关键词: 主变压器选型, 超高压, 大容量, 单相变压器组, 三相组合式变压器, 进场组装式变压器, 乌东德水电站

Abstract: In Wudongde Hydropower Station, the main transformer has high voltage levels and the largest capacity among the existing hydropower stations. Therefore, it is necessary to study the type selection of the main transformer for the design of Wudongde Hydropower Stations. We analyzed and compared single phase transformer, three-phase combined transformer and field assembly transformer in terms of manufacturing equipment, oversize component transportation, technical performance, equipment installation, maintenance and investment. At last, we selected the single phase transformer that has mature technology, stable quality, simple structure and easy maintenance.

Key words: type selection of main transformer, UHP, high capacity, single phase transformer, three-phase combined transformer, field assembly transformer, Wudongde Hydropower Station