含外部储能的电力系统暂态稳定分布式控制

Distributed Control of Power System Transient Stability Including External Energy Storage

  • 摘要: 针对电力系统中存在部分控制器失效时的暂态稳定控制问题,提出一种分布式自适应控制方法以提高系统的暂态稳定性.基于二阶非线性多智能体系统的领导—跟随一致性理论,通过通信网络获取邻居发电机的实时信息,利用本地发电机与其邻居发电机之间的相对功角以及相对转速信息设计控制器,并控制外部储能装置动作,使故障后的系统快速恢复暂态稳定.利用李亚普诺夫稳定性理论进行了收敛性证明.最后,在新英格兰39节点测试系统中对控制器的性能进行深入分析,并且考虑信息攻击下部分控制器失效对系统性能的影响,仿真研究进一步验证了所提出的分布式控制方法的可行性.

     

    Abstract: We propose a distributed adaptive control method to enhance transient stability of power system for transient stability control when partial controllers fail in power system. Based on leader-following consensus algorithm of second order nonlinear multi-agent systems, we obtain the real-time information of neighbor generator through communication network, design a controller based on the information of relative angle and relative speed between the local generator and its neighbors generator, and control the external energy storage system fast recovery transient stability after failure of power system. We prove the convergence by Lyapunov stability theory. Finally, we analyze the performance of the controller in the New England 39-bus test system in depth, and consider the effect of partial controllers failure under cyber attack on the system performance. Simulation studies further validate the feasibility of the proposed distributed control method.

     

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