COMPARISON OF DC ICING FLASHOVE PERFORMANCES FOR PRE-POLLUTED SHORT SAMPLES OF COMPOSITE INSULATORS WITH DIFFERENT CONFIGURATION IN HIGH ALTITUDE AREA

摘要：

DC icing flashover performance of seven types of pre-polluted short samples of composite insulators at low air pressure simulated by the multifunction artificial climate chamber was researched in this paper. The rationality of the minimum sample size of the improved U-type method used in the paper was proofed. The test results show that the relationship between DC icing flashover gradient and air pressure meets power function and the value of the exponent n describing the influence of air pressure is 0.397 to 0.711 for the 7 types of insulators. The influences of sheds configuration parameters, ice thickness, pollution and air pressure on icing flashover performance were analyzed. And the selection of sheds configuration of UHV DC composite insulators in high altitude was suggested.

作者: Jiang Xingliang Muhammad Tariq Nazir Chao Yafeng Chen Ling Bi Maoqiang Zhang Zhijin Sun Caixin

作者单位: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China

会议类型: 国际会议

会议名称: The 14th International Workshop on Atmospheric Icing of Structures(第十四届结构物大气覆冰国际研讨会 IWAIS 2011)

会议地点: 重庆

会议语种:英文

页码: 18

在线出版日期: 2011-05-08（万方平台首次上网日期，不代表论文的发表时间）