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畢業(yè)論文-某發(fā)電廠電氣一次及變壓器、母線保護(hù)設(shè)計(jì)(已修改)

2025-01-24 16:18 本頁面
 

【正文】 畢業(yè)設(shè) 計(jì)( 論 文) 題 目 xxxxxxxx發(fā)電廠 電氣 一次 及變壓器、母線保護(hù)設(shè)計(jì) 專 業(yè) 電氣工程及其自動(dòng)化 (電力) 班 級(jí) 電力 082 學(xué) 生 指導(dǎo)教師 2022 年 xxx: xxxx發(fā)電廠電氣一次及變壓器、母線保護(hù)設(shè)計(jì) 摘 要 本次畢業(yè)設(shè)計(jì)為 xx 第二發(fā)電廠電氣一次及變壓器、母線保護(hù)設(shè)計(jì)。 內(nèi)容包括: 電氣主接線方案的擬定、比較和選擇;短路電流的計(jì)算;主要電氣設(shè)備和導(dǎo)體的選擇 及校驗(yàn) ; 配電裝置的 設(shè)計(jì);變壓器、母線保護(hù)設(shè)計(jì)。其中 電氣主接線設(shè)計(jì)是電力工程設(shè)計(jì)的重要環(huán)節(jié),它表明發(fā)電廠內(nèi)的發(fā)電機(jī)、變壓器、各電壓等級(jí)的線路、各種電氣設(shè)備之間的連接形式。它甚至影響發(fā)電廠、變電站乃至相關(guān)的電力系統(tǒng)的安全、經(jīng)濟(jì)、穩(wěn)定、靈活的運(yùn)行。 在本次設(shè)計(jì)中 ,首先 ,對(duì) xx 第二發(fā)電廠的原始資料進(jìn)行分析 ,了解發(fā)電廠概況 ,從而擬定初步的主接線方案 , 經(jīng)過技術(shù)、經(jīng)濟(jì)綜合比較,選擇出一個(gè)最優(yōu)方案作為本次設(shè)計(jì)的最終方案。 并用該方案進(jìn)行短路電流計(jì)算, 根據(jù)短路電流計(jì)算結(jié)果選擇電氣一次設(shè)備并對(duì) 其進(jìn)行 校驗(yàn)。 然后進(jìn)行 配電 裝置設(shè)計(jì)。 最后對(duì)變壓器和母線進(jìn)行保護(hù)設(shè)計(jì)并 畫出各保護(hù)的原理接線圖和展開圖。 關(guān)鍵詞: 發(fā)電廠 , 電氣一次設(shè)計(jì), 短路電流 , 電力系統(tǒng) , 繼電保護(hù) , 電氣設(shè)備 2022屆電氣工程及其自動(dòng)化(電力)專業(yè)畢業(yè)設(shè)計(jì)(論文) The primary electrical design, the transformer and the bus bar protection design of Baoji second power plant ABSTRACT This design is for the primary electrical parts , the transformer and the bus bar protection design of Baoji second power plant , including the design ,parison and selection of the main electrical connection, the calculation of the shortcircuit current, the selection and Calibration of the main electrical equipments and the conductor, the design of the distribution apparatus and the design of the transformer and the bus bar protection. Among them, the design of the main electrical connection is the core. It suggests the situation of the connection among generator, transformer, lines of various voltage levels,various electrical equipments. It also affects the safe, economical, stable and flexible operation of power plant, transformer substation. In this design, firstly, the scheme of the main electrical connection is studied out after the analysis of the original data and the acquaintance of power station. Second, passing through the technological and economic analysis, the best method is selected. At the same time, the shortcircuit current is calculated by using it and primary electric equipment is selected and validated according to the former result. Then, the antithunder and grounding device is designed. Last, the transformer and the bus bar protection are designed and the schematic and wiring diagrams is designed. Key words: Power plant, Short circuit, electric power system, relay protection, electrical equipment xxx: xxxx發(fā)電廠電氣一次及變壓器、母線保護(hù)設(shè)計(jì) 目錄 第一部分 設(shè)計(jì)說明書 .......................................................................................... 1 第一章 緒 論 ....................................................................................................... 1 第二章 電氣主接線設(shè)計(jì) ...................................................................................... 2 設(shè)計(jì)原始資料及分析 ..................................................................................... 2 電氣主接線設(shè)計(jì)的設(shè)計(jì)原則和基本要求 ...................................................... 3 電氣主接線方案的初步擬定 ......................................................................... 4 主接線方案選擇 ............................................................................................. 7 第三章 短路電流計(jì)算 ........................................................................................ 10 短路電流計(jì)算的目的和步驟 ....................................................................... 10 電力變壓器和發(fā)電機(jī)的選擇 ....................................................................... 10 電力系統(tǒng)元件參數(shù)的計(jì)算 ........................................................................... 14 短路電流計(jì)算結(jié)果 ....................................................................................... 17 第四章 導(dǎo)體和主要電氣設(shè)備選擇 ..................................................................... 19 電氣設(shè)備選擇的一 般要求 ........................................................................... 19 高壓斷路器的選擇 ....................................................................................... 21 高壓隔離開關(guān)的選擇 ................................................................................... 22 母線的選擇 ................................................................................................... 24 互感器的選擇 ............................................................................................... 25 斷路器選型校驗(yàn) ........................................................................................... 29 隔離開關(guān)選型校驗(yàn) ....................................................................................... 32 母線的選型校驗(yàn) ........................................................................................... 35 互感器的選擇校驗(yàn) ....................................................................................... 39 避雷器的選擇 ........................................................................................... 43 2022屆電氣工程及其自動(dòng)化(電力)專業(yè)畢業(yè)設(shè)計(jì)(論文) 第五章 配電裝置的設(shè)計(jì) .................................................................................... 47 第六章 變壓器及母線保護(hù)的設(shè)計(jì) ...................................................................... 49 對(duì)繼電保護(hù)動(dòng)作的基本要求 ....................................................................... 49 電力變壓器的繼電 保護(hù) ............................................................................... 50 母線保護(hù) ....................................................................................................... 51 保護(hù)整定計(jì)算 ............................................................................................... 52 第二部分 設(shè)計(jì)計(jì)算書 ...................................................................................... 64 第七章 短路電流計(jì)算 ................................................................................... 64 三相短路電流的計(jì)算 ................................................................................... 64 不對(duì)稱短路電流的計(jì)算 ............................................................................... 76 第八章 總結(jié) ........................................................................................
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