【正文】 2600MW 發(fā)電廠電氣部分初步設計 I 摘 要 本畢業(yè)設計論文是 2?600MW 發(fā)電廠電氣部分初步設計。全論文除了摘要、畢業(yè)設計書之外，還詳細的說明了各種設備選擇的最基本的要求和原則依據(jù)。 變壓器的選擇包括：發(fā)電廠主變壓器、高壓備用變壓器及高壓廠用變壓器的臺數(shù)、容量、型號等主要技術(shù)數(shù)據(jù)的確定；電氣主接線主要介紹了電氣主接線的重要性、設計依據(jù)、基本要求、各種接線形式的優(yōu)缺點以及主接線的比較選擇，并制定了適合本廠要求的主接線； 廠用電接線包括：廠用電接線的總要求以及廠用母線接線設計。短路電流計算是最重要 的環(huán)節(jié)，本論文詳細的介紹了短路電流計算的目的、假定條件、一般規(guī)定、元件參數(shù)的計算、網(wǎng)絡變換、以及各短路點的計算等知識； 高壓電氣設備的選擇包括母線、高壓斷路器、隔離開關(guān)、電流互感器、電壓互感器、高壓開關(guān)柜的選擇原則和要求，并對這些設備進行校驗和產(chǎn)品相關(guān)介紹 。而根據(jù)本論文所介紹的高壓配電裝置的設計原則、要求和 500KV 的配電裝置，決定此次設計對本廠采用分相中型布置。繼電保護和自動裝置的規(guī)劃，包括總則、自動裝置、一般規(guī)定和發(fā)電機、變壓器、母線等設備的保護， 而發(fā)電廠和變電所的防雷保護則主要針對避雷針和避雷器 的設計。此外，在論文適當?shù)奈恢眠€附加了圖紙（主接線、平面圖、防雷保護等）及表格以方便閱讀、理解和應用。 關(guān)鍵詞 電力系統(tǒng) ， 短路計算 ， 設備選擇， 母線 ， 高壓斷路器 沈陽工程學院畢業(yè)設計 II Aabstract This paper is the designation to 2600MW thermal power plant electricity part. Whole thesis besides summary graduate to design the book outside, returned the expatiation every kind of most basic request that equipments choose with principle according to. The choice of the transformer includes:Main transformer, high pressure in power plant back transformer and high pressure factories use the main technique in number, capacity, model number...etc. in set data of the transformer to really settle。The electricity lord connected the line to introduce primarily the electricity lord connects the linear importance, design according to, the basic request, every kind of merit and shorting and lords that connect the line form connects the linear choosing more, the lord that bine to establish the in keeping with my plant the request connects the line。 The factory connects with the electricity the line includes:The factory connect the linear total request and factory to connect the line design with the mother line with the shortcircuit galvanometer is regarded as the most important link, this thesis introduced the calculating purpose in shortcircuit electric current, assumption term, general provision, the calculation, work transformation of a parameter detailedly, and each calculation etc. knowledge that short circuit order。 The choice of the high pressure electricity equipments includes the mother line, high pressure breaks the road machine and insulate the switch, electric current to feels with each other the machine, electric voltage feels with each other the choice principle of the machine, high pressure switch cabi with request, and proceed to these equipmentseses the school check with the related introduction in go together with the design principle of the electricity device, request to go together with the electricity device with 500 KVs according to this thesis a high pressure for introducing, decide this time design to adopt the cent the mutually mediumsized arranging to the my electricity protection with the programming of the automatic device, include total, automatic device, general provision with the protection of generator, transformer, mother line etc. equipments, but power plant with change to give or get an electric shock a design for defending thunder protecting then primarily aiming at lightning rod with lightning addition, return in the appropriate position in thesis additional diagram paper( the lord connects the line, plane chart and defend thunder protection etc.) and forms read, prehend with the convenience with applied. Key Words Power system， short circuit calculation， The equipments choice， Bus， High voltage circuit breaker 2600MW 發(fā)電廠電氣部分初步設計 III 目 錄 摘 要 .............................................................................................................................................. I Aabstract ........................................................................................................................................II 第一部分 說明書 ........................................................................................................................... 1 第 1 章 主變壓器 的 選擇 ............................................................................................................... 1 容量和臺數(shù)的確定 .............................................................................................................. 1 型式和結(jié)構(gòu)的選擇 .............................................................................................................. 1 相數(shù) ................................................................................................................................ 1 繞組數(shù)與結(jié)構(gòu) ................................................................................................................ 1 繞組接線組別 ................................................................................................................ 2 調(diào)壓方式 ........................................................................................................................ 2 冷卻方法 ........................................................................................................................ 2 第 2 章 電氣主接線的設計 ........................................................................................................... 3 主接線設計的要求和原則 .................................................................................................. 3 主接線設計的基本要求 ................................................................................................ 3 大機組超高壓主接線可靠性的特殊要求 .................................................................... 3 主接線設計的原則 ........................................................................................................ 3 原始資料分析 ...................................................................................................................... 4 主接線方案的擬定 .............................................................................................................. 4 發(fā)電機 變壓器單元接線 .........................................................................................