Effects of transmission line tower grounding improvements on its lightning performance

被引：0
|
作者：
Diaz, Luis [1 ]
Grange, Francois [2 ]
Journet, Sebastien [2 ]
Dawalibi, Farid [3 ]
机构：
[1] RTE France, Natl Grid Expertise Ctr, La Def, France
[2] SES Europe, Vienne, France
[3] Safe Engn Serv & Technol, Laval, PQ, Canada
来源：
2021 35TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) AND XVI INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (SIPDA) | 2021年
关键词：
tower grounding; transient response; lightning; back-flashover;
D O I：
10.1109/ICLPANDSIPDA54065.2021.9627425
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：
Improvement of transmission line tower grounding is of particular importance for the line service quality. The tower transient impedance is a key parameter for the prediction and estimation of transmission line performance under abnormal conditions including lightning strikes. In this paper we compare the impulse impedance to the low frequency resistance of the tower by evaluating their respective effects on back-flashovers estimation. Based on real-case scenarios of grounding system configurations the critical current is computed and analysed to estimate the gain in the tower-footing grounding system design.
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页数：6
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