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- 实验方案
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[IEEE 2018 53rd International Universities Power Engineering Conference (UPEC) - Glasgow, United Kingdom (2018.9.4-2018.9.7)] 2018 53rd International Universities Power Engineering Conference (UPEC) - Optimal Siting of BESS in Distribution Networks under High PV Penetration
摘要： This paper focuses on the optimal siting of Battery Energy Storage Systems (BESS) in a Distribution Network with installed Photovoltaic Generation, in order to minimize the energy losses of the system. The bus voltage limit, as well as the ampacity level of the lines are taken into consideration as constraints, while the technical constraints of the BESSs have also been taken into account. Unified Particle Swarm Optimization is used as the solving optimization technique. Simulations are being carried out on IEEE-33 bus system regarding different scenarios and the results are presented and compared. A significant improvement in energy losses, voltage and line ampacity profile is achieved by the introduction of BESS units in a Distribution Network with high PV Penetration.
关键词： BESS,Particle Swarm Optimization,Distributed Generation,Battery Energy Storage Systems,PV,optimal sizing siting of ESS,PSO
更新于2025-09-23 15:22:29
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[IEEE 2018 International Ural Conference on Green Energy (UralCon) - Chelyabinsk (2018.10.4-2018.10.6)] 2018 International Ural Conference on Green Energy (UralCon) - Concepts of Solar Batteries Integration in Linear Infrastractural Objects
摘要： Land and maintenance costs are often underestimated in solar power costs evaluation, but those become more significant as solar cell prices go down. A shared use of land, infrastructure and maintenance can both reduce the solar electricity price and boost new infrastructure projects by supplying the demanded power and acceleration of investment return. We considered the possible technical, economic and social benefits of PV integration in railroads and powerlines. Some of the conclusions could be also expanded to other linear structures, demanding land alienation (pipe lines, highways, etc.). Own energy generation could significantly reduce the investment return period of such infrastructure. A possibility of getting high DC voltages in PV systems directly could be the most demanded in the 1.5 and 3 kVDC powered railroads. The application of solar batteries could also significantly improve railroads embankment stabilization in permafrost regions, which becomes more pronounced in connection with global warming and Arctic regions development.
关键词： solar batteries,distributed generation,shared use,grid-tied,land use
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) - Kota Kinabalu, Malaysia (2018.10.7-2018.10.10)] 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) - Determination of Penetration Limit of Solar Distributed Generation (DG) Considering Multiple Bus Integration
摘要： Solar distributed generation (DG) integrated into the distribution system has contributed significant effects such as reduced power losses and improved voltage profile. The reliability and power quality of the technology may be affected at high penetration that may result to high voltage fluctuations and reverse power flow. Thus, the maximum allowable penetration level of solar DG must be determined. By using genetic algorithm as an approach, this study determines the penetration limit of solar DG in the network considering multiple bus integration. Simulations were implemented in IEEE 37-bus test system utilizing the Component Object Model (COM) interface of MATLAB and OpenDSS. Results showed that considering the penetration limit of solar DG resulted to significant improvements in power losses and voltage profile. Moreover, the maximum allowable limit of the DG installed to 18 different buses showed the highest reduction of power losses and the lowest average total voltage deviation.
关键词： power losses,OpenDSS,MATLAB,penetration limit,genetic algorithm,solar distributed generation
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE Power & Energy Society General Meeting (PESGM) - Portland, OR, USA (2018.8.5-2018.8.10)] 2018 IEEE Power & Energy Society General Meeting (PESGM) - An Iterative Approach to Improve PV Hosting Capacity for a Remote Community
摘要： Remote communities are largely supplied by diesel generating plants. With weak grid and sparse communities over a large geographical area, photovoltaic distributed generation (PVDG) with battery energy storage systems (BESS) can be a viable alternative to grid upgrade while reducing dependence on fossil fuel based generation. This paper presents results of a research study for improving the hosting capacity of distribution systems in remote communities in the northwestern part of Canada. The proposed iterative approach seeks to exploit untapped potential of existing grid infrastructure along with the four-quadrant operation of BESS to maximize the feeder's hosting capacity. The proposed approach uses the headroom of overvoltage limit made available by several voltage regulators in the remote feeder to increase its hosting capacity by as much as 25%. Based on simulations with annual load profiles and site-specific PV generation profiles, it is shown that BESS can further improve the feeder hosting capacity by up to 60% with reactive power support. A comparison is also drawn between the options of grid-upgrade versus the use of BESS for improving hosting capacity. Three BESS technologies are compared with their cost metric for this application.
关键词： hosting capacity analysis,Battery energy storage system,photovoltaic distributed generation,step voltage regulators
更新于2025-09-23 15:22:29
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Analysis of the Power Quality of a Grid-Connected Photovoltaic System
摘要： The use of Grid-Connected Photovoltaic Systems is increasingly on the rise in Brazil. Faced with this growth, it is necessary to evaluate the impacts of this source in the electric energy systems. Based on this scenario, the present work aims to analyze and quantify the impact of a grid-connected photovoltaic system connection, evaluating the Electric Power Quality indicators based on the levels specified in Module 8 of the Electric Energy Distribution Procedures in the National Electric System. To perform the data collection, an energy analyzer device was installed at the output of the grid-connected system inverter located in the Energy Laboratory of the Federal Rural Semi-Arid University, located in the city of Mossoró-RN. Using the collected data, it was possible to analyze parameters of voltage and current distortion, power factor, active, reactive and apparent power, voltage, frequency variations, and voltage unbalance. It was observed that the criteria analyzed were within the appropriate standards although there were also verified cases that there was an elevation in tension levels. Finally, it is concluded that the impacts caused are relevant within the electric system, and grid connected system performance was satisfactory, although there are still possibilities for improvements.
关键词： Power Quality,Photovoltaic System,Grid-Connected,Renewable Energy,Distributed Generation
更新于2025-09-23 15:21:01
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A Local measurement based protection technique for distribution system with photovoltaic plants
摘要： Inverter interfaced distributed generation units contribute limited fault current and thereby the current magnitude-based protection schemes find limitation for such situations. Change in penetration level of renewable energy sources with time makes available protection schemes more challenging. The distinction between load and fault current is an issue and with high resistance fault, level of fault current and load current becomes comparable. In this paper, local measurement-based protection technique is proposed that uses current and voltage signals to derive accurate protection decision for a distribution system in the presence of distributed generation units. The method uses real and reactive power calculated at the relay point for the decision. The performance of the algorithm is tested for a 33 bus distribution system simulated using DIgSILENT PowerFactory. Considering such units, the method is tested for both islanded and grid-connected modes, the varying level of distributed generation penetration and for different fault resistances. The results demonstrate the strength of the proposed method over available techniques. The proposed method is also validated using hardware-in-loop testing using Arduino NANO microcontroller and OPAL-RT simulator in real-time.
关键词： DIgSILENT PowerFactory,protection technique,photovoltaic plants,Arduino NANO,OPAL-RT simulator,distributed generation units,local measurement
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE 3rd International Electrical and Energy Conference (CIEEC) - Beijing, China (2019.9.7-2019.9.9)] 2019 IEEE 3rd International Electrical and Energy Conference (CIEEC) - Coordinated Control of Active and Reactive Power of Distribution Network with Distributed Photovoltaic Based On Scene Analysis
摘要： Variables such as distributed generation (DG) output and load demand have randomness and volatility, brings large challenges to operation and control of distribution network. In order to solve this problem, this paper generates multiple scene samples through Latin hypercube sampling (LHS) based on mathematical distribution model of variables, then reduces the scene samples by K-means clustering, typical scenes and the probability of each typical scene are obtained. Considering the adjustable capabilities of distributed photovoltaic (PV) and energy storage system (ESS), a multi-objective optimization model based on scene analysis for coordinated control of active and reactive power in distribution network is established, and the mixed integer nonlinear programming model is solved by second- order cone relaxation (SOCR) technique. Finally, the improved IEEE 33-node system is taken as an example for simulation with results confirming accuracy and rationality of the proposed algorithm.
关键词： coordinated control of active and reactive power,distributed generation,scene analysis,second-order cone relaxation
更新于2025-09-23 15:21:01
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[IEEE 2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT) - Bangalore, India (2019.5.17-2019.5.18)] 2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT) - Modeling and simulation of a Micro-grid connected with PV solar cell & its protection strategy
摘要： In the present day scenario due to change the rapid demand and over global climate change in increased the sustainable Distributed generation (DG) resources such as fuel , wind and solar. Society moving to the conventional resources like as solar, wind etc. To fill surplus demand need alternative sources like solar cell. It has a distinct concern in this scenario as it is pollution free, clean, unlimited and free. In this Paper we are design a micro-grid model by using PV cell with help of boot converter. This model is basically applicable in rural or islanded load system. Here we also discussing the operation of autonomous or grid connected microgrid model by using PV cell with help of Boost converter. PV model is completed by using MATLAB SIMULINK and different current Voltage and power levels. The MATLAB SIMULINK is done in island mode as well as grid-connected mode at the both end, grid end and load end. This study aims to understand the change of fault value Compared to healthy surgery that may serve as a cornerstone Selection of protection strategies that may work effectively both operating modes.
关键词： PV array,Distributed generation (DG),Boost converter,Relay,Voltage Source Converter (VSC),Maximum Power Point Tracking (MPPT)
更新于2025-09-23 15:21:01
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Simulating the efficient diffusion of photovoltaics in Bogot??: An urban metabolism approach
摘要： Urban metabolism has proven to be suitable for assessing the environmental performance of cities. Bogotá, one of the world’s highest-located and largest tropical cities, has made little use of rooftop photovoltaics, despite its potential. Using a simulation model, based on the urban metabolism approach, this paper examines several possible PV technology diffusion paths considering the consumer adoption processes of the residential, commercial, industrial and institutional sectors of the city. Further, the impact of PV diffusion is analyzed in terms of urban metabolism indicators such as greenhouse gas emissions and reduction of technical losses in the electricity system. Results indicate that policy is required for promoting consumer awareness about the use of PVs for meeting electricity demand. Reductions in greenhouse gas emissions of up to 820,000t of CO2 per year could be achieved. Adoption rates in the residential sector of the order of 26% could be possible. This in turn would represent an installed capacity of 1.5 GW, and emission reductions of 450,000t of CO2 per year. Additionally, the commercial sector could reach a potential installed capacity of 1.2 GW. The industrial and institutional sectors could reach an installed capacity of about 10 MW and 70 MW respectively.
关键词： Technology adoption modelling,Distributed generation,Urban metabolism,Solar panels,Bogotá
更新于2025-09-23 15:19:57
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[IEEE 2018 International conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Quetta, Pakistan (2018.11.12-2018.11.13)] 2018 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Impact of PV Penetration on Short Circuit Current of Radial Distributed Feeder and Existing Power System Protection of NUST
摘要： Integration of distributed generation into existing network can solve the problem of increasing energy demand which is due to exponential growth in world population. Integration of distributed generation has increased due to its immense advantages like low loading of transmission network, improvement in voltage profile and decrease in line losses. Despite of many advantages distributed generation also poses various adverse effects on network like harmonics, network protection, frequency instability and increase in short-circuit current level. However, it is difficult to eliminate the fault behavior due to dispersed nature of distributed generation that might affect the performance of power system protection. This is due to the change in power flow and magnitude of fault current. In this paper the effect of distributed generation on fault current level and protection of radial distribution feeder of National University of Science and Technology is studied. Three phase fault is simulated and analyzed for radial distribution network of National University of Science and Technology in MATLAB Simulink.
关键词： short circuit current,distribution system,three phase fault,PV penetration,MV distributed network,Distributed generation
更新于2025-09-19 17:15:36