【正文】 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 I SSFZ990000/220/115/35 三 繞組 有 載調(diào)壓 電力變壓器電磁 計算 摘 要 變壓器理論是電機學(xué)的一個分支。盡管變壓器是一個靜止電氣設(shè)備，但由于高電壓、大容量變壓器的出現(xiàn)，變壓器理論同樣是一門復(fù)雜的學(xué)科，所涉及知識面廣，難度也很大。本文主要介紹了電力變壓器的發(fā)展歷史，并且針對 SSFZ990000/220/115/35 三相 三繞組有載調(diào)壓電力變壓器進行了簡單的電磁計算和設(shè)計，其中計算部分包括：變壓器的電路計算、變壓器的磁路計算 、 變壓器短路阻抗計算、變壓器的絕緣、變壓器溫升計算、變壓器電動力計算、變 壓器整體重量計算等。本文重點放在理論與實踐的溝 通，對于每一參數(shù)的選取、每一系數(shù)的取值范圍，都經(jīng)過認(rèn)真思考，并向老師詢問，再進行計算， 在計算中， 也盡量 結(jié)合工程實際 ，以及保證誤差在工程上允許的范圍內(nèi)。最后的運算結(jié)果符合國家標(biāo)準(zhǔn)，完成了變壓器的電磁計算。 關(guān)鍵詞 變壓器；短路阻抗；電磁計算 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 II The calculation and design of SSFZ990000/220/115/35 three winding load variation power transformer Abstract Transformer theory is also a plex subject, involving extensive knowledge, is also very difficult。 This paper describes the development of historical of power transformers, And for SSFZ990000/220/115/35 Threewinding power transformer load tap a simple electromagic calculation and design, some of which include the calculation: calculation of the transformer circuit, the transformer magic circuit calculation, transformer short circuit impedance calculation, transformer insulation, transformer temperature rise calculation, electric power transformer calculation, the overall weight of transformers and so on. This article focuses on munication theory and practice, for each parameter selection, the range of each factor, have been seriously thinking to the teacher about then calculated, in the calculation, but also try to bine engineering and ensure that errors in engineering to the extent permitted. The final calculation results to the national standard, pleted the calculation of electromagic transformer. Keywords power transformer ； short–circuit； electromagic puting 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 III 目錄 摘要 .......................................................................................................................I Abstract ............................................................................................................... II 第 1 章 緒論 ........................................................................................................ 1 我國電力變壓器發(fā)展及發(fā)展趨勢 ........................................................... 1 我國現(xiàn)階段企業(yè)生產(chǎn)變壓器狀況 ........................................................... 1 變壓器計算的一般程序 ........................................................................... 2 本課題的目的和意義 ............................................................................... 3 第 2 章 電力變壓器設(shè)計計算 ............................................................................ 4 技術(shù)條件 ................................................................................................... 4 額定電壓 電流計 算 ................................................................................. 4 繞組的相電壓 .................................................................................... 4 繞組的相電流 .................................................................................... 5 電磁路計算 ............................................................................................... 5 鐵心計算 ............................................................................................ 5 繞組匝數(shù)計算 .................................................................................... 6 高電壓比校核 .................................................................................... 7 繞組的選擇 ........................................................................................ 7 線段排列及計算 ................................................................................ 8 繞組尺寸計算 .................................................................................... 9 繞組絕緣半徑計算 .......................................................................... 11 短路阻抗的計算 ..................................................................................... 11 額定短路阻抗的計算 ...................................................................... 11 最小分接短路阻抗的計算 .............................................................. 14 最大分接短路阻抗的計算 .............................................................. 14 損耗計算 ................................................................................................. 15 空載損耗計算 .................................................................................. 15 空載電流計算 .................................................................................. 15 負(fù)載損耗計算 .................................................................................. 16 溫升計算 ................................................................................................. 20 線圈對油的溫升計算 ...................................................................... 20 線圈對油的溫升 .............................................................................. 21 短路電動力計算 ..................................................................................... 24 變壓器重量的計算 ................................................................................. 29 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 IV 總油重量的計算 .............................................................................. 29 本章小結(jié) ................................................................................................. 32 結(jié)論 .................................................................................................................... 33 致謝 .................................................................................................................... 34 參考文獻 ............................................................................................................ 35 附錄 .................................................................................................................... 36 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 1 第 1章 緒論 我國電力變壓器發(fā)展及發(fā)展趨勢 電力變壓器發(fā)明 于 十九世紀(jì)末，它為現(xiàn)代遠(yuǎn) 距離恒定電壓電流 輸 電系統(tǒng)的發(fā)展奠定了基礎(chǔ)。在十九世紀(jì)之前，公用供電的早期階段里，均采用直流發(fā)電系統(tǒng)，人們不得不把發(fā)電設(shè)備靠近負(fù)載地點。 于是在各種理論與實 踐的大力支持下，電力研究學(xué)者的共同努力下，電力變壓器應(yīng)運而生了 。 我國的電力變壓器制造工業(yè)，從建國以來，隨著國民經(jīng)濟的發(fā)展，特