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

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    220 kV同塔雙回線路感應電壓電流影響因素敏感性分析

    來源:電工電氣發布時間:2019-11-19 13:19 瀏覽次數:553
    220 kV同塔雙回線路感應電壓電流影響因素敏感性分析
     
    吳倩1,2,薄鑫1,2,吳楊勇3,王庭華1,2,李辰1
    (1 國網江蘇省電力有限公司經濟技術研究院,江蘇 南京 210008;
    2 國網江蘇電力設計咨詢有限公司,江蘇 南京 210008;
    3 國網安徽省電力有限公司祁門縣供電公司,安徽 黃山 245600)
     
        摘 要:由于電磁感應和靜電耦合作用,同塔雙回正常運行線路會在檢修線路上產生感應電壓、電流?;贓MTP/EMTPE電磁暫態仿真平臺,對桿塔線路布置方式、線路長度、運行線路傳輸功率和工作電壓等,開展同塔雙回線路感應電壓、電流的主要影響因素敏感性分析,提煉關鍵敏感因素及敏感程度。通過挖掘220 kV同塔雙回線路感應電壓、電流的基本規律,對220 kV出線接地開關選型提出指導性建議,提高選型效率與準確性,為220 kV輸電線路的檢修提供技術參考。
        關鍵詞:同塔雙回;感應電壓;感應電流;接地開關;敏感性分析
        中圖分類號:TM755     文獻標識碼:A     文章編號:1007-3175(2019)11-0011-06
     
    Sensitivity Analysis on Influence Factors of Induced Voltage and Current of 220 kV
    Double-Circuit Transmission Lines on the Same Tower
     
    WU Qian1,2, BO Xin1,2, WU Yang-yong3, WANG Ting-hua1,2, LI Chen1
    (1 Economic Research Institute of State Grid Jiangsu Electric Power Co., Ltd, Nanjing 210008, China;
    2 State Grid Jiangsu Electric Power Design Consulting Institute Co., Ltd, Nanjing 210008, China;
    3 Qimen County Electric Power Supply Company of State Grid Anhui Electric Power Co., Ltd, Huangshan 245600, China)
     
        Abstract: Due to the electromagnetic induction and electrostatic coupling effect, when outage occurs in one of the 220 kV double circuits on the same tower, induced current and voltage will be generated in another circuit. Based on EMTP/EMTPE electromagnetic transient simulation platform, this paper carried out sensitivity analysis for those main factors of double circuits on the same tower, including arrangement form of circuits on the tower, length of double circuits on the same tower, transmission power and voltage of the running line, which impacted on the induced current and voltage, and the key sensitive factors and sensitivity degree were extracted. By excavating the basic law of induced voltage and current of 220 kV double-circuit transmission lines on the same tower, this paper puts forward the valuable proposal guiding the selection of 220 kV line earthing switches to improve the efficiency and accuracy of selection of earthing switches, which provides technical reference for 220 kV transmission line maintenance.
        Key words: double circuits on the same tower; induced voltage; induced current; earthing switch; sensitivity analysis
     
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