On the Influence of Multigrounded Conductors on the Performance of Compact Distribution Lines Against Nearby Lightning Strikes

被引：0
|
作者：
Lima, Larissa L. P. [1 ]
De Conti, Alberto [2 ]
Leal, Osis E. S. [3 ]
机构：
[1] UFMG Fed Univ Minas Gerais, PPGEE Grad Program Elect Engn, Belo Horizonte, MG, Brazil
[2] UFMG Fed Univ Minas Gerais, Lightning Res Ctr, DEE LRC Dept Elect Engn, Belo Horizonte, MG, Brazil
[3] UTFPR Fed Univ Technol Parana, DEE Dept Elect Engn, Pato Branco, Brazil
来源：
2022 36TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP 2022) | 2022年
关键词：
Compact distribution lines; lightning-induced voltages; transient analysis; multigrounded conductors; IMPULSE BREAKDOWN BEHAVIOR; INDUCED VOLTAGES; COVERED CABLES; SHIELD WIRES; FIELD;
D O I：
10.1109/ICLP56858.2022.9942555
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 is dedicated to investigate the impact of two multigrounded conductors on the performance of a three-phase compact distribution line against lightning-induced voltages. The natural presence of a multigrounded messenger cable in close proximity with the phase conductors, combined with the use of a periodically-grounded neutral required in multigrounded distribution systems, is shown to reduce the voltages induced across the line insulators compared to the case in which the neutral is absent. It is also shown that the phase-to-messenger voltages increase with the reduction of both the grounding intervals and the values of grounding resistance. Finally, it is confirmed that it is possible to neglect the presence of the insulating layer covering the phase conductors in lightning-induced voltage calculations considering multigrounded conductors.
引用
收藏
页码：122 / 127
页数：6
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