【正文】 Abstract ........................................................................................................................... II 目錄 ...............................................................................................................................III 1 前言 .............................................................................................................................. 1 .............................................................................................................. 2 性質(zhì)分析 ........................................................................................................... 2 自然條件及地質(zhì)條件分析 .................................................................................. 2 ........................................................................................ 3 負荷統(tǒng)計表 ....................................................................................................... 3 主變壓器的選擇 ................................................................................................ 4 主接線的確定 .................................................................................................... 5 ...................................................................................................................... 6 短路電流計算目的 ............................................................................................. 6 假設(shè)條件和原則 ................................................................................................ 6 系統(tǒng)簡化阻抗圖 ................................................................................................ 6 短路電流的計算方法 ......................................................................................... 6 各短路點參數(shù)的計算 .......................................................................................... 7 參數(shù)的確定 ............................................................................................... 7 變壓器電抗標(biāo)么值的計算 ......................................................................... 7 進出線路電抗的計算 ................................................................................ 7 最大運行方式下各短路點電流的計算 ...................................................... 8 最小運行方式下各短路點電流的計算 .....................................................10 短路電流計算數(shù)據(jù)表 ...............................................................................10 .................................................................................................................. 11 220kV 高壓側(cè)母線 及主變饋線的選擇 ................................................................ 11 110kV 中壓母線及主變饋線的選擇 ...................................................................12 10kV 低壓側(cè)母線的選擇 ....................................................................................13 220kV 高壓側(cè)進線的選擇 ..................................................................................14 110kV 中壓側(cè)出線的選擇 ..................................................................................14 10kV 低壓側(cè)出線的選擇 ....................................................................................15 電纜的選擇 .......................................................................................................16 ..........................................................................................................18 斷路器的選擇 ...................................................................................................18 選擇原則 .................................................................................................18 220kV 進線及變壓器高壓側(cè)斷路器的選擇 ..............................................18 220kV 樞紐 變電所設(shè)計 IV 變壓器中壓 110kV 側(cè)斷路器的選擇 ........................................................19 變壓器低壓 10kV 側(cè)斷路器的選擇 ..........................................................19 110kV 側(cè)出線路上斷路器的選擇 .............................................................20 10kV 側(cè)出線路上斷路器的選擇 ...............................................................20 隔離開關(guān)的選擇 ...............................................................................................21 220kV 進線及變壓器高壓側(cè)隔離開關(guān)的選擇 ...........................................21 變壓器中壓 110kV 側(cè)隔離開關(guān)的選擇 ....................................................21 變壓器低壓 10kV 側(cè)隔離開關(guān)的選擇 ......................................................22 110kV 側(cè)出線路上隔離開關(guān)的選擇 .........................................................22 10kV 側(cè)出線路上隔離開關(guān)的選擇 ...........................................................23 電壓互感器的選擇 ............................................................................................23 選擇原則 ................................................................................................23 選擇結(jié)果 ................................................................................................24 電流互感器 的選擇 ............................................................................................24 選擇原則 ................................................................................................24 選擇結(jié)果 ................................................................................................25 避雷器的選擇 ...................................................................................................26 選擇原則 ................................................................................................26 選擇結(jié)果 ................................................................................................26 電力電容器的選擇 .............................................................................................27 選擇原則 ................................................................................................27 選擇結(jié)果 ................................................................................................27 所用變壓器的選擇 ............................................................................................28 選擇原則 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