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

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基於場路耦合的超高壓GIS母線溫度場研究

來源:電工電氣發布時間:2022-08-29 13:29 瀏覽次數:0

基於場路耦合的超高壓GIS母線溫度場研究

王振芹,孫桂林,張永剛,陳連業
(傳奇電氣(沈陽)有限公司,遼寧 沈陽 110136)
 
    摘 要:超高壓 GIS 母線發熱的最高點主要出現在觸頭、觸指部位。運用有限元方法,建立了帶有觸頭、觸指的 550 kV GIS 母線三維電磁場-流場-溫度場耦合有限元求解模型。將觸指進行合理簡化,計算了母線導體、觸頭、觸指等各部位元件的功率損耗,並將其作為發熱源,耦合至流場-溫度場求解模型,計算出母線溫度場分布。將計算結果與溫升試驗數據對比,觸頭溫度誤差在0.3%,導體溫度誤差在1.04%,外殼溫度誤差在4%,證明了觸指簡化模型的合理性與正確性,對 GIS 母線設計以及觸頭、觸指的溫度場仿真具有指導意義。
    關鍵詞: 觸頭;觸指;GIS 母線;耦合場;接觸電阻;溫度場
    中圖分類號:TM595     文獻標識碼:A     文章編號:1007-3175(2022)08-0031-05
 
Research on Temperature Field of EHV GIS Bus
Based on Field-Circuit Coupling
 
WANG Zhen-qin, SUN Gui-lin, ZHANG Yong-gang, CHEN Lian-ye
(Trench High Voltage Product Ltd, Shenyang 110136, China)
 
    Abstract: The highest heating point of the EHV GIS bus often occurs in contacts and contact fingers. This paper used the finite element method to establish a coupled finite element solution model of the magnetic field, flow field, and temperature field of the 550 kV GIS bus with contacts and contact fingers. This research simplified the contact finger and calculated the power dissipation of components from different parts, such as bus conductor, contact, and finger contact. It took the contact finger as a heat source, coupled to flow field and temperature field solving model, furthermore figure out the bus temperature field distribution. In addition, it compared the calculation results to the data of the temperature rise test. The contact temperature error was 0.3%, the conductor temperature error was 1.04%, and the outside temperature error was 4%. The data verified the rationality and correctness of the simplified model of the contact finger. All in all this research has significance to the bus design and the temperature field of contact and contact finger.
    Key words: conract; contact finger; GIS bus; coupled field; contact resistance; temperature field
 
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