期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：3
页码：1-6
DOI：10.1088/1755-1315/252/3/032186
出版社：IOP Publishing
摘要：In order to analyze the abnormal problem of acetylene content in a 220kV transformer, field tests and return-plant tests are carried out. Through disintegration and checking the running records, it is considered that the problem of system overvoltage and insulating cardboard are the fundamental reasons. Finally, precautions and suggestions are put forward.
