Title :
Application of transformer ground differential protection relays
Author :
Sutherland, Peter E.
Author_Institution :
GE Energy Services, Power Syst. Energy Consulting, 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 :
power transformer protection; relay protection; transformer windings; electromechanical relays; multifunction digital protective relay; resistance-grounded transformers; transformer ground differential protection relays; transformer windings protection; Circuit faults; Digital relays; Fault currents; Power distribution; Power system protection; Power system relaying; Protective relaying; Resistors; Substation protection; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
