Title :
The effects of neutral shifts on protective relays
Author :
Perez, Joe ; Makki, Amir ; Zhao, Shijia
Author_Institution :
SynchroGrid, College Station, TX, USA
fDate :
March 30 2015-April 2 2015
Abstract :
This paper has shown the benefits of viewing and determining neutrals shift by graphically showing it in the voltage triangle along with the phasor diagram. We have demonstrated how neutral shifts are observed on solid grounded, ungrounded and semi-ungrounded systems. Finally, it was determined that neutral shifts can have a direct impact on the fault phase voltage and therefore affecting protective relay performance.
Keywords :
power system protection; power system relaying; relay protection; fault phase voltage; neutral shifts; phasor diagram; protective relays; voltage triangle; Capacitance; Impedance; Protective relaying; Solids; Voltage measurement; Voltage transformers;
Conference_Titel :
Protective Relay Engineers, 2015 68th Annual Conference for
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-8721-4
DOI :
10.1109/CPRE.2015.7102186
