Abstract

In recent years, rooftop photovoltaic (PV) power generation, electric vehicle (EV) are developing quickly worldwide. However, high degree of PV penetration in residential area will cause overvoltage problem. A large number of EVs charging at the same time will cause low voltage problem. This research aims to introduce load scheduling method for voltage control in the distribution system. A day-ahead load scheduling and a real-time load rescheduling are proposed. The day-ahead scheduling is formulated as an optimization problem and solved by genetic algorithm (GA). In the real-time operation, a coordinated real-time voltage control of an on-line tap changer (OLTC) and community energy management system (CEMS) is proposed. The effectiveness of the proposed method is validated in an 1800-customer distribution system model.

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