Calculation of a Health Index for Oil-Immersed Transformers Rated Under 69 kV Using Fuzzy Logic

Author

Abu-Elanien, Ahmed E B ; Salama, M.M.A. ; Ibrahim, M.

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Waterloo, Waterloo, ON, Canada

Volume

27

Issue

4

fYear

2012

Firstpage

2029

Lastpage

2036

Abstract

This paper presents a new method for calculating a health index for transformers (for operating voltage 69 kV or less) based on diagnostic tests. The method relies on the use of furan analysis, dissolved gas analysis, and other oil analysis results as a means of calculating the health index using fuzzy set theory. Real field data for 90 working transformers were used to test the proposed method. The results were compared with the results calculated for the same set of transformers by an experienced asset management and health assessment consulting company. The comparison shows that the results are highly reliable.

Keywords

asset management; chemical analysis; fuzzy logic; fuzzy set theory; transformer oil; asset management; diagnostic tests; dissolved gas analysis; furan analysis; fuzzy logic; fuzzy set theory; health assessment consulting company; oil-immersed transformers; real field data; transformers health index; Asset management; Circuit faults; Fuzzy logic; Oil insulation; Power transformer insulation; Transformers; Asset management; condition monitoring; fuzzy logic; health index; transformer end of life; transformer health;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2012.2205165

Filename

6255812