On-load tap-changers current experience and future development: Users experience and perspective

Author

Spence, G. ; Hall, A.C.

Author_Institution

Div. of Technol. & Sci., Nat. Grid Co. plc, Leatherhead, UK

fYear

1995

fDate

11/9/1995 12:00:00 AM

Firstpage

42370

Lastpage

42376

Abstract

On-load tap-changers may represent only 5-100 % of the capital cost of a supergrid power transformer yet their operational performance and reliability is critical to realising the full asset life of the transformer. In addition, tap-changer inspections largely govern the frequency and duration of transformer circuit outages and represent a high proportion of transformer maintenance costs. This paper presents a summary of the National Grid Company´s (UK) experience in such tap-changers in recent years. This experience, the changes in specification and the user-supplier relationships described are believed to be representative of a major electric utility

Keywords

electricity supply industry; load (electric); maintenance engineering; power system reliability; power transformers; National Grid Company; UK; asset life; current experience; electric utility; future development; inspections; on-load tap-changers; operational performance; reliability; specification; supergrid power transformer; transformer circuit outages; transformer maintenance costs;

fLanguage

English

Publisher

iet

Conference_Titel

Developments On-Load Tapchangers: Current Experience and Future, IEE European Seminar on

Conference_Location

Regensburg

Type

conf

DOI

10.1049/ic:19951236

Filename

499565