CAJ | 학술논문

对同塔多回线路采取不同雷击防护措施状况下的耐雷性能进行仿真分析，研究各种防雷措施的配置方式及效果。针对宁波电网典型220 kV 线路防雷运行现状，评估了雷击闪络风险等级大小。根据现有各种防雷措施的特点以及在220 kV 线路上的适用性和可行性，结合不同措施的防雷效果和综合应用效果，制定了220 kV 晓洲晓昌线路的差异化防雷改造方案。结果表明，220 kV 晓洲晓昌线路全长37．34 km，85基杆塔进行差异化防雷改造后，雷击跳闸率同比下降82．66％，每年雷击导致同跳的次数为0．011次，防雷改造取得了较好效果。
대동탑다회선로채취불동뢰격방호조시상황하적내뢰성능진행방진분석，연구각충방뢰조시적배치방식급효과。침대저파전망전형220 kV 선로방뢰운행현상，평고료뢰격섬락풍험등급대소。근거현유각충방뢰조시적특점이급재220 kV 선로상적괄용성화가행성，결합불동조시적방뢰효과화종합응용효과，제정료220 kV 효주효창선로적차이화방뢰개조방안。결과표명，220 kV 효주효창선로전장37．34 km，85기간탑진행차이화방뢰개조후，뢰격도갑솔동비하강82．66％，매년뢰격도치동도적차수위0．011차，방뢰개조취득료교호효과。
This paper simulate and calculate several measures of preventing lighting trip of multi-circuit trans-mission lines at the same tower to evaluate the configuration mode and the effect of these lightning protection measures.On account of actual operation status for lightning protection of Ningbo typical 220 kV multi-circuit transmission lines named Xiao Zhou and Xiao Chang line,their level of risk of lightning flashover size are as-sessed.According to the characteristics of the existing various kinds of lightning protection measures ,with the applicability and feasibility on the typical lines,combining the reality of different measures of lightning protec-tion effect,the differentiation of the typical line lightning protection measures are made.The research results show that the lightning tripout rate fell 82.66% and the times of simultaneously tripout reduced to 0.011 a year after the lightning protection measures are used for all the 37.34 km line ,and 85-base towers of 220 kV Xiao Zhou and Xiao Chang line.Lightning protection reform has obtained the good effect.