【正文】 蘭州交通大學(xué)畢業(yè) 設(shè)計(jì)（論文） I 摘 要 本設(shè)計(jì)為蘭州鐵路局下西院住宅小區(qū) 12 號(hào)樓照明供配電系統(tǒng)設(shè)計(jì)。設(shè)計(jì)負(fù)荷等級(jí)為三級(jí)，進(jìn)線電壓為 380/220V，戶用電負(fù)荷為 6 千瓦 。設(shè)計(jì)內(nèi)容包括：照度計(jì)算、負(fù)荷計(jì)算、導(dǎo)線及其截面的選擇、低壓斷路器電流整定、設(shè)備制作及安裝、等電位聯(lián)接安裝及防雷與接地系統(tǒng)設(shè)計(jì)。 本設(shè)計(jì) 采用單位容量法進(jìn)行照度計(jì)算， 采用 需用系數(shù)法進(jìn)行負(fù)荷計(jì)算，按導(dǎo)線長(zhǎng)期允許溫升和電壓損失選擇導(dǎo)線截面，按線路最大工作電流和線路保護(hù)選擇低壓斷路器。照明回路和插座回路分別由不同回路供電，并在插座回路安裝剩余電流保護(hù)器。按三類防雷建筑物進(jìn)行防雷 設(shè)計(jì)，接地采用 TN— S 系統(tǒng)，并設(shè)計(jì)總等電位聯(lián)結(jié)和局部等電位聯(lián)結(jié)系統(tǒng)。 設(shè)計(jì)符合國(guó)家相關(guān)技術(shù) 規(guī)程 規(guī)范 要求 ，設(shè)備選型合理，滿足使用功能 要求 ，能較好地指導(dǎo)施工。 關(guān)鍵詞： 住宅； 照明； 負(fù)荷計(jì)算； 供配電系統(tǒng)； 防雷 蘭州交通大學(xué)畢業(yè)設(shè)計(jì)（論文） II Abstract The design is entitled with electrical illumination design on the 12th residential building located in Xiaxi Courtyard of Lanzhou Railway Bureau. The load level of the project is designed as the 3rd hierarchy, and input voltage level is presented by 380/220V, and household load is designed as 6kW. The design contents include illumination calculation, load calculation, and the selection of circuits and cross sections, and the current setting of low voltage breaker, and equipments making and installation, and equiotential bonding, and as well as lighting protection and grounding system and et al. Firstly, unit capacity method is applied to implement illumination calculation, and the needed coefficient method is applied to implement the load calculation, and the cross sections of the circuits are selected according to longterm allowable temperature rise and voltage loss, and the lowvoltage breakers are selected according to the maximum working current and line protection conditions. Socket and lighting circuits are arranged in different supply loop, and leakage protection breaker is applied in socket loop. Lighting protection with the 3rd level is designed in accordance with specifications, and grounding system adopts TNS system, and general equipotential connection, togenther local equipotential connection is designed. The overall design accords with the relevant technical regulation requirements. Equipments selection is reasonable so as to better meet the applicable functions, and be able to better guide the construction. Key words： Residential， Illumination， Load calculation， Supply and distribution system， Thunder protection 蘭州交通大學(xué)畢業(yè) 設(shè)計(jì)（論文） III 目 錄 摘 要 ..................................................................................................................................... I Abstract ...................................................................................................................................... II 1 緒論 ........................................................................................................................................ 1 工程背景 ..................................................................................................................... 1 設(shè)計(jì)范圍 ..................................................................................................................... 1 設(shè)計(jì)依據(jù) ..................................................................................................................... 1 設(shè)計(jì)目標(biāo) ..................................................................................................................... 1 本文的主要工作 ......................................................................................................... 2 2 照明平面圖 ............................................................................................................................ 3 單元照明平面圖設(shè)計(jì) ................................................................................................. 3 照度確定 .......................................................................................................... 3 光源和燈具的選擇 .......................................................................................... 3 單位容量法計(jì)算各房間負(fù)荷 .......................................................................... 4 開關(guān)的選擇 ...................................................................................................... 6 單元插座平面圖設(shè)計(jì) ................................................................................................. 7 插座的配置 ...................................................................................................... 7 插座的選擇 ...................................................................................................... 8 3 照明配電系統(tǒng)圖 .................................................................................................................. 10 照明負(fù)荷計(jì)算 ........................................................................................................... 10 需用系數(shù)法 .................................................................................................... 10 負(fù)荷計(jì)算 ........................................................................................................ 11 導(dǎo)線、電纜及低 壓電器的設(shè)計(jì) ............................................................................... 13 導(dǎo)線、電纜及低壓電器設(shè)計(jì)原則 ................................................................ 13 導(dǎo)線、電纜及低壓電器選擇 ..................................................................