输电线路雷电过电压的影响因素分析  

Analysis of Influencing Factors of Lightning Overvoltage on Transmission Lines

作　　者：樊长海 FAN Changhai(Nanning Bureau,EHV Transmission Company of China Southern Power Grid Co.,Ltd.,Nanning 530021,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司南宁局,广西南宁530021

出　　处：《电工技术》2023年第10期172-174,178,共4页Electric Engineering

摘　　要：随着我国工业水平的不断进步,整体的经济水平全面提升。在电力系统中超高压电网相关的技术水平也随之不断改进和提升,尤其是目前我国供电行业的超高压输电线路的传输距离、高度等都在全面提升。近几年,同塔双回输电技术在国内得到了广泛的应用,其总体设计、制造、施工等方面都比较成熟。然而,当前在电力传输过程中,由于雷击引起的电力系统故障仍时有发生,因此有关方面的专家必须对雷击过电压的瞬变特性、输电线路的抗雷性等问题进行深入的研究。同时,采用计算机仿真软件,对电网中的雷电过电压的影响因素进行了科学的分析,并采用合理的模拟方法,探讨了相应的规律,从而对以后的输电线路的防雷设计具有十分重要的参考意义。With the continuous progress of China′s industrial level,the overall economic level has been comprehensively improved.The technical level related to the ultra-high voltage power grid in the power system has also been continuously improved and upgraded,especially the transmission distance and height of the ultra-high voltage transmission line in China′s power supply industry are being comprehensively improved.In recent years,the double-loop transmission technology of the same tower has been widely used in China,and its overall design,manufacturing,construction and other aspects are relatively mature.However,in the current power transmission process,power system failures caused by lightning strikes still occur from time to time.Therefore,experts in relevant fields must conduct in-depth research on the transient characteristics of lightning overvoltage and the lightning resistance of transmission lines.Computer simulation software was used to scientifically analyze the influencing factors of lightning overvoltage in the power grid.A reasonable simulation method was adopted,and the corresponding law was discussed,which had a very important reference significance for the lightning protection design of transmission lines in the future.

关 键 词：电力系统 超高压电网 输电线路 耐雷性能 防雷设计 

分 类 号：TM863[电气工程—高电压与绝缘技术]