【正文】 .....................................................................................15 電氣主接線的設計原則和要求 ....................................................................................................15 電氣主接線的設計原則 ........................................................................................................15 電氣主接線設計的基本要求 ................................................................................................16 電氣主接線方案的比較 ................................................................................................................17第四章 短路電流的計算 .........................................................................................................................20 短路電流計算的一般概述 ............................................................................................................20 短路的原因 ............................................................................................................................20 短路的危害 ............................................................................................................................20 短路的類型 ...............................................................................................................................21 短路電流計算...................................................................................................................................21第五章 電氣設備的選擇與校驗 .............................................................................................................26 高壓電器設備選擇的一般原則 ......................................................................................................26 按正常工作條件選擇高壓電氣設備 ....................................................................................26 按短路條件校驗 ....................................................................................................................28 電氣設備的選擇和校驗 ................................................................................................................28 高壓斷路器的選擇和校驗 ....................................................................................................28 低壓隔離開關的選擇和校驗 ................................................................................................29 電流互感器的選擇及校驗 ....................................................................................................30 母線 ........................................................................................................................................31 高壓開關柜的選擇 ................................................................................................................32第六章 導線的選擇與敷設 .....................................................................................................................35 導線選擇的條件 ............................................................................................................................35 電纜型號的含義...............................................................................................................................35 導線截面的選擇 ............................................................................................................................36 電纜的選擇與計算 ........................................................................................................................36第七章 主變壓器的繼電保護 .................................................................................................................39 繼電保護的任務和基本要求 ........................................................................................................39 保護的裝設原則 ............................................................................................................................40 電力變壓器應裝設的保護裝置 ............................................................................................40 保護形式 ................................................................................................................................40 變電所的室內外布置 ............................................................................................................44第二部分 采區(qū)變電所 ...............................................................................................................................46第一章 采區(qū)變電所的負荷統(tǒng)計 .............................................................................................................46第二章 變壓器的選擇 .............................................................................................................................48 變壓器的選擇 ................................................................................................................................48第三章 采區(qū)電纜的選擇 .........................................................................................................................51 電纜型號的確定 ............................................................................................................................51 電纜選擇的基本原則 ...............................................................................................................51 型號的確定 ............................................................................................................................51 電纜截面的選擇 ............................................................................................................................51 采區(qū)變電所 6kv 電源，電纜的選擇 ......................................................................................51 按長時允許電纜流校驗電纜截面： .........................................................................................52 按電壓損失校驗。 ................................................................................................................52 按熱穩(wěn)定條件校驗。 ....................................................................................................60 高壓開關（PB26 改型，ni=100/s） ...................................................................................60 高壓開關，PB26GA 改型 ni2100/S ..................................................................................