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1、本科畢業(yè)設(shè)計(jì)(論文)南方冶金機(jī)械修造廠總降壓變電所及高壓配電系統(tǒng)設(shè)計(jì)摘要一間冶金機(jī)械修造廠如果對(duì)輸配電系統(tǒng)進(jìn)行一個(gè)完善的規(guī)劃,能很好地節(jié)約資金、合理規(guī)劃用地、降低電能損耗、提高電壓質(zhì)量、保證系統(tǒng)的正常運(yùn)行。本論文對(duì)輸配電進(jìn)行全面的設(shè)計(jì),內(nèi)容分四大部分。第一部分先從論文的背景和目的進(jìn)行闡述,然后對(duì)原始資料來進(jìn)行初步的分析,再確定好本論文的設(shè)計(jì)步驟。第二部分確定好冶金廠各部分的負(fù)荷,進(jìn)行精確的計(jì)算,通過無功補(bǔ)償來提高系統(tǒng)的功率因數(shù)減少電能的損耗。根據(jù)負(fù)荷的重要性和負(fù)荷的大小進(jìn)行初步的變壓器選擇和合理的主接線、供電線路的設(shè)計(jì)。第三部分主要是確保系統(tǒng)的安
2、全,首先對(duì)系統(tǒng)進(jìn)行精確的短路計(jì)算,然后根據(jù)所得到的短路電流和沖擊電流進(jìn)行一系列的高低壓設(shè)備的選擇與校驗(yàn),保證系統(tǒng)的正常運(yùn)行。第四部分根據(jù)設(shè)計(jì)的要求,最后進(jìn)行防雷保護(hù)措施的選擇和接地裝置的設(shè)計(jì),增加系統(tǒng)的安全性。在論文的最后還附上設(shè)計(jì)的圖紙和計(jì)算過程。關(guān)鍵詞:負(fù)荷計(jì)算,主接線設(shè)計(jì),短路計(jì)算,配電裝置AbstractAMetallurgicalMachineryfactoryifthetransmissionanddistributionsystemhaveasoundplanning,savingscanbegood,reasonablelandu
3、seplanning,reducingpowerloss,upgradequalityandensurethenormaloperationofsystems.Inthispaper,transmissionanddistributionofacomprehensivedesign,contentisdividedintofourparts.Thefirstpartdiscussedthebackgroundandpurpose,thentherawdatatoconductapreliminaryanalysis,todetermineagoo
4、dstepinthedesignofthisthesis.Thesecondpartofthemetallurgicalhaveplanttoidentifygoodpartoftheload,anaccuratecalculation,throughthereactivepowercompensationsystemtoimprovethepowerfactortoreducethepowerloss.Accordingtoloadtheimportanceandthesizeofareasonableloadthemaincables,pow
5、ersupplylinesandpreliminarydesignofthetransformerchoice.Thethirdpartistoensurethatthesafetysystem,firstofall,thesystemaccurateshort-circuit,andthenbethebasisofthecurrentshort-circuitcurrentandimpactofaseriesofhighandlowvoltageequipmentselectionandvalidationtoensurethenormalop
6、erationofsystems.Thefourthpartofthedesigninaccordancewiththerequirementsoflightningprotectionmeasuresforthefinalselectionandgroundequipmentdesign,increasedsystemsecurity.Inthefinalpapersalsoincludethedesigndrawingsandcalculationprocess.Keywords:Loadcalculation,Mainwiringdesig
7、n,Short-circuitcalculation,DistributionDevice目錄1緒論11.1論文背景及目的11.2論文研究方法11.3供電設(shè)計(jì)的主要內(nèi)容12負(fù)荷計(jì)算與無功功率補(bǔ)償22.1負(fù)荷計(jì)算22.1.1負(fù)荷計(jì)算的意義22.1.2按需要系數(shù)法確定計(jì)算負(fù)荷22.1.36kV負(fù)荷計(jì)算32.1.4NO.1~NO.5變電所380V負(fù)荷計(jì)算32.2無功補(bǔ)償計(jì)算42.2.1確定補(bǔ)償容量42.2.2補(bǔ)償后的功率因素73變壓器選擇與主接線方案的設(shè)計(jì)83.1選擇降壓變壓器83.1.135kV/6kV變壓器的選擇83.1.26kV/380V變壓器的
8、選擇93.2工廠主接線方案的比較103.2.1工廠總降壓變電所高壓側(cè)主接線方式比較103.2.2工廠總降壓變電所低壓側(cè)主接線方式比較10