双层叠绕组发电机单元件横差保护特性分析

通过1号机横差保护动作的现象,对故障进行分析,得出测量双星形中性点电流作为双层叠绕组发电机单元件横差保护的,横差动作的原因可能是定子绕组匝间发生短路,也可能是转子匝间短路或者转子偏心引起磁场不均匀也会引起的结论,该结论对现场维护人员有一定得指导意义。

Analysis of Double-Layered Winding Gene ato s Unit-Transverse Differential Protection

Based on transverse differential protection of generator by unit 1, failure analysis shows double-layered winding generator differential protection is to use binary cross-shaped stator winding inter-turn short circuit protection, the transverse differential protection is not necessarily reason for the action is the stator winding inter-turn short circuit, but also may be due to uneven rotor excitation windings or the magnetic field caused by rotor eccentricity and conclusions, the conclusions provides references for on-site maintenance personnel.