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

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    靜止無功發生器模塊間銅排發熱分析及優化

    來源:電工電氣發布時間:2020-12-18 15:18 瀏覽次數:693
    靜止無功發生器模塊間銅排發熱分析及優化
     
    郭黎黎,鄭毅,張科乾,陶佳
    (常州博瑞電力自動化設備有限公司,江蘇 常州 213025)
     
        摘 要:某靜止無功發生器(SVG)運行時,模塊間連接銅排局部溫升會遠超出溫升限值,迫使SVG退出運行,其所在母線因為失去無功支撐,電壓大幅下降,嚴重威脅系統的穩定性。針對SVG模塊間連接銅排局部過熱的問題,排除了常規因素截面、集膚效應、接觸電阻等的影響,通過理論計算與仿真對比分析出銅排過熱原因為銅排結構及布置方式不合理,通過調整銅排結構、布置方式以及對SVG自身結構的改進等措施,將銅排溫升限制在合理范圍內,保障SVG安全可靠運行,以提供穩定的電壓支撐。
        關鍵詞:靜止無功發生器;銅排;局部過熱;仿真;優化
        中圖分類號:TM714.3;TM761     文獻標識碼:B     文章編號:1007-3175(2020)12-0061-05
     
    Analysis of Copper Bar Heating Problem Used for Static Var Generator Module
    Connecting and Optimization Method Research
     
    GUO Li-li, ZHENG Yi, ZHANG Ke-qian, TAO Jia
    (NR Electric Power Electronics Co., Ltd, Changzhou 213025, China)
     
        Abstract: When a static var generator (SVG) is running, the local temperature rise of the copper busbars connected between the modules will far exceed the temperature rise limit, forcing the SVG to exit operation. The bus bar on which it is located loses reactive support and the voltage drops significantly, which seriously threatens the system stability. Aiming at the local overheating of copper bars connected between SVG modules, the influence of conventional factors such as cross-section, skin effect, contact resistance, etc. has been eliminated. Through theoretical calculation and simulation comparison, it is analyzed that the reason for copper bar overheating is that the structure and layout of copper bars are unreasonable. By adjusting the structure and layout of the copper bar, and improving the structure of the SVG itself, the temperature rise of the copper bar is limited to a reasonable range, and the safe and reliable operation of the SVG is guaranteed to provide stable voltage support.
        Key words: static var generator; copper bar; heating phenomenon; simulation; optimization
     
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