模糊PID结合PSS的复合励磁系统研究  

Research on Compound Excitation System Based on Fuzzy PID Combined with PSS

作　　者：刘文锋 孟伟 LIU Wen-feng;MENG Wei(State Grid Shaanxi Electric Power Co.,Ltd.Hanzhong Electric Power Supply Company,Hanzhong 723000,China)

机构地区：[1]国网陕西省电力有限公司汉中供电公司,陕西汉中723000

出　　处：《电工电气》2024年第9期27-32,共6页Electrotechnics Electric

摘　　要：为了提高同步发电机在遭遇扰动时机端电压的稳定性,同时抑制其转速、电功率和功角的低频振荡,给出了一种模糊PID(FPID)结合电力系统稳定器(PSS)的复合励磁系统,并对其设计流程进行了阐述。运用MATLAB/Simulink搭建基于单机-无穷大系统的FPID+PSS励磁控制系统仿真模型,仿真结果表明FPID+PSS励磁控制系统能够有效地提高发电机机端电压的稳定性,且对其转速、电功率和功角的低频振荡有良好的抑制作用。In order to improve the stability of the terminal voltage of the synchronous generator when it encounters disturbances,at the same time suppress the low-frequency oscillation of its rotational speed,electric power and power angle.In this paper,an compound excitation system with fuzzy PID(FPID)combined with power system stabilizer(PSS)is provided,then the designed process is also described.Using MATLAB/Simulink to build the simulation model of FPID+PSS excitation control system based on single machine-infinite system.The simulation results shows that the FPID+PSS excitation control system can effectively improve the stability of the generator terminal voltage,and has a good inhibitory effect on the low-frequency oscillation of its rotational speed,electric power and power angle.

关 键 词：同步发电机 模糊控制 PID调节 电力系统稳定器 

分 类 号：TM921.5[电气工程—电力电子与电力传动]