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《某冶金機(jī)械廠總降壓變電所及高壓供電系統(tǒng)設(shè)計(jì)(doc畢設(shè)論文)》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、某冶金機(jī)械廠總降壓變電所及配電系統(tǒng)設(shè)計(jì)摘要隨著我國國民經(jīng)濟(jì)的飛速發(fā)展,工業(yè)對電力的需求也越來越迫切。隨著中國工業(yè)規(guī)模的不斷擴(kuò)大,對電力供應(yīng)的安全性、可靠性提出了更高的要求,因此電力系統(tǒng)與用戶直接關(guān)聯(lián)的供電系統(tǒng)尤為重要。作為供電系統(tǒng)的主要組成部分,電氣設(shè)備的質(zhì)量及其性能的先進(jìn)性是決定供電系統(tǒng)安全可靠運(yùn)行的前提條件之一。本設(shè)計(jì)根據(jù)該冶金機(jī)械廠的相關(guān)資料和實(shí)際情況,對該廠的總降壓變電所和高壓供電系統(tǒng)進(jìn)行設(shè)計(jì)。本設(shè)計(jì)首先根據(jù)工廠提供的資料對工廠的負(fù)荷情況進(jìn)行了計(jì)算,根據(jù)負(fù)荷情況對變壓器的容量和臺(tái)數(shù)進(jìn)行了選擇。該
2、廠電源由某變電所以35kV雙回路架空線引出,本設(shè)計(jì)選擇在該廠設(shè)立總降壓變電所先將電壓降為廠區(qū)供電電壓10kV,在由各車間變電所降為負(fù)荷所需電壓。為保證供電系統(tǒng)的可靠性,總降壓變電所采用單母線分段式接線方式,廠區(qū)供電系統(tǒng)采用放射式接線方式。通過計(jì)算,本設(shè)計(jì)對各變電所的主要電氣設(shè)備、電纜和母線進(jìn)行了選擇和校驗(yàn),對一次側(cè)主要設(shè)備進(jìn)行了繼電保護(hù)整定,對避雷和接地裝置進(jìn)行了選擇。關(guān)鍵詞:變電所;供電系統(tǒng);電氣設(shè)備TitleADesignofHighVoltagePowerSupplySystemandSubsta
3、tionforOneMetallurgicalMachineryPlantAbstractWiththerapiddevelopmentofChinesenationaleconomy,demandofindustrialelectricityisalsomoreurgent.WiththeconstantexpansionofChineseindustry,thesecurityofelectricitysupply,higherrequirementsforreliability,powersyst
4、emandtheuserthereforedirectlyrelatedtothepowersupplysystemisparticularlyimportant.Asamajorcomponentofpowersupplysystem,electricalequipmentqualityandperformanceofadvancedpowersupplysystemistodeterminethesafeandreliableoperationofoneoftheprerequisites.Thed
5、esignofMetallurgicalMachineryPlantundertherelevantinformationandcircumstances,theplant'sgeneralstepdownsubstationandhighvoltagepowersupplysystemdesign.First,thedesignofinformationprovidedundertheplantloadfactoryconditionswerecalculated,accordingtoloadsit
6、uationonthetransformercapacityandnumberswereselected.Theplantispoweredbyasubstationto35kVdoublecircuitoverheadlineextraction,theestablishmentofthedesignchoicesintheplantreducedthetotalvoltagestep-downsubstationplantfirstsupplyvoltage10kV,theloadisreduced
7、bytheplantsubstationrequiredvoltage.Toensurethereliabilityofpowersupplysystem,thetotalstep-downsubstationsinglebussegmentalwiring,thefactorypowersupplysystemwithradialterminals.Bycalculating,thedesignofthemainelectricalsubstationequipment,cablesandbussel
8、ectionandvalidationcarriedoutonthelightningprotectionandgroundingdevicesofchoice.Keywords:Substation;PowerSystem;ElectricalEquipment目次1緒論11.1工廠供電的意義及要求11.2工廠供電設(shè)計(jì)的一般原則21.3設(shè)計(jì)的具體內(nèi)容21.4工廠原始資料32工廠的電力負(fù)荷及其計(jì)算42.1工廠的電力負(fù)荷42.2車間計(jì)算負(fù)荷的