基于层次分析法的±500kV直流输电线路带电作业安全评价  

AHP-based Safety Evaluation for Live Working on 500 kV DC Transmission Line

作　　者：刘仕奇 LIU Shiqi(State Grid Xiangxi Power Supply Company,Hunan Xiangxi Tujia and Miao Autonomous Prefecture,Hunan Jishou 416000,China)

机构地区：[1]国网湘西供电公司,湖南吉首416000

出　　处：《电工材料》2023年第1期60-63,共4页Electrical Engineering Materials

摘　　要：为了评估在两种±500 kV输电线路上开展带电作业的安全性,针对带电作业中的各种威胁因素,以体表电场值与组合间隙距离作为主要判断指标,计算在两种±500 kV线路进行带电作业时,典型工况下的体表电场与间隙距离。结合层次分析法,构建了安全性层次分析模型,综合评估了两种±500kV同塔线路带电作业安全性。结果表明:在有回流线的±500 kV同塔双回线路进行带电作业时安全性较无回流线的双回线路高,该研究为±500 kV直流输电线路带电作业安全评价提供了参考。In order to evaluate the safety of live working on two ±500 kV DC transmission lines, the various risk factors on the charged assignment to surface electric field value and combined gap distance as the main judge index, calculation on the two types of lines, when charged, the typical working conditions of surface electric field and clearance distance, combined with the analytic hierarchy process(AHP),constructed the safety hierarchical analysis model, the safety of live operation of two kinds of lines in the same tower is evaluated comprehensively. The results show that the safety of ±500 kV double circuit with same tower with backflow line is higher than that of double circuit without backflow line during live operation. This study provides a reference for the safety evaluation of ±500 kV DC transmission line in live operation.

关 键 词：±500 kV直流 层次分析法 体表电场 组合间隙 带电作业 

分 类 号：TM755[电气工程—电力系统及自动化]