Influence of Different Coupling Ground Wire Erecting Mode on Lightning Withstand Performance for Multi-circuit Transmission Line in a Tower

被引：0
|
作者：
Zhao Yuan [1 ]
Su Jie [2 ]
Gu Shangqiang [2 ]
Ren Hua [2 ]
Zhao Chun [2 ]
机构：
[1] Liabil Co, North China Elect Power Res Inst Ltd, Div High Voltage Technol, Beijing, Peoples R China
[2] State Grid Elect Power Res Inst, WuHan NARI Ltd Liabil Co, Div Lightning Protect Technol, Wuhan, Hubei Province, Peoples R China
来源：
2014 INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) | 2014年
关键词：
component; coupling grounding wire(CGW); multi-circuit transmission line in a Tower(MCTLT); EMTP; lightning protection performance(LPP); trip-out rate;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Considering that multi-circuit transmission line in a tower has a smaller occupied area and a larger transmission capacity, it has become very important for electric power transmission. Nowadays transmission lines put into operation at home and abroad mostly are multi-circuit transmission line in a tower, which can increase the risk of simultaneous lightning strike-back outage. Mounting coupling ground wire(CGW) can enhance the strike-back lightning-withstand level of transmission line effectively, especially when the soil under tower has a great electrical resistivity so it's difficulty to lower the grounding resistance, advantages of CGW will be more notable. A lightning strike model of double-circuit transmission line in a tower with different CGW mounting height is modeled based on EMTP in this paper, and transmission line's lightning-withstand levels with different CGW mounting height are analyzed, then by their effects being compared, the optimum CGW mounting method is given, which can contribute scientific basis and reasonable suggestion to transmission line lightning protection.
引用
收藏
页码：1036 / 1040
页数：5
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