【正文】 畢業(yè)設計 母線 ..................................................................................................................... 17 斷路器 ................................................................................................................. 18 隔離開關(guān) ............................................................................................................. 19 絕緣子 ................................................................................................................. 20 電壓互感器 ......................................................................................................... 21 電流互感器 ......................................................................................................... 23 熔斷器 ................................................................................................................. 25 避雷器 ................................................................................................................. 25 電抗器 ................................................................................................................. 26 10kV開關(guān)柜 ..................................................................................................... 27 6 電氣設備布置 ........................................................................................................................... 30 7 初步規(guī)劃二次回路方案 ........................................................................................................... 30 第二部分 設計 計算書 1 變壓器的選擇與最優(yōu)電氣主接線方案的確定 ....................................................................... 32 變壓器的選擇 ................................................................................................................ 32 主變壓器的選擇 ................................................................................................. 32 廠用變壓器的選擇 ............................................................................................. 33 最優(yōu)電氣主接線方案的確定 ........................................................................................ 34 2 短路電流的計算 ....................................................................................................................... 34 網(wǎng)絡化簡 ........................................................................................................................ 34 1k 點短路 ........................................................................................................................ 37 2k 點短路 ........................................................................................................................ 42 3k 點短路 ........................................................................................................................ 48 4k 點短路 ........................................................................................................................ 53 5k 點短路 ........................................................................................................................ 57 3 導體與主要電氣設備的選擇與校驗 ...................................................................................... 62 母線 ................................................................................................................................ 62 ............................................................................ 62 ............................................................................ 65 畢業(yè)設計 斷路器 ............................................................................................................................ 68 220kV側(cè)斷路器 ................................................................................................. 68 ............................................................................ 69 ................................................................................ 70 隔離開關(guān) ........................................................................................................................ 71 220kV側(cè)隔離開關(guān) ............................................................................................. 71 ............................................................................................ 71 ............................................................................................ 72 絕緣子 ............................................................................................................................ 73 ................................................................................................ 73 ................................................................................................ 74 電壓互感器 .................................................................................................................... 74 220kV側(cè)電壓互感器 ......................................................................................... 74 ........................................................................................ 75 器 ........................................................................................ 76 電流互感器 .................................................................................................................... 76 220kV側(cè)電流互感器 ......................................................................................... 76 主變壓器中性點電流互感器 ............................................................................. 77 ........................................................................................ 78 kV側(cè)電流互感器 ....................................................................................... 78 熔斷器 .................................................................................................