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对水轮发电机的起励进行了仿真研究,考虑了起励过程中发电机空载特性饱和、转子上阻尼绕组的影响。因为存在着多种发电机励磁主回路方式,这里研究了3种起励方式,即恒定直流电压下、它励和自并励晶闸管控制下的起励,得出了影响起励时间快慢的因数,在后两种情况下存在着闭环调节的作用,起励较快,然而这里起励速度也与调节器参数,比如PID的参数有关,此外转子阻尼绕组对起励速度也有影响。文章最后根据三峡水电厂700MW发电机的参数进行了上述3种起励方式的Matlab/Simulink仿真,得出了有用的结果。
The excitation of hydroelectric generator is simulated and the influence of generator saturation load and damping winding on the rotor is considered. Because of the existence of a variety of generator excitation main circuit mode, here studied three kinds of excitation mode, that is, constant DC voltage, which excitation and self-excitation thyristor control under the excitation, obtained the impact of the excitation time speed of the factor In the latter two cases, there is a role of closed-loop regulation. However, the speed of excitation is also related to the parameters of the regulator, such as the parameters of the PID. In addition, the rotor damping winding also has an impact on the excitation speed. Finally, according to the parameters of the 700MW generator of Three Gorges Hydropower Plant, the simulation results of the above three kinds of excitation modes by Matlab / Simulink show the useful results.