Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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輸電線路參數對杆塔分流係數的影響研究

來源:電工電氣發布時間:2022-08-29 13:29 瀏覽次數:0

輸電線路參數對杆塔分流係數的影響研究

李牧軒1,丘文彪1,田中天2,嚴小敏2
(1 廣東電網有限責任公司梅州供電局,廣東 梅州 514000;
2 武漢三相電力科技有限公司,湖北 武漢 430070)
 
    摘 要:杆塔分流係數是決定輸電線路反擊耐雷水平的重要因素,輸電線路自身參數對杆塔分流係數的影響不可忽視。基於多波阻抗模型,利用 ATP-EMTP 軟件對不同接地電阻、杆塔呼高、線路檔距下的杆塔分流係數進行仿真分析,結果表明接地電阻與線路檔距對分流係數有明顯的影響,是在防雷計算中需要考慮的因素。
    關鍵詞: 輸電線路;杆塔分流係數;防雷;接地電阻
    中圖分類號:TM726 ;TM863     文獻標識碼:A     文章編號:1007-3175(2022)08-0027-04
 
Research on the Influence of Transmission Line Parameters on the
Shunted Coefficient of Tower Pole
 
LI Mu-xuan1, QIU Wen-biao1, TIAN Zhong-tian2, YAN Xiao-min2
(1 Meizhou Power Supply Bureau of Guangdong Power Grid Co., Ltd, Meizhou 514000, China;
2 Wuhan Sunshine Power Science & Technology Co., Ltd, Wuhan 430070, China)
 
    Abstract: The shunted coefficient of tower poles is a decisive factor in the lightning back-flashover of the transmission line, and the parameters of the transmission line have an assignable influence on the shunted coefficient of tower poles. Based on the multi-wave impedance model, this research employed the ATP-EMTP software to do the simulation analysis of the shunted coefficient of tower poles from various grounding resistance, nominal heights, and line span. The result shows grounding resistance and line span have to be considered in lighting protection calculation because they have obvious effects on the shunted coefficient.
    Key words: transmission line; shunted coefficient of tower pole; lightning protection; grounding resistance
 
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