Technical Economic Analysis of Design Methods of Subtransmission Line Grounding Systems

被引:0
作者
Canever, Giovanna de Lorenzi [1 ]
Piantini, Alexandre [1 ]
Magnus, Douglas de Matos [2 ]
Coelho, Vilson Luiz [2 ]
机构
[1] Univ Sao Paulo, Inst Energy & Environm, Lightning & High Voltage Res Grp CENDAT, Sao Paulo, Brazil
[2] FASATC Fac SATC, Criciuma, Brazil
来源
2017 INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (XIV SIPDA) | 2017年
关键词
subtransmission lines; lightning performance; grounding; technical and economic study; ELECTRODES;
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
This paper presents a study of the lightning performance of subtransmission lines located in high ground flash density areas according to the design of the grounding systems. Analysis of the behavior of 69 kV and 138 kV lines under direct lightning strokes is performed for grounding systems dimensioned based on a fixed value of the low frequency resistance established by Brazilian regulations, and considering the effective length. A technical and economic analysis of both a hypothetical and a real line profile located in a high ground flash density area showed that designing the grounding configuration according to the effective length is more effective to guarantee a minimum line outage rate due to lightning strokes considering the difference between the installation and the faults costs.
引用
收藏
页码:308 / 314
页数:7
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