中国电机工程学报2012，Vol.32Issue(10)：168-176,9.
高海拔220kV输电线路绝缘子串与并联间隙雷电冲击绝缘配合研究
Lightning Insulating Co-ordination Between Insulator String and Parallel Gap Device of 220 kV Transmission Line at high altitude area
摘要
Abstract
The operating experience shows that the parallel gap device （PGD） can effectively reduce the insulator damage caused by the lightning strike. However, the insulating co-ordination research between the insulator and the parallel gap device at high altitude areas is still inadequate. For this reason, the standard negative lightning flashover characteristics and voltage-time （V-t） characteristics experiments on a 220 kV composite insulator, a 220kV porcelain insulator string and their parallel gap devices were carried out in the National Engineering Laboratory （Kunming） for UHV Engineering Technology. Based on the test results, the flashover and V-t characteristics effect of PGDs on different insulators were analyzed. By combining the insulating co-ordination regulation with arc paths, the optimal distances for PGDs protection of the insulator strings were obtained. The result indicates that, the electric-field distribution of insulator affects the lightning flashover characteristics of PGDs; the recommended PGDs have excellent protective function to insulator strings.关键词
绝缘子串/并联间隙/伏秒特性/绝缘配合Key words
insulator string/parallel gap device (PGD)/voltage-time characteristics/insulating co-ordination分类
信息技术与安全科学引用本文复制引用
司马文霞,叶轩,谭威,杨庆,罗兵,李立浧,高超..高海拔220kV输电线路绝缘子串与并联间隙雷电冲击绝缘配合研究[J].中国电机工程学报,2012,32(10):168-176,9.基金项目
重庆市科委自然科学基金计划面上项目（CSTC2011BB6065）. （）
