励磁系统 PID 控制模型的选型探讨

摘要:

发电机励磁系统在电力系统静态及动态稳定性方面发挥巨大作用。如何根据励磁方式选择合适的励磁系统 PID 模型，基于励磁系统方式控制模型选型的盲目性及经济性考虑，从现行的自并励和励磁机励磁系统分别对励磁系 统串联的 PID 控制模型进行比较，研究选用一级超前 － 滞后或选用两级超前 － 滞后对于励磁系统的影响，并分别对 其进行仿真。结果表明，自并励系统选择一级超前 － 滞后完全可以满足励磁系统要求，励磁机系统更宜选择两级的 超前 － 滞后模型。研究结果对发电机励磁系统控制设备选型给予一定的参考。

Abstract:

Excitation system of generator plays a significant role in the static and dynamic stability of power system． How to choose the right PID model according to the excitation mode of excitation system，and considering the blindness and economy of control model selection based on excitation system modes，the PID control models series with excitation system are compared from the current self － shunt excitation system and exciter excitation system． The influence of selecting first － order lead － lag and second － order lead － lag on excitation system is studied，and its simulation results show the self － shunt excitation system selecting first － order lead － lag can fully meet the requirements of excitation system，and exciter excitation system selects second － order lead － lag model，which gives a reference to control equipment selection for generator excitation system．