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| 中重冰区架空输电线路地线选择的探讨和建议 |
| Discussion and suggestion on ground line selection of overhead transmission lines in medium/heavy icing areas |
| 投稿时间：2015-01-04 |
| DOI：10.13259/j.cnki.eri.2016.01.012 |
| 中文关键词: 地线 不平衡张力 过载能力 覆冰厚度 防振 |
| 英文关键词:ground line unbalanced tension overload capacity ice thickness anti-vibration |
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| 中文摘要: |
| 介绍了地线选择的原则.通过分析导线、地线不平衡张力杆塔受力情况发现,较短的地线金具应力调节能力差是严重覆冰中架空输电线路地线支架和地线受损的重要原因.通过对不同截面和强度的地线在不同覆冰情况下与导线的配合计算,以及对不同强度但相同截面地线的抗振分析,得出了在导线和塔头不变情况下增加地线截面和增加地线强度的可能性和优劣.最后得出,在中重冰区可以通过增加地线截面、增加设计覆冰、增加不均匀覆冰工况、提高地线钢丝强度等方式选择地线,并对实际输电线路设计中地线的选择提出了建议. |
| 英文摘要: |
| Principles of ground line selection were introduced.By analyzing the unbalanced tension of conductor and ground line in pole tower,bad regulation ability of short ground lines and fittings played an important role in the damage of ground line and its stand in overhead transmission lines.Anti-vibration analysis of ground line with different intensities and same cross section as well as calculation of conductor and icing ground line with different cross-section or intensities showed the possibilities and merits of increasing the cross-section and intensity of the ground line without changes of conductor and tower head.At last,it could be concluded that the ground line could be selected in medium/heavy icing areas by increasing cross section,adding design icing,adding uneven icing,increasing the intensity of ground line.Suggestions were provided for the design of actual transmission line. |
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