中国电力 ›› 2013, Vol. 46 ›› Issue (3): 24-29.DOI: 10.11930/j.issn.1004-9649.2013.3.24.5

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1 000 kV双回路多根地线防雷研究

王茂成1, 王晓涵2, 张波3, 张勇2   

  1. 1. 山东电力集团公司 烟台供电公司,山东 烟台 264001;
    2. 济南大学 自动化与电气工程学院,山东 济南 250022;
    3. 山东大学 电气工程学院,山东 济南 250061
  • 收稿日期:2012-09-11 出版日期:2013-03-05 发布日期:2015-12-10
  • 作者简介:王茂成(1964—),男,山东蓬莱人,高级工程师,从事110~1 000 kV输变电技术研究。E-mail: ytwmc99@163.com
  • 基金资助:
    2013年山东电力集团公司重点科技项目(06KJ030101C2029720130000)

Study on Lightning Protection by Multi-band Grounding Wires for 1 000-kVDouble-Circuit Lines

WANG Mao-cheng1, WANG Xiao-han2, ZHANG Bo3, ZHANG Yong2   

  1. 1. Yantai Electric Company of Shandong Electric Power Group, Yantai 264001, China;
    2. Automation and Electrical Engineering School of Jinan University, Jinan 250022, China;
    3. Electrical Engineering School of Shandong University, Jinan 250061, China
  • Received:2012-09-11 Online:2013-03-05 Published:2015-12-10

摘要: 为了使特高压双回输电线路更加安全可靠地运行,以国内某1 000 kV交流输电线路工程SZC301型双回直线塔和SJC301型双回耐张塔为研究对象,提出了相邻耐张塔如何与双回直线塔多根地线配合的方案,综合分析了双回直线塔关于I型悬垂串和V型悬垂串的不同排列组合对导线与多根地线间距的影响。双回直线塔中层横担改挂V型悬垂串,下层横担加挂地线,可使塔头处中、下相外侧子导线的静态防雷保护角较常规分别减少11°和15°,上、中、下相外侧子导线动态防雷保护角分别为-11°、-20°和-9°,有效地减少了山区的地形坡度对绕击率的影响。

关键词: 1 000 kV, 双回直线塔, 双回耐张塔, I型悬垂串, V形串, 多根地线, 防雷

Abstract: In order to make the UHV double-circuit transmission lines run safer and more reliable, a scheme was proposed for neighboring tension tower’s coordination with multi-band grounding wires on double-circuit tangent tower by taking the SZC301 double-circuit tangent tower and SJC301 double-circuit tension tower of one domestic 1 000 kV AC transmission line project as a case study. The influence of different arrangement and combination of “I” string and“V” string of double-circuit tangent towers were synthetically analyzed on the interval between conductor and multi-band lightning wires. If the “V” string is hung up in the middle cross-arm on double-circuit tangent tower, and one lightning wire is hung up in the lower cross-arm, the static lightning protection shielding angle of the middle outer sub-conductor and lower outer sub-conductor on the tower head will be reduced by 11°and 15° respectively, and the dynamic lightning protection shielding angle of the three (upper, middle and lower)-phase outer sub-conductors are -11°and -20°and -9° respectively, which has effectively reduced the influence of the terrain slope on shielding failure rate.

Key words: 1 000 kV, double-circuit tangent tower, double-circuit tension tower, “I”, string, “V”, string, multi-band grounding wires, lightning protection

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