500kV交流瓷外套避雷器干弧距离的探讨  

Discussion on the Dry Arcing Distances of 500 kV A.C. Surge Arresters with Porcelain Housings

作　　者：车文俊[1] 杨力[1] 潘仰光[1] 宋继军[1] 孟祥利 姚玉锁 张晓星[2] 菅雅弘 

机构地区：[1]中国电力科学研究院,北京市100192 [2]廊坊电科院东芝避雷器有限公司,河北省廊坊市065001

出　　处：《电力设备》2008年第3期58-60,共3页Electrical Equipment

摘　　要：目前标准中并没有规定500kV交流瓷外套避雷器的干弧距离，其干弧距离由型式试验确定。专门试验结果表明，即使干弧距离为3．6m，500kV交流瓷外套避雷器的绝缘配合系数也远超于现行国家标准及IEC标准的规定。中国和日本大量500kV交流瓷外套避雷器的干弧距离为3、2—3．6m，其安全运行的实绩已充分说明上述结论的正确性。建议用户在招标文件和技术协议中，不必要求500kV交流瓷外套避雷器的干弧距离，没有实际意义。The dry arcing distance of 500 kV A.C. surge arresters with porcelain housings, which is determined by type test, is not define on the standardization. The special test shows that even the dry arcing distance is 3.6 m, the insulation coordination coefficient of 500 kV A.C. surge arresters with porcelain housings is much more the value of national and IEC standard. The dry arcing distances of 500 kV A.C, surge attesters in China and Japan with porcelain housings is between 3.2 m and 3.6 m, the actual performance of safe operation showed fully that above conclusion is correct. So there is no need to require the dry arcing distances of 500 kV A.C. surge arresters with porcelain housings in the bidding documents and technical protocol.

关 键 词：500 kV交流 瓷外套避雷器 干弧距离 

分 类 号：TM727.2[电气工程—电力系统及自动化]