摘要
我国西北地区风害严重,直接威胁着区域输变电设备的运行安全。在详细调研新疆风害地区750kV变电站构架避雷针变形倾倒事故的基础上,分析了风害区域构架设备变形的原因:1)涡激振动导致避雷针的法兰螺栓断裂或者松动;2)避雷针的法兰焊接质量不合格,风力作用导致局部应力集中,从而产生局部裂纹;3)设备应力集中断裂为疲劳断裂,后期发展为脆性断裂。根据这些分析结果,提出了构架避雷针的抗风措施。
In northwest regions of China, severe regional transmission and transformation equipment. frame lightning rod in 750 kV substation in the deformation of the frame lightning rod in the wind storm brings the threat to the safety operation of Based on deformation accident site conditions of Wind Damage Areas, this paper analyzed the damage areas. The reasons include that fracture or looseness of lightning rod flange bolts is caused by vortex-induced vibration, the wind induces vibration on welding disqualification of lightning rod flange brought about part of the fracture, and fatigue fracture, brittle fracture are produced increases later., According to the deformation analysis, the paper has proposed some corresponding countermeasures on wind resistance of the frame lightning rod.
出处
《电瓷避雷器》
CAS
北大核心
2017年第2期14-18,共5页
Insulators and Surge Arresters
基金
国网新疆电力公司科技项目(5230DK15009L)
国家高技术发展计划(863计划)(2013AA030701)
关键词
风害区域
750
k
V变电站
构架避雷针
形变
现场分析
wind damage areas
750 kV substation
frame lightning rod
deformation
sandstorm
field analysis
作者简介
王建（1986-），男，高级工程师，从事输变电设备状态检测与评价技术研究。
