电力系统自动化2018，Vol.42Issue(1)：105-110,6.DOI:10.7500/AEPS20170607003
基于频率响应法的发电机低励限制与PSS协调控制
Coordinated Control Between Under-excitation Limiter and Power System Stabilizer of Generator Based on Frequency Response Method
摘要
Abstract
The under-excitation limiter(UEL),as a limit part of the excitation system,has an important influence on the stability of the system.However,due to the unrational parameter setting of UEL,the positive damping effect provided by the power system stabilizer(PSS)is weakened after UEL acts.This causes the oscillation and even the serious fault of the generator frequently in the actual operation of the power grid.Based on the extended Heffron-Phillips model,a simplified model with PSS and UEL for excitation system is derived.The frequency response method is used to draw the Bode diagram of the open-loop transfer function of PSS and UEL.The frequency band of UEL and PSS is analyzed,and a specific parameter setting program of UEL is given,which can make UEL and PSS coordinated.Taking the data of Yunnan power grid for example,the single-machine infinite-bus system is developed to verify the correctness of the theory in simulation software of PSASP and MATLAB.The simulation results show that,after the UEL parameter is set by the frequency response method, the UEL action will not affect the output of the PSS,and UEL and PSS can cooperate to ensure the steady-state operation of the system.关键词
参数整定/低励限制器/电力系统稳定器/频率响应法/协调配合Key words
parameter setting/under-excitation limiter(UEL)/power system stabilizer(PSS)/frequency response method/coordination引用本文复制引用
孙博,康积涛,潘志豪..基于频率响应法的发电机低励限制与PSS协调控制[J].电力系统自动化,2018,42(1):105-110,6.基金项目
国家自然科学基金资助项目(51477143).This work is supported by National Natural Science Foundation of China(No.51477143). （51477143）
