不同故障条件下500 kV金属氧化锌避雷器温度分布特性  

Calculation of Temperature Distribution Characteristics of 500 kV Metal Zinc Oxide Arrester under Different Fault Conditions

作　　者：黎鹏 屈莹莹 方蓓贝 王宇 吴田[1,2] 普子恒 LI Peng;QU Ying-ying;FANG Bei-bei;WANG Yu;WU Tian;PU Zi-heng(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;Hubei Transmission Line Engineering Technology Research Center,Yichang 443002,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;Wuhan NARI Limited Company,State Grid Electric Power Research Institute,Wuhan 430074,China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention,Wuhan 430074,China)

机构地区：[1]三峡大学电气与新能源学院,宜昌443002 [2]湖北省输电线路工程技术研究中心,宜昌443002 [3]南瑞集团有限公司(国网电力科学研究院有限公司),南京211106 [4]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [5]电网雷击风险预防湖北省重点实验室,武汉430074

出　　处：《科学技术与工程》2021年第9期3649-3655,共7页Science Technology and Engineering

基　　金：国家电网公司总部科技项目(524625180018);三峡大学学位论文培优基金(2020SSPY056)。

摘　　要：为研究不同故障下金属氧化物避雷器(metal oxide arrester, MOA)的温度分布特性,建立了500 kV变电站用MOA温升电-热耦合计算模型,分析了避雷器不同区域受潮、短路时的温度分布。仿真结果表明,避雷器受潮时,受潮区域的温升较大;随着受潮区域的增加,避雷器的最大温升和表面温升较大的法兰数量明显增加;避雷器不同区域短路时,温升较小。通过红外检测技术,可识别出部分轻度受潮故障和全部重度受潮故障,但无法对单节短路失效故障进行检测。根据MOA表面的最大温升和法兰的发热特征,可区分受潮故障的发生部位。In order to study the temperature distribution characteristics of metal oxide arrester(MOA)under different faults,the electricity-thermal coupling calculation model of temperature rise for 500 kV substation MOA was established.The temperature distribution when the arrester was damp and short circuit in different areas was analyzed.The simulation results show that when the arrester is damp,the temperature rise in the damp zone is higher,and the maximum temperature rise of the arrester and the number of flanges with large surface temperature rise are increased obviously when damp areas are increased.When there is a short circuit in different areas of the arrester,the temperature rise is small.Through infrared detection technology,some mild damping faults and all severe damping faults can be detected,but the short-circuit failure faults of the single arrester cannot be detected.According to the maximum surface temperature rise of the MOA and the heating characteristics of the flanges,the location of the damp fault can be distinguished.

关 键 词：金属氧化物避雷器(MOA) 温度分布 受潮 短路 红外检测 

分 类 号：TM854[电气工程—高电压与绝缘技术]