【正文】 ***大學(xué) 本科畢業(yè)設(shè)計（論文） 4000kVA 電力變壓器的設(shè)計 學(xué)生姓名： XXX XXX 學(xué)生學(xué)號： 院（系）： 電氣信息工程學(xué)院 年級專業(yè)： 指導(dǎo)教師： 講師 二〇一〇年六月 ***大學(xué) 本科畢業(yè)設(shè)計（論文） 摘要 I 摘 要 電力變壓器是 發(fā)電廠和變電所的主要設(shè)備之一。變壓器不僅能升高電壓把電能送到用電地區(qū)，還能把電壓降低為各級使用電壓，以滿足各級用電的需求。 變壓器的設(shè)計工作，關(guān)鍵在于材料的選取和變壓器結(jié)構(gòu)的優(yōu)化。為滿足完成低損耗的變壓器任務(wù)，本設(shè)計選取磁通密度高、鐵損低、磁化容量小的冷匝硅鋼片作為鐵心，減少了變壓器的鐵心重量和空載損耗；選取電阻小，單位電流密度大的銅導(dǎo)線作為線圈，降低了線圈的負(fù)載損耗；在結(jié)構(gòu)上合理安排線圈的排列，盡量使高低壓線圈間的距離沿圓周方向一致； 為使 導(dǎo)線不出現(xiàn)太大的渦流損耗，導(dǎo)線的繞線方式采用多根并繞。通過以 上的調(diào)整，就可以得到一臺空載損耗低、負(fù)載損耗低、滿足空載電流百分?jǐn)?shù)和阻抗電壓百分?jǐn)?shù)條件的變壓器。 關(guān)鍵詞 電力變壓器，線圈，鐵心，溫升，損耗 ***大學(xué) 本科設(shè)計（論文 ） ABSTRACT II ABSTRACT Power39。S transformer substation is the main power plant and equipment. Not only can increase the voltage transformer, electric power, but also to the area can use voltage levels reduced voltage for, in order to meet the needs of various electricity. Transformer design work, the key lies in the material selection and transformer structure optimization. To meet the pletion of tasks, low loss, and the design of transformer selecting magic flux density high, low loss, iron capacity of cold coils magic core manufacturing as core transformer, reduce weight and noload loss, Selecting resistance, the current density of the big unit of copper wires and reduce the coil winding as the load loss, In the structure of reasonable arrangement of coil, try to make the distance between the winding high along the circumference direction, For wire does not appear too big, the winding wires vortex around the root and more. Through the above, can get a load of noload loss, low loss and satisfy idle current and impedance voltage percentage of transformer percentage conditions. Key words： Power39。S transformer， coil ， core， temperature， loss ***大學(xué) 本科畢業(yè)設(shè)計（論文） 目錄 1 目 錄 摘 要 ............................................................................................................................. I ABSTRACT .......................................................................................................................II 1 緒論 .......................................................................................................................... 1 ............................................................................................................ 1 .................................................................................................. 1 ......................................................................... 1 ....................................................................................... 1 2 變壓器設(shè)計的任務(wù)和要求 ..................................................................................... 3 .................................................................................................. 3 ........................................................................................... 3 ........................................................................................... 4 .................................................................................................. 4 ............................................................................. 4 3 電磁設(shè)計 .................................................................................................................. 5 ................................................................................ 5 .................................................................................................. 6 ...................................................................... 6 ........................................................................................... 7 ....................................................................................... 7 .................................................................................................. 9 ....................................................................................... 9 ......................................................................................... 10 .............................................................................. 10 .................................................................... 10 ......................................................................................... 11 .............................................................................. 11 ..................................................................................... 12 .................................................................................. 12 ....................................................................................................... 13 .................................................................................. 13 ................................................................................................ 13 ..................................................................................... 14 ......................................................................................... 15 .......................................................................................................... 15 ................................................................................................... 17 .................................................................................................. 18 ................................................................................... 18 ...........................