【正文】 engineering design, study, be collected information, consulting literature, investigation, parison, design drawings and other aspects of training, and further add new knowledge and skills. Through the graduation design, bined with the design of electrical power plant, further consolidate professional knowledge, improve the ability of integrating theory with practice, for the future to lay a solid foundation for social. Keywords: electric power systems, thermal power plant, the main wiring and electrical equipment 目 錄 內(nèi)容提要 ........................................................................................................ I Smmary ......................................................................................................... II 第一部分 設(shè)計(jì)說(shuō)明書 .................................................................................. 1 1 電氣主接線設(shè)計(jì) ........................................................................................ 1 主接線的設(shè)計(jì)原則和要求 ..................................................................... 1 電氣主接線的設(shè)計(jì) ................................................................................. 2 發(fā)電機(jī)的選擇 ........................................................................................ 5 主變壓器的選擇 .................................................................................... 5 2 廠用電設(shè)計(jì) ............................................................................................... 7 廠用電設(shè)計(jì)的要求 ................................................................................. 8 廠用電設(shè)計(jì)的原則 ................................................................................. 8 廠用電接線的最終確定 ......................................................................... 9 3 短路電流計(jì)算 ......................................................................................... 11 短路電流計(jì)算的目的和規(guī)定 ............................................................... 11 短路計(jì)算步驟 ...................................................................................... 12 4 電氣設(shè)備選擇與校驗(yàn) .............................................................................. 15 電氣設(shè)備選擇的一般原則 ................................................................... 15 斷路器的選擇及校驗(yàn) ........................................................................... 17 隔離開關(guān)選擇與校驗(yàn) ........................................................................... 19 電壓互感器選擇 ................................................................................... 20 電流互感器的選擇與校驗(yàn) ................................................................... 22 高壓熔斷器的選擇與校驗(yàn) ................................................................... 23 母線的選擇與校驗(yàn) ............................................................................... 24 500kV 進(jìn)出線的選擇與校驗(yàn) ............................................................... 26 接地開關(guān)的選擇與校驗(yàn) ....................................................................... 27 5 配電裝置設(shè)計(jì) .......................................................................................... 29 配電裝置的分類及其要求 ................................................................... 29 配電裝置的設(shè)計(jì)原則及步驟 ............................................................... 30 6 防雷保護(hù)設(shè)計(jì) .......................................................................................... 33 避雷器的 類型及作用 ........................................................................... 33 避雷器的選擇 ...................................................................................... 33 7 發(fā)電機(jī)、主變保護(hù)設(shè)計(jì) .......................................................................... 35 發(fā)電機(jī)保護(hù) .......................................................................................... 35 變壓器保護(hù) .......................................................................................... 41 第二部分 設(shè)計(jì)計(jì)算書 ................................................................................ 42 8 短路電流計(jì)算 .......................................................................................... 42 ??1點(diǎn)短路電流計(jì)算 .............................................................................. 42 ??2點(diǎn)短路電流計(jì)算 .............................................................................. 46 ??3點(diǎn)短路電流計(jì)算 .............................................................................. 47 9 電氣設(shè)備的選擇與校驗(yàn)計(jì)算 .................................................................. 51 斷路器校驗(yàn)計(jì)算 ................................................................................... 51 隔離開關(guān)校驗(yàn)計(jì)算 ............................................................................... 52 互感器校驗(yàn)計(jì)算 ................................................................................... 53 母線及接地開關(guān)校驗(yàn)計(jì)算 ................................................................... 53 總 結(jié) ........................................................................................................... 56 參考文獻(xiàn) ..................................................................................................... 57 致謝 ............................................................................................................. 58 附錄 ............................................................................................................. 59 邵陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） 1 第一部分 設(shè)計(jì)說(shuō)明書 1 電氣主接線設(shè)計(jì) 主接線的設(shè)計(jì)原則和要求 發(fā)電廠電氣主接線是電力系統(tǒng)接線的主要組成部分。本設(shè)計(jì)完成設(shè)計(jì)說(shuō)明書和設(shè)計(jì)計(jì)算書各一份，英文原版翻譯一份，繪制電氣主接線圖、平面布置圖、斷面圖。 邵陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） I 內(nèi)容提要 眾所周知 ， 電力行業(yè)是國(guó)民經(jīng)濟(jì)的基礎(chǔ)工業(yè) ， 它的發(fā)展直接關(guān)系到國(guó)家經(jīng)濟(jì)建設(shè)的興衰成敗 ， 因此有“經(jīng)濟(jì)要發(fā)展，電力應(yīng)先行”的口號(hào)。 本設(shè)計(jì)的主要內(nèi)容是設(shè)計(jì)主接線并進(jìn)行方案的技術(shù)經(jīng)濟(jì)比較，可靠性指標(biāo)的定量分析計(jì)算，主變的選擇，短路電流計(jì)算，電氣設(shè)備的選擇與校驗(yàn)，配電裝置、廠用電、防雷保護(hù)及發(fā)電機(jī)和主變保護(hù)設(shè)計(jì)。 關(guān)鍵詞： 電力系統(tǒng)、火力發(fā)電廠、主接線、電氣設(shè)備 邵陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)（論文） II Smmary As everyone knows, the power industry is the fundamental industry of national economy, its development is directly related to the economic development of the country39。配電裝置的布置，繼電保護(hù)和自動(dòng)裝置的確定，關(guān)系著電力系統(tǒng)的安全、穩(wěn)定、靈活和經(jīng)濟(jì)運(yùn)行。衡量主接線運(yùn)行可靠性的標(biāo)志是： ① 斷路器檢修時(shí)，能否不影響供電