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

fYear

2010

fDate

25-29 July 2010

Firstpage

1

Lastpage

7

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting, 2010 IEEE

Conference_Location

Minneapolis, MN

ISSN

1944-9925

Print_ISBN

978-1-4244-6549-1

Electronic_ISBN

1944-9925

Type

conf

DOI

10.1109/PES.2010.5589734

Filename

5589734