基于模糊自整定PID的广域电力系统稳定器设计

Abstract

本文主要研究广域电力系统稳定器的设计。首先分析了PID控制的原理及特点，结合模糊控制的特点提出了模糊自整定PID控制器及其控制方法，以适应电网的随机性。基于传统的PSS，制定了广域电力系统稳定器的设计流程，确定了模糊控制语言变量和隶属函数，并制定了模糊规则，对控制措施进行具体化。最后通过两区四机系统以及华东地区某电网进行的仿真测试了控制器设计的性能。仿真结果表明，这种控制器能有效适应电网的随机性，改善电力系统的阻尼，提高互联电网的稳定性。 The design of wide area power system stabilizer is studied in this paper. Firstly, the principle and characteristics of PID control are analyzed, and the fuzzy self-tuning PID controller and its control method based on the characteristics of fuzzy control are presented in order to adapt to the randomness of power network. Based on the traditional PSS, the design flow of the wide area power system stabilizer is analyzed, and the fuzzy control language variables and membership functions are determined, and the fuzzy rules are formulated to control the control measures. Finally, the performance of controller designed is tested by the simulation of Two Area and Four Machine Grid System and a region of East China. Simulation results show that the controller can effectively adapt to the randomness of the power grid, improve the damping of the power system and improve the stability of the interconnected power system.