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[IEEE 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Gramado, Brazil (2019.9.15-2019.9.18)] 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Impact Evaluation in Tap-Change Voltage Regulators within Photovoltaic Generation
摘要： Electricity distribution networks must be carefully evaluated in order to benefit from the insertion of distributed generators. Considering the insertion of photovoltaic systems, the continuous movement of clouds can produce variations of difficult predictability on the voltage levels and the power flow generated. Therefore, it is important to know methods to minimize such impacts, evaluating the iteration between generators and voltage regulators, so that the quality of electricity supply remains within the allowable range. The aim of this work is to investigate the performance of tap-on-load and tap changers (OLTC) using the IEEE 34 bus system. Thus, it was considered the presence of photovoltaic generators in IEEE 34 bus system, with different generation conditions, load characteristics (constant or variable) and actuation adjustment time of the regulating equipment. The use of analyzes known as Quasi-Static Time-Series for the electrical simulations were performed the Open Distribution System Simulator (OpenDSS) software.
关键词： On Load Tap Changer,Voltage Levels,Photovoltaic Generation
更新于2025-09-16 10:30:52
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Photovoltaics and opportunistic electric vehicle charging in the power system – a case study on a Swedish distribution grid
摘要： Renewable distributed generation and electric vehicles (EVs) are two important components in the transition to a more sustainable society. However, both pose new challenges to the power system due to the intermittent generation and EV charging load. In this case study, a power system consisting of a low- and medium-voltage rural and urban distribution grid with 5174 customers, high penetration of photovoltaic (PV) electricity and a fully electrified car fleet were assumed, and their impact on the grid was assessed. The two extreme cases of two summer weeks and two winter weeks with and without EV charging and a PV penetration varying between 0 and 100% of the annual electricity consumption were examined. Active power curtailment of the PV systems was used to avoid overvoltage. The results show an increased electricity consumption of 9.3% in the winter weeks and 17.1% in the summer weeks, a lowering of the minimum voltage by 1% at the most, and a marginal contribution by the EV charging to lower the need of PV power curtailment. This shows the minor impact of EV charging on the distribution grid, both in terms of allowing more PV power generation and in terms of lower voltage levels.
关键词： distribution grid,photovoltaic,voltage levels,power curtailment,electric vehicle
更新于2025-09-16 10:30:52