35kv变电所及配电线路设计 毕业设计

35KVA1A0A2A3A4A0A5A6A7A81摘要随着现代文明的发展与进步，社会生产和生活对电能供应的质量和管理提出了越来越高的要求。作为电能传输与控制的中间枢纽，变电所必须改变传统的设计和控制模式，才能适应现代电力系统、现代化工业生产和社会生活的发展趋势。35KV工厂供电设计包括负荷的计算及无功功率的补偿；变电所主变压器台数和容量、型式的确定；变电所主接线方案的选择；进出线的选择；短路计算和开关设备的选择；二次回路方案的确定及继电器保护的选择和整定；防雷保护与接地装置的设计；车间配电线路布线方案的确定；线路导线及其配电设备和保护设备的选择；以及电气照明的设计和电路图的绘制。关键词35KV变电所,G3配电线路设计与选择G335KVA1A0A2A3A4A0A5A6A7A82ABSTRACTALONGWITHTHEDEVELOPMENTOFMODERNCIVILIZATIONANDPROGRESS,SOCIALPRODUCTIONANDTHELIFETOTHEELECTRICPOWERSUPPLYOFQUALITYANDMANAGEMENTPUTFORWARDMOREANDMOREHIGHDEMANDASWITHTHECONTROLOFTHEPOWERTRANSMISSIONPROJECT,MUSTCHANGETHESUBSTATIONOFTRADITIONALDESIGNANDCONTROLMODETOADAPTTOTHEMODERNELECTRICPOWERSYSTEM,MODERNINDUSTRIALPRODUCTIONANDTHEDEVELOPMENTTRENDOFSOCIALLIFE35KVPOWERSUPPLYDESIGNINCLUDINGTHEFACTORYLOADCALCULATIONANDREACTIVEPOWERCOMPENSATIONMAINTRANSFORMERSUBSTATIONCAPACITY,THETYPEOFNUMBERSANDDETERMINED,ANDTHECHOICEOFTHESUBSTATIONWIRINGSCHEMESINTHECHOICEOFQUALIFICATIONSHORTCIRCUITCALCULATIONANDSWITCHEQUIPMENTCHOICETHESCHEMEDETERMINATIONOFTHESECONDARYCIRCUITANDPROTECTIONRELAYCHOICEANDSETTINGLIGHTNINGPROTECTIONANDGROUNDINGDEVICEDESIGNWORKSHOPDISTRIBUTIONCIRCUITWIRINGSCHEMEDETERMINED,ANDTHELINEWIRESANDITSPOWERDISTRIBUTIONEQUIPMENTANDTOPROTECTTHEEQUIPMENTCHOICEANDELECTRICALLIGHTINGDESIGNANDDRAWINGOFTHECIRCUITKEYWORD35KVSUBSTATION，DISTRIBUTIONCIRCUITDESIGN35KVA9A10A11A12A13A10A14A15A16A173目录摘要1第1章35KV变电所及配电线路设计5G20G17G20负荷计算5G20G17G21G3无功补偿计算及设备选择6G20G173G3变电所G1313置的选择12G20G173G17G20G3变电所的G2010G1287912G3G20G173G17G21G3变电所所G3348选择的G980G14336的应G17993G5502的G2419G202912G20G17G23G3变电所的主变压器台数和容量的选择13G3G20G17G23G17G20G3主变压器台数的选择13G20G17G23G17G21G3主变压器容量的选择14G20G175G3变电所主接线方案的设计14G20G17G25G3短路电G8981和容量的计算16G20G17G26G3变电所G980次设备的选择23G3G20G17G26G17G20G3G3G980次设备选择的G980G14336要求23G3G20G17G26G17G21选择G2520G12879电气设备的G10317G2047的要求24G3G20G17G26G173G3G3G980次设备G7669G20576应G9397G17287的G7477G122625G20G17G27G3G3变电所高压进线和G1314压出线的选择29G20G17G27G17G20变电所进线方式的选择30G20G17G27G17G21G3变配电所进出导线和电G13530的选择30G3G20G17G27G173G3G2520G12879电力线路的导线G6142G19766的选择步G2060030G20G17G27G17G23G3电力线路选择的G1867G1319G1856式31G3G20G17G27G175G3设计进出线的选择32第2章继电保护以及二次回路的设计36G21G17G20G3继电保护装置的G3534G7424要求36G21G17G21G3二次回路的接线G4445装要求36G21G173G3G335KV主变压器的保护装置设计37G21G17G23G3备G11004电G9316G14270G2172G6249G1849装置的选择39G21G175G3防雷保护和接地装置设计4035KVA18A19A20A21A22A19A23A24A25A264致谢41参考文献4235KVA18A19A20A21A22A19A23A24A25A265第1章35KV变电所及配电线路设计11负荷计算G3G3G3G3求计算负荷G17837G11468工作G12228为负荷计算。G7186G9994负荷计算G7171G7693G6466G5062G11705的工厂G11004电设备的G4445装容量确定、G20056G7411G993变的G7380G3835G1563G5831负荷。G17837G1022负荷G7171设计G7171作为选择工厂电力系统供电线路导线的G6142G19766G12227、变压器容量、开关电器和G1126G5875器G12573的G20081定G2454数的G1393G6466。电力负荷G2460G2495电力负G17745，G4439G7171G6363G13803G11004电能的G11004电设备G6122G11004电G2345G1313。G2490G980G7171G6363G11004电设备G6122G11004电G2345G1313所G13803G11004的电功率G6122电G8981的G3835G4579。G7693G6466电力G3809G7692对供电G2499G19764G5627的要求及中G7041供电G3324G6931G8847、G13475G8994G990G17908G6116的G6451G3845G6122G5445G2721G12255G5242，电力负荷G980G14336G2010为G989G13435G726G3G980G13435负荷G726G980G13435负荷为中G7041供电G4570G17908G6116G1166G17535G1272G1141G13785，G6122G13785中G7041供电G4570G3324G6931G8847、G13475G8994G990G17908G6116G18337G3835G6451G3845G13785，G3926G18337G3835设备G6451G3363、G18337G3835产G2709G6265G5235G12573G12573。G3G3324G980G13435负荷中，G5415中G7041供电G4570发生中G8614、G10202G9868和G9791G9810G12573G5785G1929的负荷，以及G10317G2047G18337要G3342所的G993G1813G16780中G7041供电的负荷，应G11487着G10317G2047G18337要的负荷。G3二G13435负荷G726二G13435负荷为中G7041供电G4570G3324G6931G8847、G13475G8994G990G17908G6116较G3835G6451G3845G13785，G3926G3835量产G2709G6265G5235、中G7041供电G4570G5445G2721G18337要G11004电部门正常工作G12573。G3G989G13435负荷G726G989G13435负荷为G980G14336电力负荷，所有G993属于G990述的G980、二G13435负荷G13785。G3由于计算负荷G7171供电设计的G3534G7424G1393G6466，所以计算负荷确定的G7171否合理，直接G5445G2721到工厂电力设计的质量，电力设计的G13475G8994G5627问题。G3926计算负荷估算太G3835，G4570增加供电设备的容量，使工厂电网变的G3809杂，浪费有色金属，G3324无形中就增加了初G6249资和运行工作量。G10317G2047G7171由于工厂企业G7171国家电力的主要G11004户，以G993和理的工厂电力需要量作为G3534础的国家电力系统的建设，G4570给整G1022国民G13475G8994建设带来很G3835的危害。G3926果选的过G4579，G2460使电器和导线电G13530处G3324过负荷下运行，增加了电能的G6451G13803，导致绝缘过早老化甚至烧毁，降G1314了设备的使G11004寿命。G2499见，正确计算负荷计算，有很G3835设计决定作G11004，其意义G18337G3835。但G7171由于负荷G5785G1929G3809杂，G5445G2721因素多，很难准确的确定出来。设备的计算负荷的变化也有G980定的计算规律，G4439与设备的G5627能、生产的形式、能G9316的供应的状G1929G12573多种因素有关。所以，负荷计算只G7171电力系统设备选择的G980G1022估算负荷。G335KVA18A19A20A21A22A19A23A24A25A266我国的确定负荷的方法，主要有需要系数法、二项式法，需要系数法G7171普遍采G11004的计算负荷的G3534G7424方法，二项式法应G11004局限很G3835，但确定设备台数教少而容量差G2047悬殊的G2010支干线的计算负荷时，比较的合理，而且方便。G3G7424设计的车间设备台数较多、设备容量都G11468差G993G3835，所以宜采G11004需要系数法。G3G3G3G3负荷计算G1856式G3926下G726G3G3有功计算负荷G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3P30KDPEG3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（11）G3式中PEG11004电设备组总容量G993含G11004电设备容量,G2345G1313KWG3KDG11004电设备组的需要系数G3无功计算负荷为G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3Q30P30TANG3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（12）G3式中TAN对应于G11004电设备组功率因数COS的正切值视G3324计算负荷为G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3S30P30/COSG3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（13）G3G3G3G3G3计算电G8981为G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3I30S30/31/2UNG3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（14）G3式中UNG11004电设备组的G20081定电压G2345G1313KVG3功率因数G3G3G3G3G3G3COSP30/S30G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（15）G3G7693G6466需要系数计算法和变电所的设计G1393G6466,通过计算G2499以得出此变电所的计算负荷G17G3G312无功补偿计算及设备选择变电所的无功补偿对于整G1022工厂的设计G7171极为G18337要的。按G1852国供G11004电规G2029G458规定高压供电的工业G11004户,功率因素G993得G1314于G19G17G28G30其G1194G5785G1929,功率因素G993得G5225于G19G17G275G17G3926G17810G993到G990述要求,G2029需增设无功功率的G1166工补偿装置G17G3功率因数G7171G15925量工厂供电系统电能G2045G11004G4630G5242及电气设备使G11004状G1929的G980G1022G1867有代G15932G5627的G2454数。G3324工厂供电系统中，绝G3835多数G11004电设备都有电G5875G5627的G1031735KVA27A28A29A30A31A28A32A33A34A357G5627。（G16844G3926G726G5875应电G7438、电G9950G7438、电G5371G9821及气G1319G6930电G9795G12573G5875G5627负荷）G17837G1135设备G993G1177需要G1186电力系统中G2572G6922有功功率，G17836要G2572G6922无功率以产生G17837G1135设备正常工作所必须的G1144变G11925G3342，G1186而降G1314了设备运行时的功率因数。G3926果G3324设备G1817G2010G1817G2010发G6393了设备G9520力、改G2904设备运行G5627能、提高其G14270G9994功率因数，G4590G17810G993到工厂规定的功率因数要求时，G2029要G13783G15397G1166工补偿。G3G1166工补偿G7171G3324变压器G1314压G1403装设无功补偿装置，G3324保G16789G1314压G1403有功率G993变的G5785G1929下G1955G4579设备的无功功率。G1186而G1955G4579了设备总的视G3324功率，G13565G4579了变压器容量、导线的G6142G19766G12227及G980次设备的容量。G2528时G1177降G1314了变电所的初G6249资、设备运行时的G6451G13803和工厂的电费开支。现G3324所G11004的补偿装置有G2528步补偿器和G19757电电容器。G2528步补偿器无功功率的发电G7438，G4439的G7380G3835G1260G9869G7171G2499以G3355G2260的G16855G14422电网的电压G8712G5191，但其无功功率补偿量越G4579，G2345G1313G20G78G89AG85G17908G1227越高，G2375使容量很G3835G2528步无功补偿器也G17840G2495G19757电无功补偿器G17161，而且G6451G13803G3835、G4445装要求高、运行G13512护G3809杂，因此只有G3324G3835电网中枢G16855压G6122中降压变电所中使G11004。G11458G2081G726工厂中普遍采G11004G5194G13864电容器来补偿供电系统中的无功功率。G4439G980G14336G2010为G989种G726高压G19610中补偿、G1314压G19610中补偿、G1314压G2010G6967补偿。G3由G2081G19766的车间负荷计算G11705车间的计算很G3835，但功率因数普遍很G4579。G1186G15932中G2499G11705，G16825厂3G27G19VG1403G7380G3835负荷时的功率因数只有077。而提供电部门要求G16825厂35KV进线G1403G7380G3835负荷时功率因数G993应G1314于090。G13783G15397到主变压器的无功G6451G13803G17840G3835于有功功率G6451G13803，因此G3324变压器G1314压G1403补偿时，G1314压G1403补偿G2530的功率因数应G12257G5506高G1135，G2474G19G17G28G21。G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G11468关的无功功率补偿G1856式G3926下G726G3无功功率补偿装置容量G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3QCP30（TANTAN）G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3（16）G3式中G3P30工厂的有功计算负荷G2345G1313KG58G3TAN对应G2419来功率因数COS的正切G30G3TANA36对应需补偿到功率因数的COSA37正切G30G3补偿G2530总的视G3324负荷G726G3S30G466P302Q30QC2G46705（17）G3变压器有功G6451G13803G3G3G3G3PTPK2P0（18）G335KVA38A39A40A41A42A39A43A44A45A468G3G3G3G3G3G3G3G3G3G3G3G3G3式中G3G440G51A47变压器的G12366G17745G6451G13803G30G3G440G51A48变压器的短路G6451G13803G30G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G163变压器的负荷率,G3S30/SN,G3对于G25G20G19KVG1314G6451G13803配电变压器,有G6927G6451G13803G2499按下G2027G12628化G1856式计算G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3PT0015S30（19）变压器无功G6451G13803G726G3G3G3G3QT（I0/100UK/1002）SN（110）G3式中G726G3G44A49G3变压器的G12366G17745电G8981G11346G2010比G3UA50变压器的短路电压百分比对于610KVG1314G6451G13803配电变压器,有G6927G6451G13803G2499按下G2027G12628化G1856式计算G3QT006S30（111）G3变压器高压G1403有功功率G726G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3PP30PT（112）G3变压器高压G1403无功功率G726G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3QQ30QT（113）G3补偿G2530的有功功率G726G3SG466P2Q2G46705因此3G27G19VG1403G7380G3835负荷时功率因数G7254G2474G19G17G28G21来计算，3G27G19VG1403所需无功功率补偿容量G2520车间计算G3926下G3G12544G980车间G3G3G3QCP30（TANTAN）800G459TANARCCOS065G713TANARCCOS092G460692KVAR选G51G42G45G20型G1314压无功功率G14270G2172补偿G4643，采G11004其方案G21G261（主G4643）G20台与方案G23G261G17753G4643G25台G11468G13479合,总G1861容量G20G20G21G78G89AG85G104G26G32G26G27G23G78G89AG85。因此无功补偿G2530工厂3G27G19VG1403和G25KVG1403的负荷计算G3926下G15932所G12046G3G3G335KVA38A39A40A41A42A39A43A44A45A469A51A52A53A54A55A56A53A52A57A58A54A59A60A61A62A63A64A65A61A62A66A67A68A69A70A51A71A72A73A74A75A76A46A77A78A79A80A81A82A83A84A85A86A81A82A83A84A87A88A89A75A81A82A83A84A90A91A92A81A82A83A91A93A94A95A96A97A98A99A100A78A79A95A101A102A103A94A95A95A104A93A102A105A106A93A95A101A94A105A94A107A95A101A105A93A94A95A96A97A108A109A98A99A110A111A107A94A112A93A94A95A96A97A98A99A113A78A79A95A101A104A94A94A95A95A105A103A106A94A105A112A101A93A105A106A93A107A101A93A38A114A115A109A116A117A118A95A101A95A106A105A95A101A112A103A37A102A119A96A97A78A79A120A46A95A101A104A94A94A95A95A101A95A106A105A105A103A106A101A112A103A94A105A102A107A94A101A103A106G3G12544二车间G3QCP30（TANTAN）4293G459TANARCCOS066G713TANARCCOS092G460301KVAR选G51G42G45G20型G1314压无功功率G14270G2172补偿G4643，采G11004其方案G21G261（主G4643）G20台与方案3G261G17753G46433台G11468G13479合,总G1861容量G20G20G21G78G89AG85G104G20G14G27G23G78G89AG85G1043G323G25G23G78G89AG85。因此无功补偿G2530工厂3G27G19VG1403和G25KVG1403的负荷计算G3926下G15932所G12046G3G3A51A52A53A121A55A56A53A122A57A58A54A59A60A61A62A63A64A65A61A62A66A67A68A69A70A51A71A72COSA46A77A78A79P30/KWQ30/KVARS30/KVAI30/AA93A94A95A96A97A98A99A100A78A7906642934848964762984A93A94A95A96A97A108A109A98A99A110A111364A93A94A95A96A97A98A99A113A78A790964293120894459767764A123A38A114A115A109A116A117A1180012026A102A119A96A97A78A79A120A4609442931212447304304G3G12544G989车间G3QCP30（TANTAN）3429G459TANARCCOS044G713TANARCCOS092G4605452KVAR选G51G42G45G20型G1314压无功功率G14270G2172补偿G4643，采G11004其方案G21G261（主G4643）G20台与方35KVA38A39A40A41A42A39A43A44A45A4610案G23G261G17753G4643G23台G11468G13479合,总G1861容量112KVAR5560KVAR。因此无功补偿G2530工厂3G27G19VG1403和G25KVG1403的负荷计算G3926下G15932所G12046G3G3A51A52A53A124A55A56A53A54A57A58A54A59A60A61A62A63A64A65A61A62A66A67A68A69A70A51A71A72COSA46A77A78A79P30/KWQ30/KVARS30/KVAI30/AA93A94A95A96A97A98A99A100A78A7904434296921277241117359A93A94A95A96A97A108A109A98A99A110A111560A93A94A95A96A97A98A99A113A78A790933429132123674755833A123A38A114A115A109A116A117A1180012026A102A119A96A97A78A79A120A460933429113238367943541G3G12544G3247车间G3QCP30（TANTAN）4713G459TANARCCOS068G713TANARCCOS092G46030163KVAR选G51G42G45G20型G1314压无功功率G14270G2172补偿G4643，采G11004其方案G21G261（主G4643）G20台与方案G23G261G17753G4643G21台G11468G13479合,总G1861容量112KVAR3336KVAR。因此无功补偿G2530工厂3G27G19VG1403和G25KVG1403的负荷计算G3926下G15932所G12046G3G3G3A51A52A53A64A55A56A53A121A57A58A54A59A60A61A62A63A64A65A61A62A66A67A68A69A70A51A71A72COSA46A77A78A79P30/KWQ30/KVARS30/KVAI30/AA93A94A95A96A97A98A99A100A78A7906847135014468816104558A93A94A95A96A97A108A109A98A99A110A111336A93A94A95A96A97A98A99A113A78A7909447131654499487589A123A38A114A115A109A116A117A118002036A102A119A96A97A78A79A120A460944725016576499764809G3G12544G1128车间G3QCP30（TANTAN）25335G459TANARCCOS077G713TANARCCOS092G46010387KVAR35KVA38A39A40A41A42A39A43A44A45A4611选G51G42G45G20型G1314压无功功率G14270G2172补偿G4643，采G11004其方案G20G261（主G4643）G20台与方案3G261G17753G4643G20台G11468G13479合,总G1861容量84KVAR2168KVAR。因此无功补偿G2530工厂3G27G19VG1403和G25KVG1403的负荷计算G3926下G15932所G12046G3G3A51A52A53A125A55A56A53A124A57A58A54A59A60A61A62A63A64A65A61A62A66A67A68A69A70A51A71A72COSA46A77A78A79P30/KWQ30/KVARS30/KVAI30/AA93A94A95A96A97A98A99A100A78A7907725335211113297850106A93A94A95A96A97A108A109A98A99A110A111168A93A94A95A96A97A98A99A113A78A7909925335431125739047A123A38A114A115A109A116A117A118002024A102A119A96A97A78A79A120A4609825337433525742477G3G25KV高压车间G3QCP30（TANTAN）26955G459TANARCCOS074G713TANARCCOS092G46