10 kV T型电缆接头在交界面爬电下的多物理场特性研究  

Research on Multi-physical Field Characteristics of 10 kV T-type Cable Joint Under Interface Arc Creepage

作　　者：邱冬[1] 刘刚 李旭 石聪聪 张圆明 QIU Dong;LIU Gang;LI Xu;SHI Cong-cong;ZHANG Yuan-ming(State Grid Suqian Power Supply Company,Suqian 223800 China)

机构地区：[1]国网宿迁供电公司,江苏宿迁223800

出　　处：《自动化技术与应用》2023年第11期179-183,共5页Techniques of Automation and Applications

基　　金：国网江苏省电力有限公司科技项目(J2020143)。

摘　　要：T型电缆接头是环网柜重要组成部分,环网柜内电缆接头处若出现故障,极易引发电缆线路故障停电、设备损坏等事故。本文分析了T型电缆终端接头典型缺陷型式及有限元模拟方法,研究了T型电缆终端接头在绝缘交界面典型爬电缺陷下的电场、温度场分布特性。研究结果表明,在不同程度交界面爬电缺陷下,对于电场分布,上护套外部路径的电场强度增加了约54.2%和59.3%。对于热场分布,四个典型路径上,最大温升值可达5.56℃。本文研究结果可为环网柜T型电缆终端运行状态的在线监测及故障诊断提供参考。T-type cable joint is an essential part of the ring cabinet.If there is a fault at the cable joint in the ring main cabinet,it is straightforward to cause cable line fault,power failure,equipment damage and other accidents.In this paper,the typical defect types and finite element simulation method of T-type cable terminal joint are analyzed.The distribution characteristics of the electric field and temperature field of the T-type cable terminal joint under typical creepage defects at the insulation interface are studied.The results show that under different levels of the interface creepage defect,for the electric field distribution,the electric field strength of the outer path of the upper sheath increases by about 54.2%and 59.3%.The maximum temperature value may increase by 5.56℃.The research results of this paper can provide a reference for on-line monitoring and fault diagnosis of T-cable terminal operation state of ring network cabinet.

关 键 词：环网柜 T型电缆终端 绝缘交界面爬电 有限元 电热场 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]