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

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    典型隔離開關與電流互感器的熱場分析

    來源:電工電氣發布時間:2017-10-19 13:19 瀏覽次數:7
    典型隔離開關與電流互感器的熱場分析
     
    李佳1,張斌2
    (1 中國電建集團西北勘測設計研究院有限公司,陜西 西安 710065;2 國網浙江省電力公司寧波供電公司,浙江 寧波 315200)
     
        摘 要:隔離開關與電流互感器是電力系統的重要設備,對其進行熱場分析與計算對于確保系統增容運行時的安全具有重要意義。針對典型隔離開關與電流互感器設備,應用熱路模型法對其進行熱場分析。模型包含穩態熱場和動態熱場兩部分,并在建模過程中考慮了環境因素的影響。通過校驗發現,模型計算結果與溫升試驗中現場實測結果偏差不超過10%,說明建立的隔離開關熱路模型與電流互感器熱路模型具有較高的準確性。
        關鍵詞:隔離開關;電流互感器;熱場分析;熱路模型;溫升試驗
        中圖分類號:TM452;TM564.1     文獻標識碼:A     文章編號:1007-3175(2017)10-0026-04
     
    Thermal Field Analysis of Typical Disconnector and Current Transformer
     
    LI Jia1, ZHANG Bin2
    (1 Northwest Engineering Corporation Limited, Power Construction Corporation of China, Xi’an 710065, China;
    2 State Grid Zhejiang Electric Power Company Ningbo Power Supply Company, Ningbo 315200, China)
     
        Abstract: Disconnectors and current transformers are essential equipments in power system, so the thermal field analysis of these devices is crucial for the safety capacity-increase operation of power system. Aiming at the typical disconnectors and current transformers equipments, this paper applied the thermal circuit models to carry out thermal field analysis. The model included the steady thermal field and dynamic thermal field and the environmental factors were considered in the modeling process. Verification shows that the model calculation results and the experimental data meet well as the deviation is within 10%, which indicates that the establishing of thermal circuit models of disconnectors and current transformers have higher accuracy.
        Key words: disconnector; current transformer; thermal field analysis; thermal circuit model; temperature-rising test
     
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