基于RTDS与MATLAB的双馈感应风电机组动态特性仿真比较

摘要

以MATLAB/Simulink中双馈感应风电机组(DFIG)的平均值模型为依据,首先在RTDS/RSCAD中相应搭建DFIG的平均值模型；然后对MATLAB与RTDS的仿真方法进行比较；最后在单机无穷大系统中分别就初值、风速扰动和故障扰动下的变速风电机组的动态响应特性在MATLAB和RTDS平台上进行比较验证.仿真结果表明,RTDS不仅可准确移植其他平台的风机模型,而且可以在始终保持仿真-实际时间比为1.0的前提下提供更详细的状态量信息.%The DFIG (Doubly-Fed Induction Generator) average model is constructed on RTDS/RSCAD platform based on the DFIG average model of MATLAB/Simulink and the simulation method is compared between MATLAB and RTDS. Based on a constructed one-machine-infinite-bus system,the dynamic response characteristics of DFIG are simulated on MATLAB and RTDS platforms respectively for comparative validation,including initial value,wind speed disturbance and fault disturbance. Simulative results show that, RTDS can accurately transplant the DFIG model from other simulation platforms, and provide more detailed information about state variables while keeps the ratio of simulation time to real process time as 1.0.