A logic based expert system (LBES) for fault diagnosis of power system

Author

Park, Young Moon ; Kim, Gwang-Won ; Sohn, Jin-Man

Author_Institution

Dept. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

12

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

363

Lastpage

369

Abstract

This paper proposes an expert system for fault diagnosis of a power system using a new inference method. Expertise is, in this paper, represented by logical implications and converted into a Boolean function. Unlike conventional rule-based expert systems, the expertise is converted into Prime Implicants (PIs) which are logically complete and sound. Therefore, off-line inference is possible by off-line identification of PIs, which reduces the on-line inference time considerably and makes it possible to utilize the proposed expert system in real-time environment. This paper also presents alarm verification and correction method for relay and circuit breaker (CB) using pre-identified PIs

Keywords

Boolean functions; circuit breakers; diagnostic expert systems; fault location; inference mechanisms; power system analysis computing; Boolean function; Prime Implicants; alarm verification; circuit breaker; correction method; fault diagnosis; inference method; logic based expert system; off-line identification; off-line inference; on-line inference time reduction; power system; real-time environment; relay; Boolean functions; Circuit breakers; Diagnostic expert systems; Expert systems; Fault diagnosis; Logic; Power engineering and energy; Power system faults; Power system relaying; Production systems;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.574960

Filename

574960