Summary

Stator ground faults are the most common winding failure in generators, and this kind of fault occurs due to stator winding insulation breakdown and electrical contact between the active phase winding and the grounded stator core. This document analyzes different grounding schemes, the effect of phase-to-ground faults will be reviewed, and stator winding ground systems and protection systems will be analyzed, including calculation criteria for stator winding grounding devices.

Additional informations

Publication type Technical Brochures
Reference 573
Publication year 2014
Publisher CIGRE
Study committees Power Generation and Electromechanical Energy Conversion (A1)
Working groups WG A1.14
File size 1 MB
Pages number 39
Price for non member 90 €
Price for member Free
Guide for Minimizing the Damage from Stator Winding Ground Faults on Hydrogenerators
Guide for Minimizing the Damage from Stator Winding Ground Faults on Hydrogenerators