摘要
输电线路雷电防护主要依据电气几何模型-保护角法进行设计,是用一次放电(单脉冲)、多次重复实验统计得出。雷击放电包含多个脉冲,单脉冲放电不能完全反映雷电多脉冲放电的物理过程。文中采用CIGRE授权出版的《雷电参数的工程应用》中的观测数据,给出了雷电放电的5个阶段及主要物理参数,同时就避雷针与雷电拦截器对雷电的接闪过程物理参数进行计算。最后,比较分析现有高压输电线路防雷技术的特点和局限性,提出了雷电拦截新技术的应用方法。
The lightning protection of transmission line is designed mainly based on electrical geometric model-protection angle method,and it is obtained by the statistics of a discharge(one pulse)and many repeated experiments.Single lightning discharge contains multiple pulses,and single pulse discharge can not truly reflect the physical process of lightning multi-pulse discharge.Five stages of lightning discharge and main physical parameters are given according to the observation data in"Lightning Parameters for Engineering Applications"authorized by CIGRE,and meanwhile,the physical parameters of tower lightning rod and lightning interceptor against lightning are calculated.Finally,the characteristics and limitations of the existing lightning protection technologies for high-voltage transmission line are compared and analyzed,and a new application method of lightning interception technology is proposed.
作者
宋海东
杨晖
钟驰宇
李默林
周茹萍
黄昱
张榆
李建明
SONG Haidong;YANG Hui;ZHONG Chiyu;LI Molin;ZHOU Ruping;HUANG Yu;ZHANG Yu;LI Jianming(Sichuan Yanyuan Huadian New Energy Co.,Ltd.,Liangshan 615000,Sichuan,China;GuangzhouMeteorological Bureau,Guangzhou 510530,Guangdong,China;Chengdu College,University ofElectronic Science and Technology of China,Chengdu 611731,Sichuan,China;MeteorologicalBureau of Shunde District,Foshan 528399,Guangdong,China;Jindun Lightning ProtectionTechnology Development Co.,Ltd.,Foshan 528308,Guangdong,China;State Grid SichuanElectric Power Research Institute,Chengdu 610041,Sichuan,China)
出处
《四川电力技术》
2022年第6期68-72,共5页
Sichuan Electric Power Technology
基金
华电集团有限公司科技项目(高海拔山地风电场雷波侵入波监测及抑制装置技术研究,17JLC202100265)。
关键词
高压送电线路
多脉冲放电
铁塔避雷针
雷电拦截新方法
high-voltage transmission line
multi-pulse discharge
tower lightning rod
new lightning interception method
