220kV电缆终端爆炸事故原因诊断及其电场仿真  

Reason Diagnosis for 220kV Cable Terminal Explosion and its Field Simulation

作　　者：杨代勇[1] 李宏毅[2] 王朔[1] 司昌健[1] 赵春明[1] 刘聪[3] 杜海 

机构地区：[1]国网吉林省电力有限公司电力科学研究院,长春130021 [2]吉林石化公司,吉林吉林132022 [3]国网白城供电公司,吉林白城137000 [4]长春龙源电力设备有限公司,长春130033

出　　处：《吉林电力》2014年第4期14-16,39,共4页Jilin Electric Power

摘　　要：介绍了一起220kV电缆终端爆炸事故,应用ANSYS软件建立了应力锥安装时混入微小气泡和导电杂质两种情况的220kV电缆电场分析模型,并进行了静电场仿真分析,通过设备解体和电场仿真结果分析指出,电缆终端安装工艺不良混入气泡或杂质造成电缆终端由局部放电发展成贯穿性放电,最终造成爆炸事故。A 220 kV cable terminal explosion accident has been introduced. 220 kV cable electric field analysis models for mixing with micro air bubble or conducting impurities during stress cone installation have been established by ANSYS software. Electrostatic filed simulation has also been carried out. The accident reason has been obtained by equipment disassembly and electric field simulation. Mixing with bubble or conducting impurities during cable terminal installation induced partial discharging spreading into penetrating discharging, which finally caused explosion accident.

关 键 词：220 KV电缆 爆炸 应力锥 电场 仿真 

分 类 号：TM247[一般工业技术—材料科学与工程]