有限元分析40.5kV穿墙瓷套管绝缘故障研究  

Research of 40. 5 kV Ceramic Wall Bushings Insulation Fault Based on Finite Element Analysis

作　　者：彭晶[1] 赵现平[1] 王科[1] 谭向宇[1] 项恩新 张恭源[1] 程志万[1] 刘红文[1] 黄然[1] 丁薇[1] 

机构地区：[1]云南电网公司电力研究院,昆明650217

出　　处：《云南电力技术》2014年第3期39-42,共4页Yunnan Electric Power

摘　　要：使用有限元分析方法对40.5 kV穿墙瓷套管绝缘故障进行了分析。得出故障类型,再对40.5 kV穿墙瓷套管状态良好时和两种典型绝缘故障情况时的电场分布进行了研究,研究结果表明:两类典型绝缘故障均会造成穿墙瓷套管发生严重的放电现象,且内表面半导体釉未与导电排等电位造成的后果是最严重的,对两类典型绝缘故障提出了预防措施。In recent years, 40. 5 kV ceramic wall bushings insulation fault repeatedly happened in Yunnan Power Grid Corporation. In order to identify the cause and to avoid this kind of failure, technicians used the finite element analysis method for fault analysis and research. The analysis result showed that the ceramic wall bushings typical insulation fault could divide into two categories： semiconducting glaze on the inner surface of the ceramic is not equipotential with the conductor; semiconducting glaze on the outer surface of the ceramic is not equipotential with the earth. Then based on finite element analysis method, the electric field distribu- tion of 40. 5 kV ceramic wall bushings in good conditions and in two categories of typical insulation fault was studied. The research result showed that serious discharge phenomenon could happen as a result of two categories of insulation fault, and the consequence of the second category is most serious. Meanwhile, precaution of the two categories of insulation fault was proposed.

关 键 词：40 5 kV穿墙瓷套管 绝缘故障 有限元分析 

分 类 号：TM216.5[一般工业技术—材料科学与工程]