Application of a Wide Area Backup Protection Expert System to Prevent Cascading Outages

Author

Tan, J. C. ; Crossley, P. A. ; Laren, P. G. M. ; Gale, P. F. ; Hall, I. ; Farrell, Jay A.

Author_Institution

University of Manitoba, Winnipeg, MB, Canada; UMIST, Manchester, U.K.; Hataway; NGC; Scottish Power

Volume

22

Issue

1

fYear

2002

Firstpage

71

Lastpage

72

Abstract

A strategy to prevent cascading outages in power systems is proposed in this paper. The strategy employs wide-area back-up protection and artificial intelligence techniques to minimize the impact of a fault on a network. There are two ways in which wide-area backup protection can prevent cascading trips leading to a wide spread blackout: 1) Precise location of a fault so that only the circuit breakers necessary to isolate the fault are tripped; and 2) Avoidance of unnecessary trips, due to hidden failure or overloading, by blocking the trip signals of conventional back-up protection relays. The limitations of conventional back-up protection are examined and methods of improvement are presented.

Keywords

Bayesian methods; Circuit faults; Expert systems; Fault location; Phase detection; Power harmonic filters; Power system faults; Power system protection; Power transformer insulation; Signal analysis; Cascading outages; back-up protection; hidden failures; intelligent systems; wide area protection;

fLanguage

English

Journal_Title

Power Engineering Review, IEEE

Publisher

ieee

ISSN

0272-1724

Type

jour

DOI

10.1109/MPER.2002.4311698

Filename

4311698