【正文】 110KV 降壓變電站電氣一次部分 第 1 頁(yè) 共 57 頁(yè) 畢業(yè)設(shè)計(jì) 110KV 降壓變電站電氣一次部分設(shè)計(jì) 第一部分 設(shè)計(jì)說(shuō)明書 ..................................................................................................... 2 第 1 章 設(shè)計(jì)說(shuō)明 ..................................................................................................... 2 環(huán)境條件 .................................................................................................... 2 電力系統(tǒng)情況 ............................................................................................. 2 設(shè)計(jì)任務(wù) .................................................................................................... 3 第 2 章 電氣主接線的設(shè)計(jì) ....................................................................................... 3 電氣主接線概述 ]1[ ................................................................................ 3 110KV 側(cè)主接線的設(shè)計(jì) .............................................................................. 4 35KV 側(cè)主接線的設(shè)計(jì) ................................................................................ 4 10KV 側(cè)主接線的設(shè)計(jì) ................................................................................ 4 主接線方案的比較選擇 ............................................................................... 4 主接線中的設(shè)備配置 .................................................................................. 6 第 3 章 主變壓器的選擇 .......................................................................................... 8 負(fù)荷分析 .................................................................................................... 8 主變壓器臺(tái)數(shù)的確定 .................................................................................. 9 主變壓器相數(shù)的確定 .................................................................................. 9 主變壓器容量的確定 ................................................................................ 10 第 4 章 短路電流的計(jì)算 ........................................................................................ 10 短路電流計(jì)算 的目的及規(guī)定 ...................................................................... 10 短路電流的計(jì)算結(jié)果 .................................................................................11 第 5 章 主要電氣設(shè)備的選擇 ................................................................................. 12 電氣設(shè)備選擇概述 .................................................................................... 12 高壓斷路器及隔離開關(guān)的選擇 .................................................................. 13 母線的選擇 .............................................................................................. 15 絕緣子和穿墻套管的選擇 ......................................................................... 16 PFF? （ 53） ......................................................................... 17 電流互感器的選擇 .................................................................................... 19 電壓互感器的選擇 .................................................................................... 19 熔斷器的選擇 ........................................................................................... 21 避雷器選擇 .............................................................................................. 21 （ 1） 型式選擇 ............................................................................................................. 22 （ 2） 避雷器滅弧電壓 mU 選擇 ...................................................................................... 22 第 6 章 變電站防雷規(guī)劃 ........................................................................................ 23 防雷規(guī)劃原則 ........................................................................................... 23 防雷規(guī)劃結(jié)果 ........................................................................................... 24 第二部分 設(shè)計(jì)計(jì)算書 .................................................................................................... 25 第 1 章 短路電流計(jì)算 ............................................................................................ 25 110KV 降壓變電站電氣一次部分 第 2 頁(yè) 共 57 頁(yè) 計(jì)算變壓器電抗 ......................................................................................... 26 系統(tǒng)等值網(wǎng)絡(luò)圖 ....................................................................................... 26 短路計(jì)算點(diǎn)的選擇 .................................................................................... 27 短路電流計(jì) 算 ]7][6][2[ ................................................................................ 27 第 2 章 電氣設(shè)備選型 ............................................................................................ 32 斷路器及隔離開關(guān)選擇 ............................................................................. 32 母線選 擇 .................................................................................................. 39 絕緣子和穿墻套管的選擇 ......................................................................... 43 電流互感器的選擇 ..................................................................................... 45 高壓熔斷器的選擇 .................................................................................... 47 避雷器的選擇 ........................................................................................... 48 電容電流計(jì)算 ]2[ ...................................................................................... 49 消弧線圈的選擇 ....................................................................................... 49 結(jié)束語(yǔ) ........................................................................................................................... 50 參考文獻(xiàn) ........................................................................................................................ 51 致謝 ............................................................................................................................... 52 附錄 Ⅰ ： 專業(yè)相關(guān)文獻(xiàn)翻譯 .................................................................. 錯(cuò)誤 !未定義書簽。 中文譯文： ..........................................................................