基于場(chǎng)路耦合的超高壓GIS母線溫度場(chǎng)研究
王振芹，孫桂林，張永剛，陳連業(yè)
(傳奇電氣(沈陽(yáng))有限公司，遼寧 沈陽(yáng) 110136)
摘 要：超高壓 GIS 母線發(fā)熱的最高點(diǎn)主要出現(xiàn)在觸頭、觸指部位。運(yùn)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(chǎng)-流場(chǎng)-溫度場(chǎng)耦合有限元求解模型。將觸指進(jìn)行合理簡(jiǎn)化，計(jì)算了母線導(dǎo)體、觸頭、觸指等各部位元件的功率損耗，并將其作為發(fā)熱源，耦合至流場(chǎng)-溫度場(chǎng)求解模型，計(jì)算出母線溫度場(chǎng)分布。將計(jì)算結(jié)果與溫升試驗(yàn)數(shù)據(jù)對(duì)比，觸頭溫度誤差在0.3%，導(dǎo)體溫度誤差在1.04%，外殼溫度誤差在4%，證明了觸指簡(jiǎn)化模型的合理性與正確性，對(duì) GIS 母線設(shè)計(jì)以及觸頭、觸指的溫度場(chǎng)仿真具有指導(dǎo)意義。
關(guān)鍵詞： 觸頭；觸指；GIS 母線；耦合場(chǎng)；接觸電阻；溫度場(chǎng)
中圖分類號(hào)：TM595 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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