考虑信息结构约束的多机系统励磁控制协调

提出了一种考虑信息结构约束时协调设计励磁控制器的新方法。首先基于信息结构的概念,将控制器的设计转化为特定信息结构下的最优控制问题,然后将推广的最小误差激励法用于该问题的求解,从而求出反馈增益矩阵。仿真结果表明,与分散协调励磁控制相比,引入有价值的远方信号所得到的励磁控制策略能够增强阻尼,提高系统稳定性。

Coordination of excitation control with information structure constraint in multi-machine power system

This paper proposes a new approach to coordinated design of excitation controller under information structure constraint.Based on the concept of control information structure,design of the excitation controller is formulated into the optimal control problem with a given information structure.Then the method of minimum erratum excitation is extended to solve this problem and find the feedback gain matrix.Simulation results show that the resulted excitation control scheme which adds valuable remote signals to decentralized information structure have advantage over decentralized coordinated excitation control in improving oscillation damping ability and system stability.