INFLUENCE OF GROUNDING RESISTANCE ON EFFECTIVENESS OF LIGHTNING PROTECTION FOR POWER DISTRIBUTION LINES WITH SURGE ARRESTERS

被引:0
|
作者
Takahashi, Akihisa [1 ]
Furukawa, Seiji [1 ]
Ishimoto, Kazuyuki [1 ]
Asakawa, Akira [1 ]
Hidaka, Tetsuya [2 ]
机构
[1] CRIEPI, Tokyo, Japan
[2] Chugoku Elect Power Co Inc, Hiroshima, Japan
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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
We clarified the influence of grounding resistance on the effectiveness of lightning protection for power distribution lines with a ground wire (GW) and surge arresters (SAs) by EMTP analysis and experiments. The results indicated that power distribution lines with both a GW and SAs can increase the lightning protection level against direct hits without lowering the grounding resistance compared with using only SAs. A cost reduction and the improvement of the electric supply reliability can be expected by exchanging part of the grounding cost with the installation of a lot of lightning protection devices on power distribution lines.
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页数:6
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