摘要
500 kV渔兴Ⅰ、Ⅱ回荆州段为紧凑型双回线路,2008年元月中旬因受暴雪突袭有严重覆冰现象,荆州至潜江一带约50 km长度还发生了严重的舞动,最终导致线路停电,经巡视检查发现多处险情,除明显的引流线发生不规则断损或耐张塔大量螺栓和联板脱落外,还有多个耐张塔横担主材在主要连接处发生断裂,最具代表性的是412号和420号耐张塔,情况十分危急,湖北省输变电工程公司紧急采取果断措施,结合现场的实际情况,制定特殊技术方案,对铁塔受损进行了抢险处理。
Yuxing Ⅰ and Ⅱ 500 kV transmission lines at Jingzhou section are compact type double lines. On middle of Jannuary 2008, due to furious snowing, there was severe ice accretion. From Jingzhou to Qianjiang,about 50 km long, a serious gallop happened, and resulted in outage of the lines. By surveying, many dangerous situations were found. The apparent leads were irregularly broken, many bolts and gusset plates of the tension towers were dropped,and many tension towers crossarm main materials at main joints points were broken. The No. 412 and No. 410 tension towers were typical to do emergency rescue construction. According to the spot pratical situation,the special technical scheme was made.
出处
《湖北电力》
2008年第2期49-51,共3页
Hubei Electric Power
关键词
输电线路
超高压
覆冰
舞动
抢险
transmission line
EHV
ice accretion
gallop
emergency rescue
