An expert system for transformer fault diagnosis using dissolved gas analysis

Author

Lin, C.E. ; Ling, J.-M. ; Huang, C.L.

Author_Institution

Cheng Kung Univ., Tainan, Taiwan

Volume

8

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

231

Lastpage

238

Abstract

A prototype expert system based on the dissolved gas analysis (DGA) technique for diagnosis of suspected transformer faults and their maintenance actions is developed. A synthetic method is proposed to assist the gas ratio method. The uncertainties of key gas analysis, norms threshold, and gas ratio boundaries, are managed by using a fuzzy set concept. The expert system is implemented on a PC-AT using KES with rule-based knowledge representation. The system has been tested to show its effectiveness in transformer diagnosis

Keywords

automatic testing; electric breakdown of liquids; expert systems; fuzzy set theory; insulating oils; insulation testing; knowledge representation; microcomputer applications; power transformers; transformer insulation; transformer testing; automatic testing; dissolved gas analysis; electric breakdown; expert system; fault diagnosis; fuzzy set theory; gas ratio method; insulating oils; maintenance; microprocessors; norms threshold; power transformers; rule-based knowledge representation; synthetic method; Diagnostic expert systems; Dissolved gas analysis; Fault diagnosis; Fuzzy sets; Oil insulation; Power system relaying; Power transformer insulation; Power transformers; Prototypes; Uncertainty;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.180341

Filename

180341