电瓷避雷器Issue(4)：71-81,11.DOI:10.16188/j.isa.1003-8337.2023.04.009
多重雷击下10 kV架空线路氧化锌避雷器的保护特性
Protection Characteristics of Zinc Oxide Arresterfor 10 kV Overhead Line Under Multiple Lightning Strikes
摘要
Abstract
Multiple lightning strikes are the main form of lightning strikes in nature.Multiple lightning strikes will make zinc oxide arrester(MOA)more likely to exceed the energy threshold.The influence of multiple lightning strikes on power lines has been studied in recent years,but there is still a lack of re-search on the tolerance characteristics of distribution lines under induced lightning overvoltage under mul-tiple lightning strikes.The author summarizes the basic parameters of multiple lightning strikes,and cal-culates the maximum energy allowable value of(YH)HY5WS-17/50 MOA commonly used in distribu-tion lines,which is used as a criterion for MOA damage.The lightning overvoltage simulation model of 10 kV overhead line is built,and the induced lightning simulation waveform of multiple lightning strikes is constructed.Based on the two common lightning strike forms of induction lightning and lightning con-ductor in 10 kV overhead lines,the influence of multiple lightning strikes on the energy absorption of MO A in 10 kV overhead lines is studied,and compared with the lightning withstand level under single lightning strike.At the same time,the energy absorption changes of MOA in three ways of whole line in-stallation,tower installation and fixed point installation are studied.The results show that under the typi-cal setting of 10 kV overhead lines,the energy absorbed by MOA under multiple lightning strokes can be up to twice that under single lightning stroke.The lightning withstand level of MOA tower installation is higher than that of the whole line installation;the absorption energy of MOA is lower than that of the whole line installation under the isolation tower installation mode,which is more obvious under multiple lightning strikes.Therefore,it is recommended to install MOA in distribution lines.关键词
多重雷击/ATP-EMTP/氧化锌避雷器/10kV架空线路/通流能量/耐雷水平Key words
multiple lightning strikes/ATP-EMTP/zinc oxide arrester/10 kV overhead lines/discharge energy/lightning withstand level引用本文复制引用
周秀,田天,白金,罗艳,司文荣,杨海涛,吴文锋,杨鑫..多重雷击下10 kV架空线路氧化锌避雷器的保护特性[J].电瓷避雷器,2024,(4):71-81,11.基金项目
国家自然科学基金面上项目(编号:52177015).Project supported by The General Program of National Natural Science Foundation of China(No.52177015). （编号:52177015）
