【正文】 nding the form of thunder and lightning and determining the way of lightning protection and equipment paper aims at dealing with reasonable designs and applications in the load calculation and electrical equipment are chosen on based on the principle of safety and economy. The circuits should be reasonably designed. Lightning protection and earthing connection tackle the problem of direct lightning flash and lightning wave to ensure the safety of the building and people.Key words: Load calculation；Reactive Power Compensation；Equipment Selection；Electrical Lighting；Lightning Protection. 畢業(yè)設(shè)計說明書（畢業(yè)論文）目錄 摘 要 ........................................................................................................................................ II Abstract .................................................................................................................................... III第一章 緒論 ....................................................................................................................... 1 建筑電氣的研究領(lǐng)域 ................................................................................................. 1 樓宇電氣自動化的現(xiàn)狀 ............................................................................................. 1 樓宇電氣自動化的意義 ............................................................................................. 2 樓宇電氣自動化的展望 ............................................................................................. 3第二章 照明設(shè)計 ............................................................................................................... 4 照明方式 ..................................................................................................................... 4 照明種類的選擇 ......................................................................................................... 4 ...................................................................................................................... 4 照明方式 ..................................................................................................................... 6 ...................................................................................................................... 7 利用系數(shù)法 ...................................................................................................... 7 應(yīng)急照明 ..................................................................................................................... 8 ................................................................................................... 8 設(shè)計要求 .......................................................................................................... 8第三章 負荷計算及設(shè)備選型 .................................................................................................. 9 電力負荷級別及其供電要求 ..................................................................................... 9 ........................................................................................................... 9 二級負荷 .......................................................................................................... 9 三級負荷 ........................................................................................................ 10 辦公室的電氣主接線 ............................................................................................... 10 電氣主接線方式 ............................................................................................ 10 單母線不分段接線 ........................................................................................ 10 單母線分段接線 ............................................................................................ 11 本辦公室的電氣主接線 ................................................................................ 13畢業(yè)設(shè)計說明書（畢業(yè)論文） 負荷計算 ................................................................................................................... 13 負荷計算的內(nèi)容和目的 ................................................................................ 13 需要系數(shù)法 .................................................................................................... 14 尖峰電流 ........................................................................................................ 16 無功功率補償 ................................................................................................ 17 短路電流的計算 ....................................................................................................... 21 短路故障的原因 ............................................................................................ 21 短路故障的種類 ............................................................................................ 21 三相短路電流 ................................................................................................ 21 辦公樓三相短路電流的計算 ........................................................................ 22 .................................................................................................................... 24 低壓斷路器 .................................................................................................... 24 低壓熔斷器 .................................................................................................... 25 ..................................................................................................... 27 變壓器的選擇 ................................................................................................ 31 .............................................................................................. 31第四章 防雷接地 .................................................................................................................... 33 雷電的產(chǎn)生和危害 ................................................................................................... 33 建筑物防雷等級分類 ............................................................................................... 33 防雷設(shè)備 ................................................................................................................... 34 接地 ........................