Title :
Application of transformer ground differential protection relays
Author :
Sutherland, Peter E.
Author_Institution :
Power Syst. Energy Consulting, GE Energy Services, Schenectady, NY, USA
Abstract :
Transformer ground differential protection relays (device 87G) have been used to protect the windings of resistance grounded transformers. A number of strategies have been utilized with electromechanical relays in the past. With the advent of the multifunction digital protective relay, these strategies can be adapted to continue this form of protection
Keywords :
earthing; overcurrent protection; power system faults; power transformer protection; relay protection; transformer windings; directional overcurrent relays; multifunction digital protective relay; percentage differential relays; protection applications; protection strategies; resistance grounded transformers; restricted earth fault relays; time overcurrent relays; transformer ground differential protection relays; windings protection; Circuit faults; Digital relays; Fault currents; Power distribution; Power system protection; Power system relaying; Protective relaying; Solid state circuits; Substation protection; Voltage;
Conference_Titel :
Industrial & Commercial Power Systems Technical Conference, 1999 IEEE.
Conference_Location :
Sparks, NV
Print_ISBN :
0-7803-5593-8
DOI :
10.1109/ICPS.1999.787224
