本文關(guān)鍵詞： 換流變壓器 油紙絕緣缺陷 交直流復(fù)合電壓 局部放電 油中溶解氣體 故障診斷　出處：《高電壓技術(shù)》2015年02期 　論文類型：期刊論文

【摘要】：為實現(xiàn)換流變壓器油紙絕緣故障診斷,搭建了一套交直流復(fù)合電壓作用下油紙絕緣缺陷局部放電和油中溶解氣體檢測平臺,選取針板模型、沿面模型和懸浮模型作為研究對象,得到每個模型不同發(fā)展階段的局部放電和產(chǎn)氣特性,對比了3種典型缺陷模型的特征區(qū)別。研究結(jié)果表明:1)根據(jù)3種典型缺陷模型的脈沖重復(fù)率、平均放電量和總烴體積分數(shù)變化趨勢中的變化現(xiàn)象可以將放電過程劃分為起始階段、發(fā)展階段和鄰近擊穿階段;2)針板模型的脈沖重復(fù)率最低,沿面模型起始脈沖重復(fù)率較低但是放電后期較大,懸浮模型放電脈沖重復(fù)率最高;針板模型起始時放電量為97.5 pC,鄰近擊穿時超過900 pC,沿面模型起始時只有7.1 pC,隨后增長到18.2 pC,而鄰近擊穿時也只有45.6 pC;懸浮模型起始階段的平均放電量很大,發(fā)展階段迅速減小到1 000 pC,鄰近擊穿階段大于1 500 pC;3)針板模型在放電發(fā)展階段總烴中以CH4為主,沿面模型在放電發(fā)展階段中C2H2占到總烴體積分數(shù)的60.6%,懸浮模型在放電發(fā)展階段4類烴類氣體都有產(chǎn)出,其中C2H2氣體最多。
[Abstract]:In order to realize fault diagnosis of oil-paper insulation in converter transformer, a set of partial discharge and dissolved gas detection platform for oil-paper insulation defects under the action of AC / DC compound voltage was set up, and the needle board model was selected. The surface model and suspension model are used as the research objects, and the partial discharge and gas production characteristics of each model are obtained at different stages of development. The characteristics of the three typical defect models are compared. The results show that the pulse repetition rate of the three typical defect models is based on the ratio of pulse repetition of the three typical defect models. The variation of average discharge quantity and total hydrocarbon volume fraction can be divided into the initial stage, the development stage and the adjacent breakdown stage. 2) the pulse repetition rate of the needle plate model is the lowest, the initial pulse repetition rate of the plane model is lower but the discharge period is larger, and the discharge pulse repetition rate of the suspension model is the highest. The discharge of the needle plate model was 97.5 PC at the beginning of the model, more than 900 PC at the near breakdown, and only 7.1 PC at the beginning of the plane model, and then increased to 18.2 PC. However, the nearby breakdown was only 45.6 pC; The average discharge in the initial stage of the suspension model is very large, which decreases rapidly to 1 000 PC in the development stage and is larger than 1 500 PC in the near breakdown stage. 3) the pinboard model is mainly composed of CH4 in the development stage of discharge, while the surface model accounts for 60.6% of the total hydrocarbon volume fraction in the developing stage of discharge. The suspension model has four hydrocarbon gases in the development stage of discharge, among which C _ 2H _ 2 gas is the most.
【作者單位】： 華北電力大學(xué)新能源電力系統(tǒng)國家重點試驗室;華北電力大學(xué)高電壓與電磁兼容北京市重點試驗室;廣東電網(wǎng)有限責(zé)任公司電力科學(xué)研究院;
【基金】：國家自然科學(xué)基金(51477052) 中央高�；究蒲袠I(yè)務(wù)費專項資金(13ZP06)~~
【分類號】：TM407
【正文快照】： Discharge Characteristics of the Typical Defects in Oil-paper Insulation Under AC-DCCompound VoltageQI Bo1,2,WEI Zhen1,2,LI Chengrong1,2,ZHANG Xiaohan1,2,LI Feng3,WANG Hongbin3(1.State Key Laboratory of Alternate Electrical Power System with Renewable En

【參考文獻】

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