【正文】
題 目 : 智能樓宇電氣保護(hù)與接地方案設(shè)計(jì) 學(xué) 院: 機(jī)械與電氣工程 學(xué)院 專 業(yè) : 電氣工程及其自動(dòng)化 年 級(jí) : 姓 名: 目錄 第一章 緒論 ................................................................................................................. 3 第二章 電氣設(shè)備接地和接零作用分析 .......................................................................... 4 保護(hù)接地的作用 ................................................................................................... 4 保護(hù)接零作用 ...................................................................................................... 5 重復(fù)接地的作用 ................................................................................................... 6 過(guò)電壓保護(hù)作用 ................................................................................................... 6 防靜電接地作用 ................................................................................................... 6 工作接地的作用 ................................................................................................... 7 隔離接地的作用 ................................................................................................... 7 第三章 安全用電 .......................................................................................................... 7 觸電的原因與觸電的方式 ..................................................................................... 7 常用的安全用電防護(hù)措施 ..................................................................................... 8 接地電阻測(cè)量方法 ............................................................................................... 8 第四章 接地系統(tǒng)分析 ................................................................................................. 10 TN- C系統(tǒng) ....................................................................................................... 10 TN- S系統(tǒng) ....................................................................................................... 12 TN- C- S系統(tǒng) .................................................................................................. 13 TT 系統(tǒng) ............................................................................................................. 14 IT 系統(tǒng) .............................................................................................................. 14 第五章 接地措施分析 ................................................................................................. 15 接地分類 ........................................................................................................... 15 接地裝置的裝設(shè) ................................................................................................. 20 第六章 漏電保護(hù)器 ...................................................................................................... 22 安裝漏電保護(hù)器的目的與要求 ........................................................................... 22 漏電保護(hù)器的功能 ............................................................................................ 22 漏電保護(hù)器的分類與工作原理 ............................................................................ 23 漏電保護(hù)器的技術(shù)指標(biāo)與型號(hào) ........................................................................... 23 第七章 智能建筑電氣裝置內(nèi)各種電氣系統(tǒng)接地 .......................................................... 24 第八章 接地措施及接地裝置的選擇 ....................................................................... 25 接地系統(tǒng)選擇 ................................................................................................... 25 接地措施及接地裝置的選擇 .............................................................................. 25 接地電阻選擇 ................................................................................................... 25 等電位聯(lián)接 ....................................................................................................... 25 參考文獻(xiàn) ........................................................................................................................ 28 總結(jié) ............................................................................................................................... 28 致謝 ............................................................................................................................... 30 1 智能樓宇的電氣保護(hù)與接地的方案設(shè)計(jì) 摘要 隨著現(xiàn)代社會(huì)的發(fā)展,智能樓宇的規(guī)模不斷擴(kuò)大,并且其內(nèi)部各種電器的使用日趨增多,尤其是計(jì)算機(jī)網(wǎng)絡(luò)信息技術(shù)的普及,建筑物越來(lái)越多采用各種信息化的電氣設(shè)備,這給智能樓宇的電氣保護(hù)和接地帶來(lái)了一些新問(wèn)題。 通過(guò)對(duì)幾種供電接地系統(tǒng)的概括介紹, 分析和說(shuō)明, 篩選出適合智能樓宇的供電接地系統(tǒng),并對(duì)其所采取的各類接地措施作了較為詳盡的說(shuō)明與分析,對(duì)智能樓宇應(yīng)采取的電氣保護(hù)與接地方法提出了適當(dāng)?shù)慕ㄗh。 在傳統(tǒng)的低壓供電系統(tǒng)中主要強(qiáng)調(diào)過(guò)載、短路保護(hù),其目的是保護(hù)用電設(shè)備、供電線路不受損壞,近 來(lái),已提出了人身安全、消防安全的觀點(diǎn)。所以目前對(duì)于智能樓宇的電氣設(shè)計(jì)首先考慮到人身安全。 【關(guān)鍵詞】 TN- S接地系統(tǒng) , 等電位連接 , 重復(fù)接地 , 電位基準(zhǔn)點(diǎn) 2 Abstract With the development of modern society, expanding the scale of the intelligent building, and the use of its internal various appliances increasing, especially the popularization of puter work information technology, electrical equipment, building more and more used in a variety of informationization for intelligent building electrical protection and earthing brings some new the overview of several power supply grounding system, screen is suitable for the power supply grounding system for intelligent building, and its all kinds of earthing measures should be taken to made a more detailed description and analysis, the intelligent building electrical protection and earthing methods should be taken to appropriate Suggestions are put traditional low voltage power supply