【摘要】 电力系统稳定器(power system stabilizer,PSS)是抑制低频振荡的有效手段,其参数设计直接影响到PSS性能的优劣。为使设计的PSS参数具有良好的鲁棒性,克服传统特征值分析方法设计PSS参数的缺点,基于田口法的设计原理,以特定的李雅普诺夫函数计算出的信噪比最大化为目标函数,采用遗传算法对PSS参数进行优化设计。单机无穷大算例的仿真结果表明,通过该方法进行PSS参数优化设计,能更好地提取系统中的有用信息,大大减少了计算量,所设计的PSS具有良好的抑制振荡能力和鲁棒性,其综合性能优于传统方法。更多还原

【Abstract】 Power system stabilizer(PSS) is an effective device to suppress low-frequency oscillation in power system,so its parameter design directly influences the performance of PSS.To make the designed PSS parameters possessing good robustness to remedy the insufficiency of PSS parameters designed by traditional eigenvalue analysis method,utilizing basic design principle of Taguchi method and the maximized signal to noise ratio(SNR) calculation by specific Lyapunov function is taken as objective function and the optimal design of PSS parameters are optimized by genetic algorithm(GA).Simulation results of single-machine infinite bus system show that applying the proposed optimal design method to the design of PSS parameters the useful system information can be extracted more effectively and the calculation burden can be obviously reduced.The designed PSS possesses good oscillation suppression ability and robustness,and its comprehensive performance is superior to that of PSSs designed by traditional design methods.更多还原