Power Stations

15 Years of Experience with 100% Generator Stator Ground Fault Protection - What Works, What Doesn't and Why

This paper discusses the application of three different 100% stator ground fault protection schemes. Two third-harmonic methods and a low frequency-injection method are discussed. Third-harmonic schemes have been widely applied on generators within the U.S. to provide stator ground fault protection over the entire stator winding. More

Ad: My Dad Tests Multi-Ratio CTs ... and with the CT Analyser and the new CT SB2 it's all automated.
Ad: Do you think the demands on your substation have changed in 50 years? Then why are you still using 50-year old test switch technology?
Ad: ABB Relion®. The perfect choice for every application.