【正文】 ***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)摘要展望未來(lái)，我國(guó)能否在本世紀(jì)中葉基本實(shí)現(xiàn)現(xiàn)代化，相當(dāng)大的程度上取決于能源。電力工業(yè)是國(guó)民經(jīng)濟(jì)的基礎(chǔ)，是重要的支柱產(chǎn)業(yè)，它與國(guó)家的興衰和人民的安康有著密切的關(guān)系，隨著經(jīng)濟(jì)的發(fā)展和現(xiàn)代工業(yè)的建設(shè)的迅速崛起，供電系統(tǒng)的設(shè)計(jì)越來(lái)越全面、系統(tǒng)，工廠用電量迅速增長(zhǎng)，對(duì)電能質(zhì)量、技術(shù)經(jīng)濟(jì)狀況、供電的可靠性指標(biāo)也日益提高，因此對(duì)供電設(shè)計(jì)也有了更高、更完善的要求。變電站作為電能傳輸與控制的樞紐必須改變傳統(tǒng)的設(shè)計(jì)和控制模式，才能適應(yīng)現(xiàn)代電力系統(tǒng)、現(xiàn)代化工業(yè)生產(chǎn)和社會(huì)生活的發(fā)展趨勢(shì)。本設(shè)計(jì)討論的是220kV 變電站電氣部分設(shè)計(jì)（一次系統(tǒng)） ，首先根據(jù)原始資料進(jìn)行分析，負(fù)荷計(jì)算選擇主變壓器，然后在此基礎(chǔ)上進(jìn)行主接線設(shè)計(jì)，再進(jìn)行短路計(jì)算，導(dǎo)體和電氣設(shè)備的選擇，最后進(jìn)行防雷接地設(shè)計(jì)。關(guān)鍵詞：變電站； 負(fù)荷計(jì)算； 短路電流； 設(shè)備選擇； ***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)IABSTRACTLooking ahead, our ability to achieve the middle of this century, modernization, to a large extent depends on energy. The power industry is the basis of the national economy is an important pillar industry, the rise and fall with the State and the people closely related to the wellbeing, along with economic development and the rapid development of modern industry rise, more and more power supply system design prehensive, systematic, rapid growth of plant consumption for power quality, technical and economic conditions, reliability of electricity supply are increasing, and therefore also have higher power supply design, better requirements. Substation as a hub for power transmission and control to change the traditional design and control mode, to adapt to the modern power system, modernization of industrial production and the development trend of social life. The design discussion is part of 220KV electrical substation design (a system), First of all, analyze the original data and choose the main transformer, based on it , design the main wiring and Short Circuit Calculation, at last choose equipment, then mine and the protection of earth and distribution device.Keywords: substation。 shortcircuit current。 equipment selection。 distribution equipment***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)0目錄摘要 ...............................................................IABSTRACT........................................................II1 引言 ..............................................................12 電氣主接線的設(shè)計(jì) ..................................................2 電氣主接線的概述 .............................................2 電氣主接線的基本要求 .........................................2 電氣主接線設(shè)計(jì)的原則 .........................................2 電氣主接線的方案選擇 .........................................3 方案擬 定 ................................................3 方 案比較 ................................................6 方案確 定 ................................................63 負(fù)荷計(jì)算和主變壓器的選擇 ..........................................7 主變壓器的選擇原則 ...........................................7 主變壓器臺(tái)數(shù)的選擇 ......................................7 主變壓器容量的選擇 ......................................7 主變壓器型式和結(jié)構(gòu)的選擇 ................................8 負(fù)荷計(jì)算 .....................................................9 無(wú)功補(bǔ)償 ....................................................11 功率因數(shù)定義 ...........................................11 功補(bǔ)償容量計(jì)算 .........................................12 主變壓器選擇結(jié)果 ............................................144 站用電接線及設(shè)備用電源接線方案 ...................................15 所用電源數(shù)量及容量 ..........................................15***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)1 所用電源引接方式 ............................................15 所用變壓器低壓側(cè)接線 ........................................16 所站用電接線 ................................................16 備用電源 ....................................................165 電氣部分短路計(jì)算 .................................................18 短路故障的危害 18 短路電流計(jì)算的目的 ..........................................19 短路電流計(jì)算的內(nèi)容 ..........................................19 短路電流計(jì)算方法 ............................................20 三相短路電流周期分量起始值的計(jì)算 ............................20 短路電流計(jì)算的基準(zhǔn)值 ...................................20 網(wǎng)絡(luò)模型 ...............................................20 三相短路電流周期分量起始值的計(jì)算步驟 ...................206 導(dǎo)體和電氣設(shè)備的選擇 .............................................25 按正常工作條件選擇電氣設(shè)備 ..................................25 按短路狀態(tài)校驗(yàn) ..............................................26 高壓斷路器和隔離開(kāi)關(guān)的選擇 ..................................27 高壓斷路器的選擇 .......................................27 隔離開(kāi)關(guān)的選擇 .........................................28 220KV 側(cè)斷路器隔離開(kāi)關(guān)的選擇與校驗(yàn) ..........................29 主變壓器側(cè)斷路 器的選擇與校驗(yàn) ...........................29 主變 壓器側(cè)隔離開(kāi) 關(guān)的 選擇與校驗(yàn) .........................30 110KV 側(cè)的 斷路器隔離開(kāi)關(guān)的選擇與校驗(yàn) ........................31 主變壓器側(cè)斷路器的選擇與 校驗(yàn) ...........................31 主變壓器側(cè)隔 離開(kāi)關(guān)的選擇 與校驗(yàn) .........................32 35KV 側(cè)斷路器隔離開(kāi)關(guān)的選 擇與校驗(yàn) ...........................33***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)2 主變壓器側(cè)斷路器的選擇與校驗(yàn) ...........................33 主變壓器側(cè)隔離開(kāi) 關(guān)的選擇與校驗(yàn) .........................34 互感器的選擇 ................................................35 電流互感器的 選擇 .......................................35 電壓互感器的選擇 .......................................41 35KV 高壓熔斷器的選擇 .......................................43 熔斷器的選擇概述 .......................................43 35kV 側(cè)熔斷器的選擇 ....................................44 導(dǎo)體的選擇與校驗(yàn) ............................................44 220kV 母 線選擇 .........................................45 110kV 母線選擇 .........................................45 35kV 母線選擇 ..........................................46 變壓器 220kV 側(cè)引接線的選擇與校驗(yàn) .......................47 變壓器 110kV 側(cè)引接線的選擇與校驗(yàn) .......................48 變壓器 35kV 側(cè)引接線的選擇與校驗(yàn) ........................497 防雷及過(guò)電壓保護(hù)裝置設(shè)計(jì) .........................................51 避雷針 ......................................................51 避雷器 ......................................................52 防雷接地 ....................................................53 變電所的防雷保護(hù) ............................................54 變電所的進(jìn)線段保護(hù) ..........................................55 接地裝置 ....................................................558 結(jié)束語(yǔ) ...........................................................56致謝 ..............................................................57參考文獻(xiàn) ..........................................................58***大學(xué)畢業(yè)設(shè)計(jì)（論文）說(shuō)明書(shū)01 引言電力事業(yè)的日益發(fā)展緊系著