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1生活垃圾焚烧发电项目电气设备介绍IntroductionofelectricalequipmentsofMSWpowerplant21.1主要电气设备Mainelectricalequipments为了满足用电设备对电力的要求和保证电力系统运行的安全稳定和经济性，发电厂电气部分的主要工作是启、停机组，调整负荷，切换设备和线路，不断监视主要设备的运行，发生异常和故障时及时处理等。以上所有的工作都是靠操作主要电气设备来完成的。本厂主要电气设备如下：Inordertosatisfytheequipment’srequirementtopowerandthesafetyandstabilityrunningoftheelectricenergysystemandtheeconomicbenefit,theprioritymissionoftheelectricalsystemis,startandstoptheunit,adjusttheload,switchbetweenequipmentandline,constantsurveymajorequipment,quicklyreacttofailureorunusualsituation,etc.Theabovemissionsarecompletedbyoperationofmajorelectricalequipment.Themainelectricalequipmentinthisplantasfollow:1.1.1汽轮发电机发电机是根据电磁感应原理而工作的一种旋转电气设备，它将机械能转变成电能。它与汽轮机直接耦合传动。发电机旋转方向从汽轮机端看为顺时针方向。Generatorisonekindofrotateelectricalequipmentwhichfollowstheruleofelectromagneticinduction,transferringmechanicenergyintoelectricenergy.tdirectlycouplestotheturbineandrotates.Thedirectionofgeneratorrotatingisclockwiseseenfromtheturbineend.3型号powerfactormodelQFW-7-26600V额定功率ratedpower7000kW功率因数powerfactor（COSφ）0.8额定定子电压ratedstatorvoltage6600V额定定子电流ratedstatorcurrent765A额定转速ratedrotationspeed3000r/min极数numberofpolar2相数numberofphase3定子接法statorconnectiontypeY1.1.2柴油发电机柴油发电机平时处于备用状态，当发生全厂停电事故时，自动控制系统会自动隔离厂用电母线和事故保安段母线，同时发出信号命令柴油发电机启动，柴油发电机自带控制系统，可以在10-15s内自动完成柴油启动、调速、升压、合闸一系列的过程，供电给事故保安段母线，维持基本的设备运转，保障锅炉和汽机及其他辅助设备的安全停机。Itisusuallyinbackupstatus.Whentheplantisunderemergencyshutdown,theautocontrolsystemwillisolatetheplantsupplybusbarandthesecuritysection,atthesametimesendsoutsignaltocommandthedieselgeneratortostart,adjustspeed,boostuppressure,shutvalveandseriesofaction,andsupplypowertosecuritysection,keepbasicequipmentrunningin10to15second,guaranteeingthesafetyshutdownofboilerandturbineandotherauxiliaryequipments.41.1.3电动机电动机是根据电磁感应原理工作的一种旋转电气设备，它将电能转化为机械能，拖动电厂风机、泵类、压缩机等机械。根据电厂工艺的要求，其中一次风机、二次风机、引风机、给水泵和凝结水泵等设备采用变频调速控制，其拖动电机也采用相应的变频电机。Motorisakindofrotatingelectricequipmentwhichfollowstherulesofelectromagneticinduction.Ittransferselectricenergytomechanicalenergy,drivingfans,pumps,compressorsandothermachinesintheplant.Accordingtothetechnicalrequirement,primaryfan,secondaryfan,induceddraftfan,waterfeedpumpandcondensingwaterpumpadoptfrequencycontrol,theirmotorsadoptconvertermotorsincorrespondence.高压电动机Highvoltagemotor低压电动机Lowvoltagemotor51.1.4主变压器Maintransformer变压器是一种静止电器，它利用电磁感应原理，把一种电压、电流的交流电能变成为同频率的另一种电压、电流的交流电能。Transformerisastaticappliance.Itfollowstherulesofelectromagneticinduction,makesonekindofACpowerintoanotherkindwithsamefrequencybutdifferentvoltageandcurrent.油浸式主变压器Oil-immersedmaintransformer1.1.5厂用变压器Planttransformer厂用变压器是专门给电厂自己供电用的。Transformerfactoryisspecializedforpowerplanttheirpowersupply.三相环氧树脂浇注干式变压器three-phaseepoxyresinplacingdrytransformer6型号ModelSCB10-2000/6.6额定容量Ratedcapacity2000KVA频率Frequency50Hz一次电压Primaryvoltage6.6KV±2×2.5%二次电压Secondaryvoltage0.4KV相数Numberofphase3一次电流Primarycurrent175A二次电流Secondarycurent2886.8A冷却方式CoolingtypeAF1.1.6变压器保护设备Transformerprotectiondevice变压器保护装置是集保护、监视、控制、通信等多种功能于一体的电力自动化高新技术产品，是构成智能化开关柜的理想电器单元。Thetransformerprotectiondeviceissetprotection,monitoring,control,communicationandotherfunctionsintheintegrationofelectricpowerautomationhigh-techproducts,aretheidealintelligentswitchgearelectricalunit.1.1.733kV高压柜33kVhighvoltagecabinet7开关柜本体Thebodyofswitchcabinet1型式TypeKYN61-40.52额定电压Ratedvoltage333最高运行电压Maximumrunningvoltage384额定电流Ratedcurrent6305相数Numberofphases36额定频率Ratedfrequency50HZ7额定动稳定电流Ratedmotionstabilizedcurrent808热稳定电流（有效值）Hotstabilizedcurrent(virtualvalue)31.59热稳定电流持续时间Continuingtimeofhotstabilizedcurrent4S10一分钟工频耐受电压（有效值）Voltagetoleranceunder1minuteworkingfrequency(virtualvalue)主绝缘对地Maininsulatetowardground95断口间绝缘Insulatebetweencuts11011雷电冲击水平（全波、峰值）Classofthunderstrike(fullwave,peak)主绝缘对地Maininsulatetowardground185断口间绝缘Insulatebetweencuts21512冷却方式Wayofcooldown自冷Selfcooldown1.1.86.6kV高压柜6.6kVhighvoltagecabinet8按照本厂使用需要，6.6kV配电系统可以装备KYN28A-12型中置移开式铠装金属封闭开关柜和XGN2-12固定式金属封闭式开关柜。Accordingtothedemandofthisplant,the6.6kVpowerdistributionsystemhasKYN28A-12typecenterwithdrawingmetalshieldedclosedswitchcabinetsandXGN2-12fixedmetalshieldedclosedswitchcabinets.KYN28A-12XGN2-121.1.9低压配电柜Lowvoltagepowerdistributioncabinet本厂主厂房低压配电室需配备MNS型低压抽屉式开关柜，对厂用电源、厂用备用电源、事故保安电源进行分配、切换、控制、监视和保护，是全厂厂用电配电中心。ThelowvoltagepowerdistributionhouseofthemainplantbuildinghasMNStypelowvoltagewithdrawingcabinet,todistribute,switch,control,surveyandprotecttheplantpowersupply,plantpowerbackup,emergencysecuritypower.Itisthepowerdistributioncenterofthewholeplantuse.91.1.10现场动力箱Localpowerbox按照本厂使用需要和功能的不同，在主厂房其他地方和其他车间分布着检修箱，现场动力箱，现场控制箱，对现场设备进行配电和控制。Accordingtothedifferenceofneedandfunction,setuprepairbox,localpowerbox,localcontrolboxatotherplacesofmainbuildingandotherworkshops,todistributepowerandcontrolthelocalequipments.1.1.11发电机保护柜Protectionboxofgenerator发电机是电厂最重要和贵重的电气设备，发电机的安全运行直接影响电厂电气系统的安全。为了保护发电机和限制事故的扩大，根据发电机的故障和不正常工作状态，本厂配置了发电机保护柜（一台发电机一台），并配备必要的保护功能。Thegeneratoristhemostimportantandexpensiveelectricalequipmentofthepowerplant.Thesafetyrunningofgeneratordirectlyaffectstheelectricalsystem