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大型电力变压器在强迫油循环冷却过程中，由于油中带电引起不少事故，本文介绍新研制的插入式光纤传感器能反映油中带电情况，可供在线监测使用
Large power transformers in forced oil circulation cooling process, due to charged in the oil caused a lot of accidents, this article describes the newly developed plug-in optical fiber sensor can reflect the situation in the oil for online monitoring