摘要
给出了异步风力发电机的数学模型,分析了异步风力发电机引入系统的振荡模式,在异步感应风力发电机的桨距角控制系统中引入电力系统稳定器(PSS)环节,来提高系统阻尼来加快平息振荡,对桨距角控制系统进行了相频特性分析,并用MATLAB对PSS参数进行了整定,用三种运行方式验证了参数整定的有效性和PSS抑制低频振荡的能力。仿真结果表明,整定后的PSS对低频振荡具有良好的抑制作用。
A complete mathematical mode of asynchronous wind generator was given, and the oscillation mode which was introduced into the system by asynchronous wind generator was analyzed. On this basis, by means of leading power system stabilizer （PSS） to the pitch control system of asynchronous generator, the asynchronous generator could offer additional damping to quell the oscillation. The phase-frequency analysis was made in the pitch control system, and it used MATLAB to optimize the parameters of PSS. It verified the validity of the parameters and the ability of the power system stabilizer to suppress low-frequency oscillations in three modes. The simulation results illustrated that the PSS with the settings has good inhibitory action to low-frequency oscillations.
出处
《电机与控制应用》
北大核心
2013年第8期52-56,共5页
Electric machines & control application
关键词
异步风力发电机
系统阻尼
相频特性
参数整定
电力系统稳定器
asynchronous wind generator
system damping
phase-frequency characteristic
parametersoptimize
power system stabilizer （ PSS ）
