DocumentCode
707838
Title
The effects of neutral shifts on protective relays
Author
Perez, Joe ; Makki, Amir ; Zhao, Shijia
Author_Institution
SynchroGrid, College Station, TX, USA
fYear
2015
fDate
March 30 2015-April 2 2015
Firstpage
478
Lastpage
487
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;
fLanguage
English
Publisher
ieee
Conference_Titel
Protective Relay Engineers, 2015 68th Annual Conference for
Conference_Location
College Station, TX
Print_ISBN
978-1-4799-8721-4
Type
conf
DOI
10.1109/CPRE.2015.7102186
Filename
7102186
Link To Document