【正文】 ....................................4 負(fù)荷計算示意圖 ................................................................................................................4 負(fù)荷計算基本公式和舉例 ................................................................................................5 變壓器的選擇 .............................................................8 供電系統(tǒng)中的功率損耗 .....................................................9 無功功率補(bǔ)償 ............................................................10 提高功率因數(shù)的意義 ......................................................................................................12 提高功率因數(shù)的方法 ......................................................................................................12 電力電容器的安裝方式 ..................................................................................................13 電容器補(bǔ)償量的計算 ......................................................................................................13 全廠計算負(fù)荷 ..................................................................................................................13第 3 章 全廠總供電系統(tǒng)設(shè)計 ....................................................................................................15 總配電所的主接線設(shè)計的原則和意義 ......................................15 電氣主接線的基本方式 ..................................................15 本設(shè)計的主接線的基本方式 ..............................................16VIII / 51 一次接線系統(tǒng)圖 ........................................................17第 4 章 短路電流計算 ................................................................................................................18 短路電流計算的意義和方法 ..............................................18 短路計算 ..............................................................18 繪制短路電流計算示意圖 ..............................................................................................18 短路電流及容量的計算 ..................................................................................................19 最小、最大運(yùn)行方式下的短路計算 ..............................................................................22 短路計算表 ......................................................................................................................22第 5 章 電氣設(shè)備、電纜、母線的選擇 ....................................................................................24 按正常工作條件下選擇 ..................................................24 按工作電壓選擇 ..............................................................................................................24 按工作電流選擇 ..............................................................................................................24 按斷流能力選擇 ..............................................................................................................25 按短路條件校驗 ........................................................25 開關(guān)設(shè)備及母線電纜的校驗 ..............................................27第 6 章 繼電保護(hù)整定及二次保護(hù) ............................................................................................29 概述 ..................................................................29 總配電所的繼電保護(hù)裝置 ................................................29 總配電所保護(hù)裝置的作用 ..............................................................................................29 對繼電保護(hù)裝置的基本要求 ..........................................................................................29 繼電保護(hù)的靈敏系數(shù) ....................................................30 電力變壓器保護(hù)裝置的配置要求 ..........................................30 變壓器過電流保護(hù)的整定計算 ............................................31 過電流保護(hù)動作電流的整定計算 ..................................................................................32 過電流保護(hù)動作時間的整定計算 ..................................................................................33 過電流保護(hù)靈敏系數(shù)的校驗 ..........................................................................................33 變壓器電流速斷保護(hù)的整定計算 ..........................................33 電流速斷保護(hù)動作電流的整定計算 ..............................................................................33 電流速斷保護(hù)靈敏系數(shù)的校驗 ......................................................................................33IX / 51 變壓器過負(fù)載保護(hù)的整定計算 ............................................34 過負(fù)荷保護(hù)動作電流的整定計算 ..................................................................................34 過負(fù)荷保護(hù)動作時間得整定計算 ..................................................................................34 變壓器過負(fù)載保護(hù)的整定計算 ............................................34 過電流保護(hù)動作電流的整定計算 ..................................................................................35 過電流保護(hù)動作時間 ......................................................................................................35 過電流保護(hù)靈敏系數(shù)的校驗 ..........................................................................................35第 7 章 接地與防雷設(shè)計 ............................................................................................................35 接地 ..................................................................36 防雷 ..................................................................37 防雷裝置 ...........................................................................................................................37 防雷措施 ..........................................................................................................................37第 8 章 結(jié)論 ................................................................................................................................40致謝 ....................................................................................................................................................41參考文獻(xiàn) ............................................................................................................................................42附錄 ....................................................................................................................................................431 / 51第 1 章 緒論 工廠供電意義和要求眾所周知，電能是現(xiàn)代工業(yè)生產(chǎn)的主要能源和動力。電能既易于由其它形式的能量轉(zhuǎn)換而來，又易于轉(zhuǎn)換為其它形