同步机全平面PQ工况图的构建及工况探讨

Forming of all plane PQ figure of the synchronous machine and discussion on its operating state

依据电路和电机理论及同步电机运行时的限制条件构建了同步电机全平面PQ工况图并结合全平面PQ工况图对发电机进相、迟相、过励磁、欠励磁;电动机进相、迟相、过励磁、欠励磁;调相机过励磁、欠励磁等工况进行了探讨,最后介绍了用同步电机全平面PQ工况图来解释和理解抽水蓄能电站中同步电机的各种工况,对运行人员和学生掌握同步电机运行及调节有一定参考价值。

Based on the theory of circuit and electric machine, the paper introduces the forming of all plane PQ figure of the synchronous machine and the analysis of its operation state. Those operating states include the over-excited phase-lag operating state of the synchronous generator, the normal excited same-phase operating state of the synchronous generator, the lack-excited phase-advanced operating point of the synchronous generator, the zero load operating point of the synchronous generator, the lack-excited phase-lag operating point of the synchronous motor, the over-excited phase-advanced operating point of the synchronous motor, the over-excited phase-modulated operating point of the synchronous generator, and the lack-excited phase-modulated operating point of the synchronous generator. And it introduces how to use all plane PQ figure to explain different conditions of the synchronous machine in pumped storage hydro power station, it has some value for the operation person and student to master the operation and regulating of the synchronous machine.