Title :
Experience with 100% stator ground fault protection schemes
Author :
Mozina, Charles J.
Author_Institution :
Beckwith Electr. Co., Inc., Largo, FL, USA
Abstract :
This paper discusses the experiences of several users with the application of three different 100% stator ground fault protection schemes. Two third-harmonic methods and a low frequency-injection method are included. This paper explains situations in which third-harmonic schemes work, and also the limitations of these schemes, which are not well understood by many relay engineers. It also discusses the use of a low-frequency injection scheme along with its limitations.
Keywords :
earthing; electrical faults; relay protection; stators; low frequency-injection method; relay engineers; stator ground fault protection schemes; third-harmonic methods; Circuit faults; Digital relays; Fault detection; Fault location; Frequency; Grounding; Protection; Protective relaying; Stator windings; Voltage control; Generator; Generator Protection; Low-Frequency Injection; Multifunction Digital Relay; Stator Ground Fault; Third-Harmonic Method;
Conference_Titel :
Industrial & Commercial Power Systems Technical Conference - Conference Record 2009 IEEE
Conference_Location :
Calgary, AB
Print_ISBN :
978-1-4244-3398-8
Electronic_ISBN :
978-1-4244-3399-5
DOI :
10.1109/ICPS.2009.5463931
