电瓷避雷器Issue(1)：50-60,11.DOI:10.16188/j.isa.1003-8337.2025.01.007
多间隙避雷器截波特性对雷电侵入波过电压的影响
Influence of Multi Gap Arrester Chopping Characteristics on Lightning Intrusion Wave Overvoltage
摘要
Abstract
Lightning protection near the fan is the key point of wind farm lightning protection,which af-fects the safe and effective delivery of wind power resources.At present,the three-phase multi gap ar-rester installed on a base tower behind the collector can cooperate with the zinc oxide arrester to reduce the system failure caused by the arrester failure.However,the chopped wave generated by the multi gap arrester when it acts is transmitted to the fan box transformer along the line,which may threaten the insu-lation of the transformer winding.Based on the above problems,the author builds a simulation model on ATP to analyze the impact of wave clipping of multi gap arrester on the insulation of fan transformer wind-ings,by considering the conventional installation mode and the limit installation mode of multi gap arrest-er,and calculates that the wave clipping over-voltage generated by multi gap arrester after being struck by lightning in two cases is the impact on the insulation of fan transformer.Through the simulation analy-sis,it is found that the higher the amplitude of the lightning current,the larger the amplitude of the over-voltage generated by the truncated wave,the steeper the wave head,and the greater the threat to the in-sulation of the fan box.The damage degree of round lightning is less than that of counter lightning;When a multi-gap arrester is installed in a collector tower,the 100 kA lightning current may destroy the insu-lation of the fan box transformer winding and require additional protective measures.It is recommended that the multi-gap arrester be installed from the next pole tower of the collector tower in the wind farm.关键词
多间隙避雷器/雷电侵入波/截波过电压/绝缘配合Key words
multi gap arrester/lightning intrusion/chopping overvoltage/insulation coordination引用本文复制引用
潘才维,邓冶强,王羽,吴强,黄伟翔,林秀清,黎大健,张龙飞..多间隙避雷器截波特性对雷电侵入波过电压的影响[J].电瓷避雷器,2025,(1):50-60,11.基金项目
广西电网有限责任公司科技项目"配电线路雷害风险评估系统研发及防雷技术有效性研究"(编号:GXKJXM20220125) （编号:GXKJXM20220125）
广西科技基地与人才专项"与李立浧院士专家合作开展面向智能台区的过电压防护装置研发"(编号:桂科AD22080006).Project supported by Science and Technology Project of Guangxi Power Grid Co.,Ltd.(No.GXKJXM20220125) （编号:桂科AD22080006）
Guangxi Science and Technology Base and Talent Special Project"Collaborating with Academician Li Liyun and Experts to Develop Overvoltage Protec-tion Devices for Intelligent Stations"(No.Guike AD22080006). （No.Guike AD22080006）
