複数家庭で構成される電力システムの蓄電池を用いた出力平滑化制御

Abstract

This paper addresses output smoothing control of an electric power system with multiple homes. The notion of home is a unit of small-scale power system closed to consumers. A home consists of local renewable-based energy source, energy storage, load, power conversion circuit, and control system. Output smoothing control aims to regulate the output power of a single home or coupled multiple homes to the outside of it and is expected to reduce the influence of fluctuating renewable sources to the outside, e.g. a commercial distribution grid. In this paper, we propose a batterybased algorithm for the output smoothing control and demonstrate its effectiveness in a practical, residential power system with two homes. In addition to the practical demonstration, by deriving a mathematical model for dynamics of active power flow in the controlled system and analyzing the model numerically and theoretically, we provide a guideline of tuning the feedback gain of the algorithm for a desired control response.