中国电力 ›› 2018, Vol. 51 ›› Issue (3): 49-53,61.DOI: 10.11930/j.issn.1004-9649.201606202

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±800 kV线路中导线耐张串荷载对弧垂、张力的影响

周贺, 黄健, 牛林华   

  1. 中国能源建设集团安徽省电力设计院有限公司, 安徽 合肥 230601
  • 收稿日期:2016-06-03 修回日期:2017-10-16 出版日期:2018-03-05 发布日期:2018-03-12
  • 作者简介:周贺(1982—),男,安徽砀山人,硕士,高级工程师,从事高压电力线路设计研究,E-mail: 121566066@qq.com。

Influence of Wire Tension Insulator String's Load to Conductor Sag and Tension in ±800 kV Transmission Line

ZHOU He, HUANG Jian, NIU Linhua   

  1. China Energy Engineering Group Anhui Electric Power Design Institute Co., Ltd., Hefei 230601, China
  • Received:2016-06-03 Revised:2017-10-16 Online:2018-03-05 Published:2018-03-12

摘要: 在±800 kV直流输电线路工程中,导线耐张串串长较长、串重较大,其荷载对连续档内的导线弧垂、张力的影响已不可被忽略。简述了±800 kV直流输电线路架线方式,利用力矩平衡原理,对连续档内导线耐张串荷载与导线弧垂、张力之间的关系进行计算和分析,结果表明,对于长连续档耐张段和“耐-直-耐”耐张段,耐张塔相邻档导线弧垂的计算公式和设计处理措施是行之有效的,并在实际工程中验证了该方法的正确性。

关键词: ±, 800 kV直流架空线路, 导线耐张串, 荷载, 弧垂, 张力

Abstract: In ±800 kV DC overhead transmission line project, the effect of wire tension insulator string's load to wire sag and tension cannot be ignored in the continuous span because the string is longer and heavier than those of low voltage level. The stringing methods of ±800 kV DC transmission line are described briefly. By using moment balance principle, the relationship among conductor load, conductor sag and tension in the continuous span is analyzed. In both long continuous span strain section and Tension-Tangent-Tension strain section, analysis results prove effectiveness of proposed calculation method and treatment measures of tension tower adjacent span's conductor sag. The result is also verified in engineering practice.

Key words: ±, 800 kV DC overhead transmission line, tension insulator string, load, conductor sag, conductor tension

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