文章摘要
Failure Analysis of Rubber Sealing Rings in Electrical Equipments
Received:November 04, 2022  Revised:November 04, 2022
DOI：10.12136/j.issn.1000-890X.2024.08.0604
Key Words: transformer；GIS；rubber sealing ring；failure analysis
Author NameAffiliationE-mail
ZHANG Jie 国网浙江省电力有限公司电力科学研究院 524063738@qq.com 
ZHAO Zhoufeng* 国网浙江省电力有限公司电力科学研究院  
ZHOU Yutong 国网浙江省电力有限公司电力科学研究院  
QIU Lyuchao 国网浙江省电力有限公司电力科学研究院  
LIU Xueguang 国网浙江省电力有限公司电力科学研究院  
ZHANG Jun 武汉大学?动力与机械学院  
SONG Tao 武汉大学?动力与机械学院  
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Abstract:
      The failures of the rubber sealing rings in transformer and gas insulated switchgear（GIS）were analyzed.The results showed that，there were two cracks with 1 mm of length existed on the side of the fault phase rubber sealing ring in the fault transformer，at the same time Shore A type hardness of the rubber sealing ring increased and rebound value decreased，the rubber sealing ring appearanced aging failure phenomenon.For the cracked rubber sealing ring in GIS，the mass fraction of Zn element in crack initiation ponit was higher than that of section step area，that was to say the filler of the rubber sealing material was not evenly dispersed，so the physical properties of the rubber sealing ring reduced，the rubber sealing ring appearanced cracking failure phenomenon.
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