Grounding fault location of large turbo generator based on stator winding distribution

Stator grounding is the most common fault of a large generator. If accurate coil can be located quickly and effectively, maintenance progress generator greatly sped up, put back into use as soon possible. For this purpose, stator location method for steam proposed, which takes distribution winding potential account. Firstly, characteristics influence are analyzed when single-phase ground occurs in generator, amplitude equation phase zero sequence voltage constructed. On basis, analytically expressed, so directly calculated by numerical solution method. Simulation analysis verifies effectiveness proposed