Loop power flow control and voltage characteristics of distribution system for distributed generation including PV system

When distributed generation (e.g., PV) is installed for feeder imbalance, it is difficult to maintain a proper voltage range. In such cases, a loop distribution system has an advantage at voltage fluctuation. A loop power flow controller (LPC) may be expected to control loop distribution systems without any increase in short-circuit current. In this paper, we describe the relationship between loop power flow control and voltage characteristics for distributed generation, and propose a simple control method using local voltage information. The result of our simulation shows that the proposed control method for the LPC balances the power flow and regulates the voltage with stable operation.