10kV绝缘导线雷击断线事故原因及防护措施  

10kV Insulated Conductor Lightning Strike Accident Causes and Protective Measures

作　　者：侯景鹏[1] 艾建[1] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012

出　　处：《电源技术应用》2013年第12期70-73,共4页Power Supply Technologles and Applications

摘　　要：通过对10kV雷击断线事故的调查，分析了雷击断线机理，从线路的耐雷水平与绝缘强度、雷电流及工频短路电流作用时间、工频短路电流与雷电流产生的热量、雷电流的冲击效应、高温下导线的应力作用、设计规范存在的问题6个方面阐述影响10kV绝缘导线雷击断线因素。针对雷击断线，提出国内常用的四种防护措施，并作出技术经济比较，为妥善解决雷击绝缘导线断线提供技术指导。On 10 kV of lightning strike accident investigation,mechanism of lightning strike is analysed, lightning resisting level of from the line and arc rate, lightning current and short circuit power frequency current time, short circuit power frequency current,and the heat generated by the lightning current and lightning current impact effect,high temperature wire tension,design specification and design of ill-advised six aspects,the influencing factors of 10 kV insulated conductor lightning strike are expounded. Domestic commonly used against lightning strike,and puts forward four kinds of protective measures,and make a technical and economic comparison,provide technical guidance to properly solve the lightning conductor insulation break line.

关 键 词：绝缘导线 雷击断线 穿刺式防弧金具 防雷支柱绝缘子 

分 类 号：TM862[电气工程—高电压与绝缘技术]