本文關(guān)鍵詞：環(huán)氧澆注干式變壓器壽命分析　出處：《浙江工業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 環(huán)氧澆注干式變壓器 絕緣 老化 壽命

【摘要】：近些年,我國的經(jīng)濟飛速發(fā)展必然離不開電力的保障,電力設(shè)施的平穩(wěn)持續(xù)安全運行,是保證供電過程穩(wěn)定、安全、可靠的前提。電網(wǎng)的不健全運行必然會造成停電等諸多事故,這不僅會給當(dāng)?shù)貛砭薮蟮慕?jīng)濟損失,而且還會嚴重影響當(dāng)?shù)厝藗兊娜粘Ｉ?更嚴重的還會影響國家的長治久安戰(zhàn)略。變壓器作為電力系統(tǒng)的樞紐設(shè)備,其安全可靠的運行對于整個電力系統(tǒng)的穩(wěn)定運行至關(guān)重要。在實際運行條件下,由于面臨不同負荷以及其它特殊情況,變壓器會出現(xiàn)各種老化現(xiàn)象,最終導(dǎo)致其實際運行壽命遠不及銘牌壽命。所以,對變壓器的絕緣老化機理的分析,并能準確評估變壓器的運行壽命,對電力系統(tǒng)的安全、可靠與穩(wěn)定運行,具有非常重要的應(yīng)用價值和現(xiàn)實意義。本文主要針對環(huán)氧澆注干式變壓器壽命問題,詳細剖析了干式變壓器電氣絕緣材料之環(huán)氧樹脂的老化機理,側(cè)重介紹介質(zhì)損耗因數(shù)tan δ對環(huán)氧樹脂老化的影響。本文不僅從物理化學(xué)因素對環(huán)氧澆注干式的老化機理進行定性分析,還重點提出三種具有可行性的壽命損失計算方法,對環(huán)氧澆注干式變壓器的熱老化問題以及壽命損失進行定量分析,此分析主要把變壓器的絕緣老化率和壽命損失表示為變壓器的運行溫度、時間和負載的函數(shù)。依據(jù)定量計算壽命損失方法,可以較準確地評估干式變壓器在特定環(huán)境運行下壽命損失,對預(yù)測干式變壓器使用壽命具有一定的實用價值。
[Abstract]:In recent years, the rapid development of China's economy is bound to be inseparable from the protection of electricity, power facilities running smoothly and continuously, is to ensure the stability and safety of the power supply process. The unsound operation of the power grid will inevitably lead to power outages and many other accidents, which will not only bring huge economic losses to the local people, but also seriously affect the daily life of local people. As the hub equipment of power system, the safe and reliable operation of transformer is very important for the stable operation of the whole power system. In the face of different loads and other special conditions, transformer will appear various aging phenomena, resulting in its actual operation life is far less than nameplate life. Therefore, the insulation aging mechanism of transformer is analyzed. And can accurately evaluate the operating life of transformers, for the safe, reliable and stable operation of power systems, has a very important application value and practical significance. This paper mainly focuses on the life of epoxy cast-dry-type transformers. The aging mechanism of epoxy resin for electrical insulation materials of dry-type transformers was analyzed in detail. The effect of dielectric loss factor (tan 未) on the aging of epoxy resin is introduced. The aging mechanism of epoxy resin is analyzed qualitatively not only from physical and chemical factors but also from physical and chemical factors. Three feasible calculation methods of life loss are put forward, and the thermal aging problem and life loss of epoxy cast-dry-type transformer are analyzed quantitatively. In this analysis, the insulation aging rate and the life loss of the transformer are expressed as the function of the operating temperature, time and load of the transformer. The loss of service life of dry-type transformer under special environment can be evaluated more accurately, and it has certain practical value in predicting the service life of dry-type transformer.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM412

【參考文獻】

相關(guān)期刊論文 前2條

1 陳杰;;樹脂澆注干式變壓器熱老化問題的分析[J];變壓器;2012年03期

2 廖瑞金;楊麗君;鄭含博;汪可;馬志欽;;電力變壓器油紙絕緣熱老化研究綜述[J];電工技術(shù)學(xué)報;2012年05期

，

本文編號：1434518