金属氧化物避雷器在陡波下的试验与模型分析  

Analysis of Test and Model for Metal Oxide Arrester Under Steep-front Wave

作　　者：李志兵[1] 颜湘莲[1] 王浩[1] 贺子鸣[1] 李晓昂[2] 宋继军 

机构地区：[1]中国电力科学研究院,北京100192 [2]西安交通大学,西安710049 [3]中电装备东芝(廊坊)避雷器有限公司,廊坊065001

出　　处：《高电压技术》2012年第10期2698-2706,共9页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2011CB209405);国家电网公司科技项目([2011])~~

摘　　要：为研究金属氧化物避雷器(MOA)在特快速瞬态过电压(VFTO)陡波下的响应特性,设计制作了陡波电流源装置,并对MOA阀片进行了陡冲击电流波下的残压试验研究。结果表明VFTO下阀片残压较雷电残压增加20%左右。对现有的MOA陡波模型进行了概要总结,并分析了IEEE推荐模型和东芝提出模型的参数计算和适用范围。应用2种模型对252kV GIS试验回路中安装MOA的VFTO特性进行了初步仿真计算,初步结果表明模型参数的取值对计算结果有较大影响。因此MOA对VFTO的抑制作用需试验验证。In order to study the response of metal oxide arrester（MOA） under very fast transient overvoltages（VFTO）,a current source with steep-front wave was designed and manufactured,and the residual voltage of MOA valves under the steep-front impulse currents was tested.The results show that the residual voltage of MOA valve under VFTO is about 20% higher than that under lightning overvoltage.Furthermore,the existing MOA models under steep-front wave were summarized and the parameter calculation methods and the applicable situation of both the models proposed by the IEEE Group and Toshiba Corporation were analyzed.Then the characteristics of VFTO in the test circuit of 252 kV GIS with MOA were preliminarily simulated using two kinds of MOA models.The calculation results were remarkably affected by the values of model parameters.Therefore,the suppression effect of MOA on VFTO needs further experimental verification.

关 键 词：金属氧化物避雷器(MOA) 特快速瞬态过电压(VFTO) 陡波 伏安特性 避雷器陡波模型 气体绝缘开关(GIS) 

分 类 号：TM862[电气工程—高电压与绝缘技术]