Flashover Characteristics along the Insulator in SF6 Gas under DC Voltage

被引：0
|
作者：
Jia, Zhijie [1 ]
Zhang, Bin [1 ]
Tan, Xiaoya [1 ]
Zhang, Qiaogen [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China
来源：
2009 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC), VOLS 1-7 | 2009年
关键词：
flashover voltage; surface charge accumulation; surface conductivity; electric field distribution; geometry;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In order to promote the flexibility about the selection of transmission corridor, DC gas-insulated transmission line (GIL) can be utilized to substitute part of the overhead line. One of the key factors that greatly threaten insulation level of GIL is the accumulation of surface charges along the supporting insulators under DC voltage. In this paper, the sphere-plane electrode system has been established to simulate the field distribution of the coaxial cylinder configuration in GIL. The effect of the insulator's material and geometry on the insulator's flashover characteristics under DC voltage in SF6 gas has been investigated. Results show that the insulator's surface conductivity has great influence on the surface charge accumulation as well as the flashover along the insulator in DC GIL.
引用
收藏
页码：3409 / 3412
页数：4
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