摘要
电力系统控制算法收敛性分析是衡量电力系统控制性能好坏的重要方法,算法收敛性决定了算法实现的可行性。迭代辨识算法是现代电力系统阻尼控制的一种重要控制方法,本文针对提出的一种考虑时滞的迭代辨识广域阻尼控制器算法,首先简述了该迭代辨识广域阻尼控制算法的基本步骤;其次把电力系统迭代辨识算法等效成分割系统,通过证明分割系统的稳定性间接证明了该算法的收敛性;然后又采用Q因子法分析了该算法的收敛速度;最后与其它方法在收敛速度上进行了对比,并分析了Vinnicombe的动态变化过程。仿真结果表明,本文提出的迭代辨识算法能在10秒内有效收敛,收敛速度较快。
The convergence of power system algorithm is one of the indexes to measure the performance of power system algorithm. The convergence determines the feasibility of algorithm. The iterative identification algorithm is an important control method of modern power system control. In this paper, a new algorithm for iterative identification of wide-area damping controller is proposed. Firstly, the basic steps of the iterative identification wide-area damping control algorithm are briefly introduced. Secondly, the algorithm convergence is proved by using the method of segmentation system. Then, the convergence rate of the algorithm is analyzed by Q factor method. Finally, the convergence speed is compared with other methods. Simulation results show that the proposed algorithm can converge effectively and converge faster.
