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35kv變電站電氣部分設(shè)計畢業(yè)設(shè)計論文-展示頁

2025-03-15 13:37本頁面
  

【正文】 門送交論文(設(shè)計)的電子版和紙質(zhì)版。學(xué)??梢怨颊撐模ㄔO(shè)計)的全部或部分內(nèi)容。 作者簽名: 指導(dǎo)教師簽名: 日期: 日期: 3 注 意 事 項 (論文)的內(nèi)容包括: 1)封面(按教務(wù)處制定的標(biāo)準(zhǔn)封面格式制作) 2)原創(chuàng)性聲明 3)中文摘要( 300 字左右)、關(guān)鍵詞 4)外文摘要、關(guān)鍵詞 5)目次頁(附件不統(tǒng)一編入) 6)論文主體部分:引言(或緒論)、正文、結(jié)論 7)參考文獻(xiàn) 8)致謝 9)附錄(對論文支持必要時) :理工類設(shè)計(論文)正文字?jǐn)?shù)不少于 1萬字(不包括圖紙、程序清單等),文科類論文正文字?jǐn)?shù)不少于 萬字。 、圖表要求: 1)文字通順,語言流 暢,書寫字跡工整,打印字體及大小符合要求,無錯別字,不準(zhǔn)請他人代寫 2)工程設(shè)計類題目的圖紙,要求部分用尺規(guī)繪制,部分用計算機繪制,所有圖紙應(yīng)符合國家技術(shù)標(biāo)準(zhǔn)規(guī)范。電氣主接線是發(fā)電廠變電所的主要環(huán)節(jié),電氣主接線的擬定直接關(guān)系著全廠電氣設(shè)備的選擇、配電裝置的布置、繼電保護(hù)和自動裝置的確定,是變電站電氣部分投資大小的決定性因素。在系統(tǒng)中,變電站成了輸電和配電的集節(jié)點。從負(fù)荷增長方面闡明了建站的必要性,然后通過對擬建變電站的概括 以及出線方向來考慮,并通過對負(fù)荷資料的分析,安全,經(jīng)濟(jì)及可靠性方面考慮,確定了 35kV, 10kV 以及站用電的主接線,然后又通過負(fù)荷計算及供電范圍確定了主變壓器臺數(shù),容量及型號,同時也確定了站用變壓器的容量及型號 ,并進(jìn)行了短路電流計算等內(nèi)容, 從而完成了 35kV 電氣一次部分的設(shè)計。s middle link, is playing the transformation and the assignment electrical energy electrical host wiring is the power plant transformer substation key link, the electrical host wiring draws up is relating the entire factory directly the electrical equipment choice, the power distribution equipment arrangement, the relay protection and the automatic device determination, is the transformer substation electricity part investment size determining transformer substation is assembles some equipment, uses for to shut off, the connection, the change or the regulation the system, the transformer substation has bee the electric transmission and the power distribution collection node. This design first acts according to in the project description to give the system logical circuit and all load parameter, the analysis load trend of expounded from the load growth aspect the station construction necessity, then through to plans to construct the transformer substation the summary as well as the going beyond a line direction considered, and through to shoulders the material the analysis, safe, the economy and the reliable aspect considered, had determined 35kV,10kV as well as the station use electricity the main wiring, then calculated through the load and supplies power the scope to determine the main transformer Taiwan number, the capacity and the model, simultaneously also had determined stood with contents and so on transformer capacity and model, thus has pleted 35kV electricity partial designs. Keywords Main transformer, Single bus bar segment wiring, Short out in the electric current , Electric equipment 6 目 錄 第 1 章 概 述 ................................................................ 8 第 2 章 設(shè)計任務(wù)及要求 ...................................................... 10 設(shè)計任務(wù) ............................................................. 10 設(shè)計要求 ............................................................. 10 技術(shù)要求 ......................................................... 10 設(shè)計內(nèi)容 ......................................................... 10 第 3 章 變電站的總體設(shè)計分析 ................................................. 12 變電站的主要設(shè)備組成 .................................................. 12 負(fù)荷分析 ............................................................. 12 變電站主接線方案的確定 ................................................ 13 主變壓器選擇 ......................................................... 14 主變臺數(shù) 的考慮原則 ................................................ 14 變壓器容量的確定 .................................................. 14 調(diào)壓方式的確定 .................................................... 15 容量比 ........................................................... 15 主變壓器的參數(shù)計算 ................................................ 15 第 4 章 短路電流計算 ........................................................ 17 短路電流的目的及其假定 ................................................ 17 短路電流計算的目的 ................................................ 17 基本假定 ......................................................... 17 基準(zhǔn)值計算 ........................................................... 17 計算短路電路中各元件的電抗及總電抗 ................................. 18 計算三相短路電流和短路容 量 ........................................ 19 第 5 章 電氣設(shè)備的選擇 ...................................................... 22 電氣設(shè)備選擇的基本原則 ................................................ 22 斷路器 ............................................................... 22 35KV 側(cè)斷路器的選擇 ............................................... 22 選擇校驗 ......................................................... 22 10KV 側(cè)出線斷路器及分段斷路器的選擇 ................................ 23 選擇校驗 ......................................................... 23 隔離開關(guān) ............................................................. 24 35KV 側(cè)隔離開關(guān)的選擇 ............................................. 24 10KV 側(cè)隔離開關(guān)的選擇 ............................................. 25 電流互感器的選擇 ...................................................... 26 電流互感器的初選 .................................................. 26 電流互感器的校驗 .................................................. 27 電壓互感器的選擇 .................................................. 28 母線的選擇 ........................................................... 29 35KV 母線的選擇 ................................................... 29 7 10KV 母線的選擇 ................................................... 31 避雷器的選擇 ......................................................... 32 避雷器參數(shù) ........................................................ 32 參數(shù)校驗 ......................................................... 33 避雷針的高度 ..................................................... 33 熔斷器的選擇 ......................................................... 35 型號選擇 ......................................................... 35 熔斷器的選擇校驗 .................................................. 35 10KV 熔斷器型號選擇 ............................................... 36 第 6 章 變電站主變壓器的繼電器保護(hù)設(shè)計 ........................................ 37 變壓器保護(hù)裝置的一般原則 ...................................
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