【正文】 ters snd figure equivalent calculate circuit current of each voltage level,then list the shourcirrcuit current table。 shortcircuit current。 main transformer protection； distribution equipment 內(nèi)蒙古工業(yè)大學(xué)本科畢業(yè)設(shè)計(jì)說(shuō) 明書(shū) IV 目 錄 引言 ....................................................................................................................................... 1 第一章 變電站電氣主接線設(shè)計(jì)及主變壓器的選擇 ....................................................... 2 主接線的設(shè)計(jì)原則和要求 ....................................................................................... 2 主接線的設(shè)計(jì)原則 ............................................................................................ 2 主接線設(shè)計(jì)的基本要求 .................................................................................... 2 主接線的設(shè)計(jì) ........................................................................................................... 4 設(shè)計(jì)步驟 ............................................................................................................ 4 初步方案設(shè)計(jì) .................................................................................................... 4 最優(yōu)方案確定 .................................................................................................... 7 主變壓器的選擇 ....................................................................................................... 7 主變壓器臺(tái)數(shù)的選擇 ........................................................................................ 7 主變壓器型式的選擇 ........................................................................................ 8 主變壓器容量的選擇 ........................................................................................ 9 主變壓器型號(hào)的選擇 ........................................................................................ 9 負(fù)荷率計(jì)算 ...................................................................................................... 9 第二章 站用電設(shè)計(jì) ......................................................................................................... 11 站用電設(shè)計(jì)的要求及接線形式設(shè)計(jì) ..................................................................... 11 設(shè)計(jì)要求 .......................................................................................................... 11 站用主接線設(shè)計(jì) .............................................................................................. 11 站用變壓 器的選擇 ................................................................................................. 11 站用變壓器的選擇的基本原則 ...................................................................... 11 站用變壓器型號(hào)的選擇 .................................................................................. 12 第三章 短路電流計(jì)算 ..................................................................................................... 13 短路計(jì)算的目的、規(guī)定與步驟 ............................................................................. 13 短路電流計(jì)算的目的 ...................................................................................... 13 短路計(jì)算的一般規(guī)定 ...................................................................................... 13 計(jì)算步驟 .......................................................................................................... 14 變壓器的參數(shù)計(jì)算及短路點(diǎn)的確定 ..................................................................... 14 變壓器參數(shù)的計(jì)算 .......................................................................................... 14 內(nèi)蒙古工業(yè)大學(xué)本科畢業(yè)設(shè)計(jì)說(shuō) 明書(shū) V 短路點(diǎn)的確定 .................................................................................................. 15 各短路點(diǎn)的短路計(jì)算 ............................................................................................. 15 短路點(diǎn) d1 的短路計(jì)算 (110KV 母線 )............................................................ 15 短路點(diǎn) d2 的短路計(jì)算 (35KV 母線 ) ............................................................. 16 短路點(diǎn) d3 的短路計(jì)算 (10KV 母線 ) ............................................................. 17 短路點(diǎn) d4 的短路計(jì)算 ................................................................................... 18 繪制短路電流計(jì)算結(jié)果表 ..................................................................................... 19 第四章 電氣設(shè)備選擇與校驗(yàn) ......................................................................................... 20 電氣設(shè)備選 擇的一般規(guī)定 ..................................................................................... 20 一般原則 .......................................................................................................... 20 有關(guān)的幾項(xiàng)規(guī)定 .............................................................................................. 20 各回路持續(xù)工作電流的計(jì)算 ................................................................................. 21 高壓電氣設(shè)備選擇 ................................................................................................. 21 斷路器的選擇與校驗(yàn) ...................................................................................... 21 隔離開(kāi)關(guān)的選擇及校驗(yàn) .................................................................................. 25 電流互感器的選擇及校驗(yàn) .............................................................................. 27 電壓互感器的選擇及校驗(yàn) .............................................................................. 31 避雷器的選擇及檢驗(yàn) ...................................................................................... 32 母線與電纜的選擇及校驗(yàn) .............................................................................. 34 熔斷器的選擇 .................................................................................................. 37 第五章 無(wú)功補(bǔ)償設(shè)計(jì) ..................................................................................................... 39 無(wú)功補(bǔ)償?shù)脑瓌t與基本要求 ................................................................................. 39 無(wú)功補(bǔ)償?shù)脑瓌t .............................................................................................. 39 無(wú)功補(bǔ)償?shù)幕疽? ...................................................................................... 39