Volt-Var Optimization With Power Management of Plug-In Electric Vehicles for Conservation Voltage Reduction in Distribution Systems
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This article addresses the problem of Volt-Var optimization for conservation voltage reduction (CVR) implementation in medium voltage electric distribution systems (EDS) with high penetration of renewable energy sources (RES)-based distributed generation (DG) and plug-in electric vehicles (EVs). The proposed strategy seeks to coordinate the power dispatch of aggregated electric vehicles (EVs) for EDS voltage regulation taking into account technical characteristics and the driving patterns of individual EVs. Active and reactive V2G capabilities of EV chargers are harnessed to enhance the capacity for voltage regulation and energy savings. The strategy is for the day-ahead operation scheduling, where decisions are made based on predictions of RES-based DG power production, conventional load consumption and EV driving patterns. Forecast errors are taken into account through a two-stage stochastic programming formulation, where probability density functions are used to describe the uncertainties of predicted parameters. Simulations were carried out on a 33-bus test system and results showed energy savings of up to 4.14% when EVs participate in voltage control.
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Conservation voltage reduction, electric vehicles, renewable energy sources
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Inglês
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IEEE Transactions on Industry Applications, v. 60, n. 1, p. 1454-1462, 2024.
