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

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    并列運(yùn)行變壓器電壓比不一致時(shí)無功環(huán)流分析與計(jì)算

    來源:電工電氣發(fā)布時(shí)間:2023-07-27 13:27 瀏覽次數(shù):303

    并列運(yùn)行變壓器電壓比不一致時(shí)無功環(huán)流分析與計(jì)算

    郭超,石凱萌,馬錫良,高竣,邱煒,周波,蔡川,陳星宇,何凱
    (國網(wǎng)四川省電力公司成都供電公司,四川 成都 610000)
     
        摘 要:分析了變壓器電壓比不一致時(shí)無功環(huán)流產(chǎn)生的原因,針對三相三繞組變壓器兩繞組并列運(yùn)行和三繞組并列運(yùn)行的兩種情況,分別介紹了無功環(huán)流計(jì)算方法,并通過分析成都電網(wǎng)兩起并列運(yùn)行變壓器之間的無功環(huán)流異常案例,論證了計(jì)算方法的有效性,為后續(xù)各供電公司出現(xiàn)類似情況提供了經(jīng)驗(yàn)參考。
        關(guān)鍵詞: 變壓器;電壓比;無功環(huán)流
        中圖分類號:TM401. +1     文獻(xiàn)標(biāo)識碼:B     文章編號:1007-3175(2023)07-0027-06
     
    Analysis and Calculation of Reactive Circulating Current for Inconsistent
    Voltage Ratio of Parallel-Operation Transformers
     
    GUO Chao, SHI Kai-meng, MA Xi-liang, GAO Jun, QIU Wei, ZHOU Bo, CAI Chuan, CHEN Xing-yu, HE Kai
    (State Grid Sichuan Electric Power Company Chengdu Power Supply Company, Chengdu 610000, China)
     
        Abstract: The paper first analyzes why the reactive circulating current generates as the transformer voltage ratio is inconsistent. Then, it introduces the calculation methods of reactive circulating current respectively for two-winding parallel operation and three-winding parallel operation of the three-phase three-winding transformer. Thirdly, two abnormal cases of reactive circulating current occurring to parallel-operation transformers in Chengdu power grid are analyzed to verify the effectiveness of calculation methods. These calculation methods can provide reference for power supply companies that meet the similar situations.
        Key words: transformer; voltage ratio; reactive circulating current
     
    參考文獻(xiàn)
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