【摘要】 在研究风电场对电网影响时,为节省仿真时间,常常利用简化的异步电机模型或通过多机等值来简化由多台风电机组组成的风电场模型。笔者提出基于同步发电机传递函数概念的多台异步发电机等值的参数辨识方法,并采用最小二乘法计算等值异步发电机的同步电抗、暂态电抗和转子时间常数。利用MATLAB/SIMULINK工具箱的仿真结果表明了该等值方法的有效性。更多还原

【Abstract】 When the effects of wind farms on power system are researched, to save the calculation time the simplified model of asynchronous motors are often used or the wind-farm consisting of many wind-turbines can be simplified by multi-machine dynamic aggregation. Here, an aggregation method for parameters identification of many asynchronous generators based on the concept of the transfer function of synchronous generator is put forward, in which the synchronous reactance, transient reactance and rotor time constant are calculated by least square method. The aggregation of three asynchronous generators is simulated by MATLAB/SIMULINK and the simulation results show that the presented method is effective.更多还原