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基于场路耦合等效磁网络结构的水轮发电机建模方法

, PP. 275-280

Keywords: 水轮发电机,等效磁网络,场路耦合模型,动态特性仿真

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Abstract:

应用磁网络结构对一台7.5kW水轮发电机模型机建立了等效磁网络模型。建模过程中对于转子旋转产生的气隙网络变化的问题,提出了一种新的气隙网络划分方法,即重合磁位线法。进一步将电机的电路方程与磁场方程进行耦合,得到了水轮发电机的场路耦合等效磁网络动态特性仿真模型,可以对发电机各种工况进行仿真计算。通过对空载和空载三相突然短路两种工况的仿真与实验对比分析,验证了该模型的正确性。为大型水轮发电机的动态特性研究提供一定的理论依据。

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