【正文】 ....................................................................8 主變壓器臺數(shù)的選擇 ............................................................................................................8 主變壓器容量的選擇 ...........................................................................................................8 主變壓器型式的選擇 ............................................................................................................9 主變壓器相數(shù)的選擇 .................................................9 繞組數(shù)的選擇 .......................................................9 主變調(diào)壓方式的選擇 ................................................10 連接組別的選擇 ....................................................10 容量比的選擇 ......................................................10 主變壓器冷卻方式的選擇 ............................................103 短路電流計算 ..............................................................11 概述 .....................................................................................................................................11 短路計算的目的及假設(shè) ......................................................................................................11 短路電流計算的目的 ................................................11 短路電流計算的一般規(guī)定 ............................................11 短路計算基本假設(shè) ..................................................12華北電力大學(xué)科技學(xué)院本科畢業(yè)設(shè)計（論文）2 基準(zhǔn)值 ............................................................12 短路電流計算的步驟 ................................................124 電氣設(shè)備的選擇 ............................................................13 概述 ......................................................................................................................................13 一般原則 ..........................................................13 技術(shù)條件 ..........................................................13 斷路器的選擇 ......................................................................................................................14 按開斷電流選擇 ....................................................14 短路關(guān)合電流的選擇 ................................................14 隔離開關(guān)的選擇 ..................................................................................................................15 高壓熔斷器的選擇 ..............................................................................................................15 按額定電壓選擇 ....................................................15 按額定電流選擇 ....................................................15 互感器的選擇 ......................................................................................................................15 電流互感器的選擇 ..................................................16 電壓互感器的選擇 ..................................................17 母線的選擇 ..........................................................................................................................18 裸導(dǎo)體的選擇條件選擇和校驗 ........................................18 母線及電纜截面的選擇 ..............................................18 支持絕緣子及穿墻套管的選擇 ..........................................................................................19 支持絕緣子的選擇 ..................................................19 穿墻套管的選擇 ....................................................19 高壓熔斷器的選擇 ..............................................................................................................195 電氣總平面布置及配電裝置的選擇 ............................................20 概述 ......................................................................................................................................20 高壓配電裝置的選擇 ..........................................................................................................206 防雷設(shè)計規(guī)劃 ..............................................................24 防雷保護(hù)的設(shè)計 ..................................................................................................................24 主變 中性點放電間隙保護(hù) ..................................................................................................247 主接線比較選擇 ............................................................258 主變?nèi)萘康拇_定計算 ........................................................31 變壓器容量的選擇 ..............................................................................................................31 主變?nèi)萘勘鹊拇_定 ..............................................................................................................319 短路計算 ..................................................................32 計算變壓器各繞組電抗 ......................................................................................................32華北電力大學(xué)科技學(xué)院本科畢業(yè)設(shè)計（論文）3 計算系統(tǒng)及線路阻抗 ..........................................................................................................33 等值網(wǎng)絡(luò) ..............................................................................................................................3310 電氣設(shè)備選擇計算 .........................................................37 斷路器選擇計算 ................................................................................................................37 隔離開關(guān)選擇計算 ............................................................................................................41 經(jīng)濟(jì)性比較 ........................................................................................................................44 110KV、35KV、10KV 側(cè)母線及其 10KV 側(cè)電纜出線選擇計算 ..................................45 110kV 側(cè)母線的選擇 ...............................................45 35kV 側(cè)母線 ......................................................45 支持絕緣子及穿墻套管的選擇 ........................................................................................51 支柱式絕緣子的選擇 ...............................................51 穿墻套管的選擇 ...................................................52 高壓熔斷器的選擇 ............................................................................................................52 電流互感器的選擇計算 ..................................................................................