發(fā)布時間：2018-01-06 18:11

  本文關(guān)鍵詞：基于CFD技術(shù)的六氟化硫電氣設(shè)備中氣體濕度測量方法研究　出處：《電工技術(shù)學(xué)報》2014年S1期 　論文類型：期刊論文

  更多相關(guān)文章： 六氟化硫 電氣設(shè)備 濕度 擴(kuò)散 模擬

【摘要】：六氟化硫氣體濕度是保證氣體絕緣電氣設(shè)備安全運(yùn)行的重要指標(biāo),為研究不同氣體濕度測量方法測試結(jié)果的準(zhǔn)確性,采用CFD技術(shù)對封閉與流動體系條件下水分子在設(shè)備內(nèi)部的擴(kuò)散過程進(jìn)行了模擬,結(jié)果發(fā)現(xiàn)當(dāng)取樣口出現(xiàn)高濕度時,封閉體系中水分子達(dá)到擴(kuò)散均勻一般需要幾小時時間,而流動體系中水分子達(dá)到擴(kuò)散均勻僅需要幾秒鐘時間;當(dāng)設(shè)備本體出現(xiàn)高濕度時,封閉體系中水分子達(dá)到擴(kuò)散均勻仍需要幾小時時間,而流動體系中水分子達(dá)到擴(kuò)散均勻的時間不超過60s。這證明了無論是在封閉還是流動體系下取樣口上安裝的氣體濕度在線測量裝置都不能實時反映充氣設(shè)備本體內(nèi)的氣體濕度,六氟化硫設(shè)備中氣體濕度測量最有效的方法是將設(shè)備內(nèi)的氣體引出后再進(jìn)行濕度測量。
[Abstract]:Sulfur hexafluoride gas humidity is an important index to ensure the safe operation of gas insulated electrical equipment. CFD technique was used to simulate the diffusion process of water molecules in the equipment under closed and flowing system conditions. The results showed that the high humidity appeared at the sampling port. It takes several hours for water molecules to reach diffusion uniformity in closed system, but only a few seconds for water molecules in flow system to reach diffusion uniformity. When there is high humidity in the device, it still takes several hours for the water molecules in the closed system to reach the diffusion uniformity. However, the diffusion time of water molecules in the flow system is not more than 60 s. This proves that the on-line measuring device of gas humidity installed on the sampling port under both closed and flowing system can not reflect the inflatable equipment in real time. The humidity of the gas in the body. The most effective method of gas humidity measurement in sulfur hexafluoride equipment is to measure the humidity after the gas is extracted from the equipment.
【作者單位】： 國網(wǎng)湖南省電力公司電力科學(xué)研究院;
【分類號】：TM506
【正文快照】： 1引言六氟化硫(SF6)氣體由于其優(yōu)良的絕緣和滅弧性能被廣泛應(yīng)用于各類高壓電氣設(shè)備中[1-5]。然而,水分的存在會大幅降低SF6氣體優(yōu)越的電氣性能。水分子能夠與SF6電離分解產(chǎn)物反應(yīng)生成HF、SO2、SOF2等毒性氣體,這些氣體會對設(shè)備金屬部件產(chǎn)生腐蝕,甚至導(dǎo)致機(jī)械操作失靈。更重要

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本文編號：1388902