Voltage regulation in distribution system utilizing electric vehicles and communication

Abstract

Challenges for the low carbon society has brought a spread of electric vehicles (EVs). Most of EVs could be charged at night simultaneously. That could cause severe voltage drop along the feeder. On the other hand, EVs are able to inject/absorb reactive power by using interfacing inverter in principle. This paper proposes active and reactive power management which can regulate feeder voltages in the distribution system avoiding short in charged energy. This paper also proposes a communication scheme among EVs and distribution system operators to realize more effective voltage regulation in the distribution system.