Title :
Coordination of overexcitation limiter, field overcurrent protection and generator control
Author :
Pajuelo, Eli ; Gokaraju, Ramakrishna ; Sachdev, M.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Saskatchewan, Saskatoon, SK, Canada
Abstract :
The overexcitation limit of synchronous generator plays an important role in the voltage stability of power systems. Achieving maximum use of the overexcitation capability requires adequate coordination between generator control and protection. This paper provides an example of coordination between overexcitation limiter (OEL), field overcurrent protection and automatic voltage regulator (AVR) for a synchronous generator. The coordination achieved is then verified by a model simulation using an electromagnetic transient program for practical scenarios of interest. Suggested modifications to the ST1A type exciter model are presented to represent the complete functionality of the OEL function.
Keywords :
EMTP; current limiters; machine control; machine protection; overcurrent protection; synchronous generators; voltage regulators; automatic voltage regulator; electromagnetic transient program; field overcurrent protection; model simulation; overexcitation limiter coordination; synchronous generator control; voltage stability; Over excitation limiter (OEL); excitation controls; generator controls; synchronous machines;
Conference_Titel :
Power and Energy Society General Meeting, 2010 IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-6549-1
Electronic_ISBN :
1944-9925
DOI :
10.1109/PES.2010.5589734
