500kV GIS变电站雷电侵入波过电压分析研究  

Analysis of Lightning Intrusion Over-Voltage of 500 kV GIS Substation

作　　者：冯汝明 车传强[1,2] 赵磊 武春华[3] 刘天宇 王慧君 赵俊 种佳丽[1,2] FENG Ru-ming;CHE Chuan-qiang;ZHAO Lei;WU Chun-hua;LIU Tian-yu;WANG Hui-jun;ZHAO Jun;CHONG Jia-li(Inner Mongolia Power Research Institute,Hohhot 010000,China;Inner Mongolia Autonomous Region High Voltage and Insulation Technology Enterprise Key Laboratory,Hohhot 010000,China;Inner Mongolia Huineng Human Resources Co.,Ltd,Hohhot 010000,China)

机构地区：[1]内蒙古电力科学研究院,内蒙古呼和浩特010000 [2]内蒙古自治区高电压与绝缘技术企业重点实验室,内蒙古呼和浩特010000 [3]内蒙古汇能人力资源有限责任公司,内蒙古呼和浩特010000

出　　处：《电工电气》2021年第8期29-34,共6页Electrotechnics Electric

摘　　要：500kV变电站在发生雷电侵入过电压时,雷电波将沿线路传入变电站,严重影响设备的绝缘水平。对金属氧化锌避雷器(MOA)的工作原理、特性以及建模进行了分析,以某500kV GIS变电站为对象,利用ATP-EMTP(电磁暂态程序)对雷击侵入波过电压进行了仿真研究。计算了变电站进线落雷时GIS内部断路器、隔离开关、电压互感器、电抗器及出线套管和变压器上的雷电过电压,比较了MOA在不同位置和运行方式下的雷电过电压,分析了MOA的防雷效果。结果表明,雷击于#2和#3杆塔时站内电气设备上的过电压幅值最高可达1689.3kV,通过合理位置加装MOA,过电压幅值降至625.2kV。When lightning intrusions into over-voltage in 500 kV substation,lightning waves will be transmitted to the substation along the line,which will seriously affect the insulation level of equipment.The operating principle,characteristics and modeling of metal zinc oxide arrester(MOA)were analyzed.Taking a 500 kV GIS substation as the object,the lightning wave over-voltage was simulated by ATP-EMTP(electromagnetic transient program).The lightning over-voltage on GIS circuit breaker,disconnecting switch,voltage transformer,reactor,outlet bushings and transformers when the incoming line of substation falls lightning is calculated.The lightning over-voltage of MOA in different position and operation mode is compared,and the lightning protection effect of MOA is analyzed.The results show that the maximum over-voltage amplitude on the electrical equipment in the station when lightning strikes#2 and#3 tower can reach 1689.3 kV,and the overvoltage amplitude can be reduced to 625.2 kV by installing MOA in the reasonable position.

关 键 词：GIS变电站 雷电侵入波过电压 金属氧化锌避雷器 

分 类 号：TM863[电气工程—高电压与绝缘技术]