Load Leveling in Distribution System by Autonomous Control of Distributed Generators

Due to the diversity of the distributed generators (DGs) such as a photovoltaic power generation system, a fuel cell, etc., the control of the future distribution system is expected to be complicated. We have proposed a new control scheme of DGs which utilizes the information on other load buses and or DGs to improve the system reliability, and have shown new technical advantages over the conventional system. In this paper, we focused on the load leveling by DGs, where DGs compensate the load fluctuation of the distribution system by their autonomous control. We propose a new control scheme of DGs, where the information on the power flow at the distribution substation and their own load bus is utilized, and the control parameters are tuned autonomously depending on the load fluctuation patterns. The simulation using the simple distribution model with 3 load buses and 2 DGs have revealed that the various types of the load fluctuations are suppressed successfully.