IEEJ Transactions on Power and Energy
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
Development of 275kV Liquid Cooling Type Gas-Insulated Transformer
Taizo HasegawaTakashi BetsuiShuichi OnishiKatsuaki ItohToyokazu KohanYoshihiro MakinoHiroshi Nakazawa
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1990 Volume 110 Issue 12 Pages 999-1005


Construction of 275kV and 500kV substation in densely populated area is thought to be necessary in the future to keep stable supply of electricity. Using gas-insulated transformer is now considered for substations because gas-insulated transformers are non-frammable and non-explosive. Since completion of 77kV gas-insulated transformer in 1979, we have continued to research to develope gas-insulated transformers applicable to higher voltage level up to 500kV. As the results of the research, 275kV, 300 MVA liquid cooling type gas-insulated transformer has been developed. We introduce the abstruct of our study.

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