Study on Voltage Control and Load Leveling by VPP Operation with Stationary Battery and Photovoltaic Generation in Distribution System

摘要

In recent years, distributed energy resources (DERs), especially photovoltaic generation systems have been increased in Japan. However, it may be difficult to keep a balance between supply and demand in a power system. In the circumstances, Virtual Power Plant (VPP) is expected to be a method for adjustment among them. On the other hand, even if the VPP is constructed in a distribution system, distribution line voltages have to be properly regulated within an appropriate range. In this paper, authors investigate the effect of the reactive power control by a utility interactive inverters in case of some possible VPP operations. As a result, distribution line voltages can be regulated by the reactive power control.