摘要
结合向家坝—上海±800 kV直流输电工程的实际,采用真型模拟塔对3种带电作业方式进行了试验研究,计算分析了作业人员进出电场过程中,需要的各种最小安全间隙距离,同时校核了危险率。结果表明:作业人员乘绝缘斗从导线下方向上吊入高电位区进入等电位的方式相对比较安全,其次是从塔身位置水平摆入高电位区进入等电位的方式:乘绝缘斗从导线上方向下吊入高电位区进入等电位的方式需要间隙距离较大,因此不建议采取这种作业方式。
In light of the practice of the Xiangjiaba-Shanghai ±800 kV UHV DC transmission line project, 3 types of live-line operation were carried out on the simulating tower, various minimum safety distances were calculated and analyzed when the worker access to electric field. The results show that the safest way is that the worker enters the equipotential area from the earth in vertical direction under the line, the second is that the worker enters the equipotential area from tower body in horizon direction. The way that worker enters equipotential area from cross beam in vertical direction needs the maximum safety distance, so this way is not suggested.
出处
《电力建设》
2009年第7期7-12,共6页
Electric Power Construction
基金
国家电网公司科技项目(SGkJ[2007]171)
