Development and application of the 275 kV 300 MVA separate-cooling, sheet-winding gas-insulated transformer

Author

Muramoto, H. ; Yamazaki, T. ; Oshi, T. ; Uehara, K. ; Toda, K. ; Ikeda, M. ; Yanabu, S.

Author_Institution

Tokyo Electric Power Co. Ltd., Japan

Volume

7

Issue

2

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

888

Lastpage

894

Abstract

In 1989, a 154 kV, 200 MVA gas-insulated power transformer was commissioned and has been operated with a satisfactory operating record. Utilizing this development experience and introducing new technology, a 275 kV, 300 MVA gas-insulated power transformer has been developed. The compact design of the main-gap insulation is important, and its reliability has been verified. The turn-to-turn insulation, which is made of PET film insulation has also been verified under severely stressed test conditions. The design of the 300 MVA gas-insulated transformer is described

Keywords

gaseous insulation; organic insulating materials; polymers; power transformers; reliability; transformer insulation; transformer windings; 275 kV; 300 MVA; PET film insulation; gas-insulated transformer; main-gap insulation; polyethylene terephthalate; reliability; sheet-winding; turn-to-turn insulation; Cities and towns; Fires; Gas insulation; Oil insulation; Positron emission tomography; Power supplies; Power system reliability; Power transformer insulation; Power transformers; Substations;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.127095

Filename

127095