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帶您了解干式變壓器安全運行

作者: 發表時間:2020-03-31瀏覽量:20066

干式變壓器的安全運行和使用壽命取決于干式變壓器卷線絕緣的安全可靠性。卷線溫度超過絕緣耐力,溫度造成的絕緣損傷是干式變壓器無法正常運作的主要原因之一。因此,干式變壓器的工作溫度的監視和警報控制非常重要。

    干式變壓器的安全運行和使用壽命取決于干式變壓器卷線絕緣的安全可靠性。卷線溫度超過絕緣耐力,溫度造成的絕緣損傷是干式變壓器無法正常運作的主要原因之一。因此,干式變壓器的工作溫度的監視和警報控制非常重要。

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       因為干式變壓器的構造是從內外出發,所以是鐵芯,低壓卷線和高壓卷線。熱源為鐵芯和低壓卷線,外部表面的高壓卷線由于電流小,所以熱量小。因此,干式變壓器和空調在使用普通軸流風扇時的冷卻效果不好。在制造干式變壓器時,留下了專用的冷卻管道。


       干式變壓器只有采用特殊的溫度控制裝置,才能達到預期的效果。為滿足無人值班變電站的要求,建議在現有的變電站變壓器上設置風冷溫度控制系統,對開關柜進行通風改造。如果溫度過高,可以自動啟動換氣散熱裝置。

  溫度信號由埋入低壓卷線的熱部分的PT 100的熱敏器測量。當干式變壓器的負荷增大,運轉溫度上升時,卷線溫度達到一定值(這個值可以調整,F級干式絕緣變壓器一般設定為110℃),系統自動啟動風扇冷卻。當卷線溫度下降到一定值時(這個值也可以調整,F級干式絕緣變壓器一般設定為90℃),系統自動停止風扇。


2020-03-31 20066人瀏覽

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江蘇力王電氣股份有限公司是一家以生產電力變壓器為主,集科研、生產、銷售為一體的大型集團企業。公司主要生產有干式變壓器、油浸式變壓器、預裝式變電站、美式變壓器五大系列。如果您對我們的產品感興趣,請聯系我們,我們會用最優質的產品和最誠摯的服務贏得您的滿意!

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