分析了变速恒频双馈风力发电机组的工作原理,利用电力系统仿真软件PSASP搭建了含有双馈风力发电机组地区电网,分析了地区电网与主网解列后孤网运行的风电机组的频率电压特性。为含有风电场的地区电网提供在与主网解列后需考虑主要因素提供依据。
The working principle of the variable speed constant frequency(VSCF) doubly fed induction generator(DFIG) for wind turbines was analyzed.The regional grid containing doubly fed induction generator for wind turbines was built by using the power system simulation software PSASP,which was applied to analyze the characteristics of the frequency and voltage of wind power units after the regional grid disconnected from the main grid.The study provided the basis for the main factors which should be considered when the wind farm-containing regional grid disconnected from the main grid.