

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46

Barin, Alexandre, Luis Felipe Pozzatti, Ricardo Quadros Machado, Luciane Neves Canha, Felix Alberto Farret, and Alzenira da Rosa Abaide. "Multicriteria Analysis Of Impacts Of Distributed Generation Sources On Operational Network Characteristics For Distribution System Planning Concerning Steady-state And Transient Operations." Eletrônica de Potência 14, no. 2 (May 1, 2009): 75–83. http://dx.doi.org/10.18618/rep.2009.2.075083.

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47

Ismagilov, F. R., I. H. Hayrullin, V. E. Vavilov, A. M. Yakupov, G. F. Yakupova, and R. F. Aflyatonov. "RESEARCH ON DISTRIBUTED POWER GENERATION BASED ON RENEWABLE ENERGY SOURCES AND HYDROGEN BATTERIES." Alternative Energy and Ecology (ISJAEE), no. 3-4 (April 22, 2016): 61–72. http://dx.doi.org/10.15518/isjaee.2016.03-04.005.

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48

Zharkin, A. F., V. O. Novsky, and S. O. Palachov. "TECHNICAL REGULATION OF VOLTAGE QUALITY IN ELECTRICAL GRIDS WITH SOURCES OF DISTRIBUTED GENERATION." Tekhnichna Elektrodynamika 2016, no. 3 (April 18, 2016): 55–57. http://dx.doi.org/10.15407/techned2016.03.055.

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49

AlRashidi, M. R., and M. F. AlHajri. "Optimal planning of multiple distributed generation sources in distribution networks: A new approach." Energy Conversion and Management 52, no. 11 (October 2011): 3301–8. http://dx.doi.org/10.1016/j.enconman.2011.06.001.

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50

Kim, Insu. "Short-Circuit Analysis Models for Unbalanced Inverter-Based Distributed Generation Sources and Loads." IEEE Transactions on Power Systems 34, no. 5 (September 2019): 3515–26. http://dx.doi.org/10.1109/tpwrs.2019.2903552.

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