Title :
New general method for digital differential protection relay
Author :
Habibabadi, Reza Ashrafi
Author_Institution :
Islamic Azad Univ., Natanz, Iran
Abstract :
In this paper, computational aspects of a digital transformer differential relay is described. DPFC percent differential protection reflects deviation of load condition which can perform a sensitive protection for the transformer. The ability of Inrush Current Detection with Waveform Distortion Discrimination Principle is discussed and demonstrated. Test results of the proposed algorithm highlight the abilities of the algorithm. Test results for external fault, internal fault and inrush current are presented in the paper.
Keywords :
power transformer protection; relay protection; digital differential protection relay; digital transformer differential relay; external fault; inrush current detection; internal fault; load condition; waveform distortion discrimination principle; Circuit faults; Fault currents; Power transformers; Relays; Software algorithms; Surge protection; Surges; DPFC method; Digital Protection; Transformer Differential Relay;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6135013
