分散型電源を含む連系電力系統に対する反復勾配法を用いた負荷周波数制御

抄録

This paper deals with load frequency control problem of power system. In recent years, due to the large introduction of generators using renewable energy, the relative load fluctuation increases, making it difficult to maintain power balance. Therefore, this paper proposes frequency control method using Moving Horizon Estimation and iterative gradient method for connected power system. In this paper, since system handles frequency control problems in real time, the system manager needs to grasp all states of power system every moment, and estimates the state of power system by using Moving Horizon Estimation. Next, control inputs are determined such that each area minimizes evaluation function including barrier function considering constraint conditions for generator and battery by using iterative gradient method. At this time, since the control target is connencted power system, it is represented as a model including the state of adjacent area, so that each area shares information with each other and performs cooperative control between areas. Finally, simulation of load frequency control using Moving Horizon Estimation and iterative gradient method is carried out and the effectiveness is confirmed.