SVC附加控制抑制电网低频振荡的研究

Research on SVC Additional Controlling Inhabitation of Power Network's Low Frequency Oscillation

针对静止无功补偿器(SVC)在抑制电网低频振荡方面的理论和应用进行了研究。基于电力系统分析综合程序(PSASP)仿真软件,用该仿真软件提供的用户自定义功能构造了SVC附加控制模型,运用时域仿真和特征值分析方法对4机两区域电力系统的低频振荡模式和阻尼特性进行了仿真和分析,可以改善电力系统的电压稳定性和暂态稳定性,同时可以使电网获得较好的阻尼,从而较好地抑制了电网的低频振荡。

This paper researches the theory and application of the low frequency oscillation mode of power network to SVC. Based on PSASP simulation software, using the self-definition of this software, we build additional control model of SVC. Using time domain simulation and eigenvalue analysis method simulate and analyze the low frequency oscillation and damping characteristics of 4- machine 2-region system. The result improves the voltage stability and transient＇s stability of power system, also the power network gets better damping characteristics. Using this method, we can inhabit better the low frequency oscillation mode of power network.