发电机转子匝间短路实时在线监测的应用

Online Monitoring of the Rotor Turn-to-turn Short Circuit

通过对发电机转子电磁特性分析。确立了匝间短路故障严重程度和有效磁场损失之间的定性对应关系。在考虑磁场饱和的条件下。建立了转子匝间短路故障诊断数学模型,通过计算有效磁场损失导致的发电机电气参数变化,特别是对无功输出的影响,建立在线识别转子匝间短路故障的判据,并采用现场匝间短路故障记录数据加以验证。

The mathematical model of the rotor turn - to - turn short circuit under the consideration of the magnetic saturation is established. A criterion for fault diagnosis is also given.