【正文】 ......................................2 有發(fā)電機(jī)電壓母線接線的主變壓器 .......................................................................................單元接線的主變壓器 .............................................................................................................3 主變壓器形式的選擇 .........................................................................................................................3 數(shù)的選擇 ....................................................................................................................................3 繞組數(shù)量和方式的選擇 ............................................................................................................3 本廠主變壓器的選擇 ........................................................................................................................3第三章發(fā)電廠電氣主接線選擇 ...................................................................................................................5 概 述 ................................................................................................................................................5 主接線的設(shè)計(jì)原則 ...........................................................................................................................5 主接線的設(shè)計(jì)依據(jù) ....................................................................................................................5 主接線設(shè)計(jì)的基本要求 ............................................................................................................6 本廠電氣主接線的選擇 ...................................................................................................................7 主接線方案的預(yù)定 ...................................................................................................................7第四章 短路電流的計(jì)算 .........................................................................................................................9 計(jì)算短路電流的目的： ....................................................................................................................9 電力系統(tǒng)短路電流計(jì)算 ....................................................................................................................9 基本假定 ...................................................................................................................................9 一般規(guī)定 .................................................................................................................................10 限流措施 .................................................................................................................................10 短路計(jì)算點(diǎn)的選擇 ..........................................................................................................................10 短路計(jì)算方法 .................................................................................................................................11 網(wǎng)絡(luò)變換 ..........................................................................................................................................11 計(jì)算步驟 ..........................................................................................................................................12 計(jì)算步驟： .............................................................................................................................12沈陽工業(yè)大學(xué)II第五章 電氣設(shè)備的選擇與校驗(yàn) ...............................................................................................................12 設(shè)計(jì)原則 ..........................................................................................................................................12 一般原則 .................................................................................................................................12 技術(shù)條件 .................................................................................................................................13 母線的選擇 .....................................................................................................................................14 母導(dǎo)體的選擇 .........................................................................................................................14 高壓斷路器的選擇 ..........................................................................................................................17 參數(shù)的選擇 .............................................................................................................................17 型式的選擇 .............................................................................................................................17 對(duì)斷路器具體的選擇和校驗(yàn) .................................................................................................18 隔離開關(guān)的選擇 ..............................................................................................................................19 選擇和校驗(yàn)的項(xiàng)目 ..................................................................................................................19 造型說明 .................................................................................................................................19 電流互感器選擇 ..............................................................................................................................21 參數(shù)和型式的選擇 .................................................................................................................21 按一次額定電壓和額定電流選擇 .........................................................................................21 按準(zhǔn)確度級(jí)及原副邊選擇 .....................................................................................................21 動(dòng)穩(wěn)定和熱穩(wěn)定校驗(yàn) ..............................................................................................................22 電壓互感器選擇 .............................................................................................................................23 電壓互感器參數(shù)及型式的選擇 .............................................................................................23 按一次回路電壓選擇 ....................................................