Controller Parameter Design Method for Generator Excitation System Based on Kharitonov's Theorem and Particle Swarm Optimization

This paper is focused on the controller parameter design of generator excitation system. The traditional design method is implemented through on-site experimental tests, which has the inevitable drawbacks, e.g., long test period and life cycle loss of devices. To deal with this problem, this paper proposes a controller parameter design method on the basis of Kharitonov's Theorem and PSO. In the design process, the s-domain reduced models of synchronous generator and its excitation system are firstly given. Then, the evaluation function is established by Kharitonov's Theorem to accurately judge the stability condition of excitation system. Furthermore, the excitation controller parameters are optimized through PSO to achieve the satisfactory transient performances. Finally, experimental results on a real-time digital system (RTDS) test bench have validated the effectiveness of the proposed controller design method.