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介绍了水轮发电机空载、负载及其在突然三相短路后灭磁的仿真结果,发电机的数学模型是建立在d,q坐标轴的派克(Park)同步电机微分方程组的基础上,考虑了转子上阻尼绕组的效应,此外发电机空载特性用近似的分析表达式表示,以计及其非线性,使易于仿真和提高可信度,最后给出了以长江三峡水电厂700MW发电机为例的各种工作情况下用ZnO灭磁的Matlab/Simulink仿真结果。
The simulation results of no - load, load and demagnetization of hydrogenerator after sudden three - phase short circuit are introduced. The mathematical model of generator is based on Park differential equations of Park synchronous motor in d and q axes , Considering the effect of damping winding on the rotor. In addition, the no-load characteristic of the generator is expressed by the approximate analytical expressions to take account of its nonlinearity, which makes it easy to simulate and improve the reliability. Finally, Generator as an example of various working conditions using ZnO demagnetization Matlab / Simulink simulation results.