機(jī)械工廠變配電所的設(shè)計(jì)畢業(yè)設(shè)計(jì)

1、wd文檔可編輯機(jī)械工廠變配電所的設(shè)計(jì)機(jī)械工廠變配電所的設(shè)計(jì)摘要機(jī)械工廠供電的目的是從電力系統(tǒng)取得電能，經(jīng)過(guò)合理的傳輸，變換，分配到機(jī)械工廠車間中的每一個(gè)用電設(shè)備上以供使用。隨著機(jī)械工業(yè)電氣自動(dòng)化技術(shù)的發(fā)展以及工廠用電量的迅速增長(zhǎng)，使工廠對(duì)電能的質(zhì)量，供電的可靠行以及技術(shù)經(jīng)濟(jì)指標(biāo)等要求也日益提高。工廠供電系統(tǒng)是由工廠總降壓變電所（高壓變電所），高壓配電系統(tǒng)，車間變電所，低壓配電系統(tǒng)及用電設(shè)備組成。本設(shè)計(jì)對(duì)一個(gè)大型機(jī)械工廠的供電系統(tǒng)進(jìn)行設(shè)計(jì)

2、，主要包括進(jìn)線電壓等級(jí)的選擇；總降壓變電所主接線的設(shè)計(jì)；通過(guò)負(fù)荷計(jì)算確定主變壓器及各車間配電變壓器的型號(hào)；用標(biāo)幺值法及有歐姆法進(jìn)行了短路計(jì)算，進(jìn)而對(duì)總降壓變電所、高壓配電線路、車間變電所及低壓配電線路中的電氣設(shè)備進(jìn)行選擇與校驗(yàn)，例如斷路器、隔離開關(guān)、電流互感器、電壓互感器。本文也對(duì)二次保護(hù)回路進(jìn)行了簡(jiǎn)單設(shè)計(jì)。本設(shè)計(jì)在確定高壓側(cè)接線方案及對(duì)高壓側(cè)設(shè)備選擇時(shí)進(jìn)行了較為詳細(xì)的技術(shù)經(jīng)濟(jì)比較，力求達(dá)到經(jīng)濟(jì)合理可靠。因?yàn)楣╇娫O(shè)計(jì)是否完善，不僅影響工

3、廠的基本建設(shè)投資、運(yùn)行費(fèi)用和有色金屬消耗量，而且也反映到工廠供電的可靠性和工廠的安全生產(chǎn)上，它與企業(yè)的經(jīng)濟(jì)效益、設(shè)備和人身安全等是密切相關(guān)的。關(guān)鍵詞：變電所；主接線；設(shè)備選擇；二次繼電保護(hù)關(guān)鍵詞：變電所；主接線；設(shè)備選擇；二次繼電保護(hù)wd文檔可編輯目錄摘要............................................................................................

4、.........................................IAbstract......................................................................................................................................II1緒論...............................

5、..........................................................................................................11.1課題的意義.........................................................................................................

6、.........11.2課題研究概述..............................................................................................................11.3本課題的設(shè)計(jì)任務(wù)與目標(biāo)............................................................................

7、..............22負(fù)荷計(jì)算及功率補(bǔ)償.............................................................................................................42.1負(fù)荷調(diào)查..............................................................................

8、........................................42.1.1工廠總平面圖...................................................................................................42.1.2工廠負(fù)荷情況.........................................................

9、..........................................52.1.3供電電源情況...................................................................................................52.1.4工廠自然條件.......................................................

10、............................................52.1.5電費(fèi)制度...........................................................................................................62.2按需要系數(shù)法確定計(jì)算負(fù)荷...........................................

11、...........................................62.2.1基本公式...........................................................................................................62.2.2多組用電設(shè)備計(jì)算負(fù)荷的確定.........................................

12、..............................72.3無(wú)功功率補(bǔ)償..............................................................................................................92.3.1無(wú)功功率補(bǔ)償?shù)囊饬x.......................................................

13、................................92.3.2無(wú)功功率的補(bǔ)償方式.....................................................................................102.3.3無(wú)功功率補(bǔ)償計(jì)算.........................................................................

14、................103供電電壓及總降壓變電所主電路的確定...........................................................................133.1總降壓變電所主電路...............................................................................................

15、.133.1.1總降壓變電所主電路的分類.........................................................................133.1.2供電電源及總降壓變電所主接線方案.........................................................153.2經(jīng)技術(shù)經(jīng)濟(jì)比較確定總降壓變電所主接線方案......................

16、..............................163.2.1三個(gè)方案的優(yōu)缺點(diǎn)分析.................................................................................163.2.2三個(gè)方案35kV高壓線路的選擇及電壓損耗計(jì)算......................................163.2.3方案的技術(shù)經(jīng)濟(jì)分析.........

17、............................................................................193.3.4總降壓變電所電氣主接線的設(shè)計(jì).................................................................214高壓電氣設(shè)備的選擇及二次回路設(shè)計(jì).......................................