±500kV葛南直流输电设备外绝缘运行概况及分析  

OPERATION AND ANALYSIS OF EXTERNAL INSULATION OF ±500 kV GE NAN TRANSMISSION EQUIPMENTS

作　　者：宿志一[1] 

机构地区：[1]中国电力科学研究院,北京100085

出　　处：《电网技术》2001年第2期57-60,共4页Power System Technology

摘　　要：长期以来 ,葛南直流换流站和线路在污闪季节处于 40 0k V以下运行 ,且运行时间仅 5 0 % ,但换流站直流设备闪络频繁 ,线路污闪行波保护动作率超过 0 .1/ (10 0 km.a)。这表明 ,国内还缺少直流外绝缘的设计经验。为此 ,强调葛南线进行冬季全压运行试验的必要性和紧迫性。Up to now although in the pollution flashover season the Ge Nan DC converter station and relevant transmission lines operate with the voltage less than 400 kV and the operation time is50%, however, thetripping rate of the transmission line is more than 0.1/100 km·year. This factindicates that the insulationdesigners in China are short of theexperiences indesigning the externalinsulationfor DC devices. Therefore, it is emphasized that to carry out the full voltage test of Ge Nan DC transmission line in winter is necessary and urgent.

关 键 词：直流输电设备 外绝缘 绝缘子 换流站 

分 类 号：TM853[电气工程—高电压与绝缘技术]