阳江110kV平闸甲乙线倒塔原因分析  

Cause Analysis on the Pylon Collapse Accident of 110kV Pinggang-Zhapo Line Ⅰ and Line Ⅱ in Yangjiang

作　　者：马庆增[1] 张春雷[1] 李鹏云[1] 

机构地区：[1]广东电网公司电力科学研究院,广州510600

出　　处：《南方电网技术》2009年第4期93-95,共3页Southern Power System Technology

摘　　要：采用断口宏观检查、金相检验、力学性能测试、化学成分分析、应力分析等对阳江平闸甲乙线倒塔原因进行了分析,结果表明:台风引起的荷载严重超过原设计荷载是造成阳江电网线路大范围倒塔的最主要原因,今后在设计时应考虑铁塔的风致动力响应,适当提高设计标准,以提高杆塔承受载荷的能力。Macroscopical fracture examination, mechanical property testing, chemical composition analysis and stress analysis are carried out to search the pylon collapse accident of 110 kV Pin-Zha Line Ⅰ and Line Ⅱ in Yangjiang. It is concluded that the main reason of the accident is the serious overload caused by typhoon, proposing that the design of the pylon should take the effect of wind vibration into account, and take higher design standards to improve the enduring capacity of pylons.

关 键 词：输电铁塔 倒塌 设计载荷 风致动力响应 

分 类 号：TM754[电气工程—电力系统及自动化]