某330kV高压输电线路风灾事故原因分析  

Analysis on Wind Disaster of a 330 kV High Voltage Transmission Line

作　　者：晁锐 

机构地区：[1]中国能源建设集团陕西省电力设计院有限公司,陕西西安710054

出　　处：《电力勘测设计》2016年第3期43-47,共5页Electric Power Survey & Design

摘　　要：受大风灾害影响,造成某330 k V高压输电线路7基铁塔倒塌、1基铁塔严重受损的事故。本文从杆塔的分布和利用、风速以及微地形微气象特点等方面分析了事故原因,认为本次事故主要是由稀遇大风引起,稀遇大风在微地形微气候段风速进一步增大,造成了铁塔的倾倒。此外,耐张段长度过长加剧了灾害。在事故分析的基础上,提出了线路修复的措施以及预防此类灾害的建议。A 330 kV high voltage transmission line was destroyed by wind hazard, with seven transmission towers collapsed and one tower damaged seriously. According to the analysis of the distribution and utilization of towers ,wind speed, micro topography and microclimate, the main reason of the disaster is the rare wind hazard, and the wind speed strengthened further in the microtopography, with the towers collapsed. In addition, it aggravated the degree of the disaster that the length of the strain section is too long. On this basis, the article puts forward the measures to deal with the disaster and prevent the similarity one.

关 键 词：输电线路 风灾 最大风速 极大风速 微地形 微气象 

分 类 号：P425[天文地球—大气科学及气象学]