[优秀毕业设计精品]某电机制造总厂降压变电所的电气设计

电气工程课程设计报告题目某电机制造总厂降压变电所的电气设计姓名学号班级电气工程及其自动化0804指导老师完成日期2011/2/101前言供配电技术，就是研究电力的供应及分配的问题。电力，是现代工业生产、民用住宅、及企事业单位的主要能源和动力，是现代文明的物质技术基础。没有电力，就没有国民经济的现代化。现代社会的信息化和网络化，都是建立在电气化的基础之上的。因此，电力供应如果突然中断，则将对这些用电部门造成严重的和深远的影响。所以，作好供配电工作，对于保证正常的工作、学习、生活将有十分重要的意义。供配电工作要很好的为用电部门及整个国民经济服务，必须达到以下的基本要求（1）安全在电力的供应、分配及使用中，不发生人身事故和设备事故。（2）可靠应满足电力用户对供电可靠性和连续性的要求。（3优质应满足电力用户对电压质量和频率质量的要求。（4）经济应使供配电系统投资少，运行费用低，并尽可能的节约电能和减少有G14406G18341G4658G9052G13803G18339。G2490G3818，在供配电工作中，G17836应G2524G10714的G3800G10714G4628部和G1852G4628，G5415G2081G994G19283远的G1863G13007，G2375要G10043G20050G4628部和G5415G2081G2045G11422，G2460要有G1852G4628G16278G9869，能G10043G20050G3835G4628，G17878应G2469G4649。本G8437G16850G12255G16786G16757的题G11458是G7588电G7438G2058造G5647G2390G19489G2399G2476电所的电气G16786G16757G727G1881G4493主要有工G2390G17139G14667G16757G12651和G7092G2163G2163G10587G16757G12651及G15929G1619G727G2476电所G3423G5347及位G13634的G17885G6333G727G2476电所主G2476G2399G3132及主G6521G13459G7053G7708的G17885G6333G727G11713G17347电G8981G16757G12651G727G2476电所G980G8437G16786G3803的G17885G6333G994G7669G20576G727G2476电所G20652G2399G17839G13459和G5353G1849电G13530的G17885G6333G727以及G2476电所G1120G8437G3250G17347G7053G7708的G17885G6333和G2476电所G13499电保G6264，G19462G19659保G6264。G11013于电气G16786G3803G12193G12879G13333G3822，以及G6175G3848G17176G7021的G19492G2058，所以G6117并G993能保证所G17885G16786G3803为G7380G2524G17878。本G8437G16786G16757G4590有G993G4448整的G3332G7053，G16843G6363G4560G13781G5084G6221G16792G6363正。2目录A1A01A3A2A4A5A7A6A8A9A104A12A2A13A7A6A11A144A12A16A13A7A6A15A174A12A19A13A7A6A18A2041A22A21A23A24A25A2642A22A21A27A28A29A3053A32A33A31A31A34A29A3054A32A36A35A37A385A3A16A4A5A40A7A6A39A41A106A12A2A13A27A28A6A42A43A44A45A45A46A6A426A12A16A13A44A45A45A46A47A488A3A19A4A5A50A31A49A51A52A53A54A55A56A57A5810A3A59A4A5A50A31A49A60A50A61A62A63A60A64A65A66A67A56A57A5811A69A68A50A31A49A60A50A61A62A56A57A5811A71A32A60A64A65A66A67A56A7A612A121A13A50A70A31A49A60A64A65A56A57A58A72A7312A122A13A50A31A49A60A64A65A66A67A56A57A5813A3A74A4A5A76A75A31A77A6A4215A69A68A6A42A31A7515A71A68A76A75A6A42A78A79A8015A83A68A6A42A81A82A84A85A86A87A88A89A90A80A93A94A91A92A95A31A75A26A4015A98A32A17A31A34A96A97A76A75A96A56A23A87A88A63A76A75A31A77A101A102A99A10416A3A100A4A5A50A31A49A2A103A7A105A56A57A58A106A10717A69A68A2A103A7A105A56A57A58A106A107A72A7317A71A68A50A31A49A2A103A7A105A56A57A58A106A107A10818A3A109A4A5A50A31A49A110A111A65A53A112A113A114A51A115A116A65A56A57A5820A69A68A69A117A118A119A122A61A110A65A43A120A121A31A123A56A57A5820A126A69A124A69A117A118A119A122A61A110A65A56A57A58A106A10720A126A71A124A128A122A61A70A31A125A97A60A50A56A2A127A120A121A31A123A56A57A58A106A10720A71A68A83A129A117A130A133A61A111A65A56A57A5821A126A69A124A134A131A132A107A13521A126A71A124A31A136A91A137A5A2122A126A83A124A140A138A91A137A5A2122A126A98A124A142A139A31A136A5A2122A126A141A124A145A137A5A2122A126A143A124A147A137A5A2122A126A144A124A72A146A38A5A2122A126A129A124A136A148A22A5A2122A126A149A124A65A150A91A137A2123A126A69A117A124A153A151A15223A126A69A69A124A156A154A155233A157A158A159A160A161A162A163A164A165A166A167A168A169A170A165A171A172A173A17423A175A176A177A178A179A180A181A182A171A17223A175A183A177A173A174A163A167A184A18524A175A157A177A186A187A180A188A189A173A17424A190A191A192A193A194A163A195A196A197A198A187A199A200A165A171A172A201A202A163A203A204A165A205A18925A176A158A194A163A195A196A197A198A187A199A200A165A171A17225A183A158A194A163A195A165A203A204A206A20725A157A158A206A208A163A209A210A211A203A20426A212A158A159A160A161A162A163A164A165A166A167A168A169A170A165A202A163A203A204A206A20726A190A213A192A193A214A167A194A163A195A215A216A201A217A218A206A207A165A208A21927A176A220A194A163A195A165A215A216A203A20427A183A158A194A163A195A221A222A217A218A206A207A165A208A21928A190A223A192A193A224A225A208A219A226A227A228A22929A190A223A230A192A193A231A232A233A23430A190A223A196A192A193A235A236304第一部分设计任务书（一）设计题目某电机制造总厂降压变电所的电气设计（二）设计要求要根据本厂所能取得的电源及用电负荷的实际情况，并适当考虑到工厂的发展，按照安全可靠，技术先进，经济合理的要求，确定变电所的位置与形式，确定主变压器的台数和分变压器的台数，容量及类型。选择变电所主要接线方案及高低压设备进、出线。确定二次回路方案，选择整定继电器保护装置，确定防雷和接地保护装置，（横线部分内容本次课程设计不作具体要求）最后按要求写出设计说明书，绘制设计图样。（三）设计依据1工厂总平面图52工厂负荷情况本厂多数分厂为两班制，年最大负荷小时数为6800小时，日最大负荷持续时间为8小时。除特种电机分厂、G6116G2709G16809G20576G12461为G980G13435负荷，G19148G17908分厂、G19161G9821G6163为二G13435负荷G3818，G1866G1325为G989G13435负荷。本G5647厂的负荷G13491计G17176G7021G3926G159320所G12046。A2370A238A239A240A241A242A243A244A245A239A246A247A248A239A246A249A250A240A241A251A252A253A254A255A20KWA21A0A23A1KVA25A2A27A3COSTANA29A4A5A6KD1A33A7A8A9A37A38A101A40A4150002A40A4120001A40A41102A40A41038082A19608713705A4206A197A116A421203810007A12092A23A13A14A15A46A239A38A10603806A196068117018A16025A197A116A421210007A12093A47A7A14A15A46A239A38A10100003806A420711602A1203A197A115A421010007A12094A48A17A23A13A46A239A38A107000380651807A197A115A421010007A18095A50A15A46A239A38A1017003806A420710205A1206A197A116A421210007A12096A51A15A46A239A38A10380038062A1806811703A16035A197A115A421010007A12097A52A19A245A46A239A198A22150038063A1807211703A16036A197A114A42810007A12098A13A43A238A46A239A198A2250003806A12065112022A24032A197A115A421010007A12099A55A26A14A15A46A239A38A1032003806A420711702A1203A57A286A421210007A120910A59A30A31A38A1012003808A420910506A1208A57A283A42510007A120911A62A32A34A57A2860003809A42100507A12083供电电源情况按照G16825G5647厂与当地G1391电部G19388G18504定的G1391电用电G2339G16770G16280定，G16825厂可G1209G12175厂5000G12871和8000G12871（04G161/KM）两G3800的35KV的G1856用电源G5190线G990取得工作电源。G5190线G20330G12483所装设的高压G7041路器的G7041G8981容量为800MVA。G16825G5190线的G17220G2533G16277厂G5191G19766图。4气象资料最G9921G7388G5191G3355最高G9213G5242为35G263，G5191G3355G9213G5242为18G263，最高G7388G5191G3355G3315G3768G9213G5242为30G263。6第二部分设计说明书（一）负荷计算和无功功率计算1G714G2345G13464用电设备计G12651负荷的计G12651G1856式AG7389G2163计G12651负荷G2345位为KW30PDKEP，DK为G19668要G13007数BG7092G2163计G12651负荷G2345位为KVA30Q30PTANCA65A66A35A36A39A44A45G2345位为KVACOSPS3030D计G12651电G8981N3030U3SI，NU为用电设备的G20081定电压。2G714多G13464用电设备计G12651负荷的计G12651G1856式AG7389G2163计G12651负荷G2345位为KWI30P30PKP式G1025I30PG7171所G7389设备G13464G7389G2163计G12651负荷G1055和，PKG7171G7389G2163负荷G2528时G13007数，可取（085095）B）计G12651G7092G2163负荷G2345位为KVAR3030IKQQQ,G1866G1025G72630IQG7171所G7389设备G7092G216330QG1055和G727KQG7171G7092G2163负荷G2528时G13007数，可取09097C）G16282G3324计G12651负荷（G2345位KVA）22303030QSPD）计G12651电G8981（G2345位A）30303NSIU经G17819计G12651，得到G2520厂G6163和G10995G8975G2318的负荷计G12651G15932，G3926G991图所G12046（G20081定电压取380V）7A491A53A54A56A58A60A61A63A64A67A68A69A49A70A71A72A73A70A71A74A75A76A77A78A79A80A81A82A83PEKWA84A85A86A87COSTANA88A89A90A91KDA92A93A76A7730PKVA30QKVAS30KVA30IA1A94A95A96A97A98A99A1001A101A10250002A101A1022000060137063000120041101644508820352933091A103A104101000880812A105A1062A107A108A109A110A111A112A99A100600065117021201404185281A103A104101000880812A105A10661012814041932933A113A95A109A110A111A112A99A1001000065116025250290385584A103A1048100086406497A105A10610082572903915944A114A115A107A108A111A112A99A10070006312306847658557561148A103A1048100A116A117A1186406497A105A106708582585576211585A119A110A111A112A99A10017007102A116A117A120A120935954134204A103A10410100A116A117A11880812A105A1061801029541422166A121A110A111A112A99A100380065117A116A117A122A1201331556205311A103A1048100A116A117A1186406497A105A10638814015563013217A123A124A125A126A127A128A129150065117A130A131A132A13352561481123A134A1356100A130A131A1364804873A137A138156575614861308A139A140A141A126A127A128A129500066112A130A131A142A133125140190289A134A1358100A130A131A1366406497A137A1385081311401963009A143A144A145A146A126A127A147A148320065117A130A131A142A13380936123187A149A15010100A130A131A13680812A151A1523308893613119910A153A154A155A147A148120069105A130A131A15684882122185A149A1504100A130A131A1363203249A151A15212487882125190811A157A158A159A149A1506000905075450225500760A160A152A161380VA162A163A147A148594033313519A149A150682A152A164A165PK09KQ090682908316742996532A166A167A168G16825电机制G17908G5647厂设备负荷G5468大，类型G13333多，G13792G1391电线路G2460为G22G24G78G89，厂内电压G12573G13435分G2047为G20G19G78G89与G19G17G22G27G78G89，G3252G8504变电所G19668进G15904两次G19489压变G6454。G11013G22G24G78G89G19489G14279G20G19G78G89，G6116G2709G16809G20576G12461G980部分G1186G8504取得电源，G8504G3818G20G19G78G89继续G19489G14279G19G17G22G27G78G89，G1391G1866G1194分厂取得电源。G3（二）无功功率补偿G7092G2163G2163G10587的G1166工G15929G1619装置主要G7389G2528G8505G15929G1619器和并G13864电G6251器两种。G11013G1122并G13864电G6251器具G7389安装G12628G2345、G17828G15904G13512护方G1427、G7389G2163G6451G13803小G1209及G13464装G9801G8975、G6205容方G1427G12573G1260G9869，G3252并G13864电G6251器G3324G1391电G13007G13491G1025G5224用最为G7234G17953。G3G3G11013负荷计G12651G15932G20G17G20G11705，G16825厂G22G27G19G57G1403最大负荷时G2163G10587G3252数只G7389G19G176G27。G13792G1391电部G19388要求G16825厂G20G19KG57进G1403最大负荷时G2163G10587G3252数不小G1122G19G1792，二次G1403大G1122G19G17G276，G3252G8504现G7389情况明显不符合要求。考虑主变压器G7092G2163G6451G13803远大G1122G7389G2163G6451G13803，G3252G8504G19G17G22G27KG57G1403最大负荷时G2163G10587G3252数G3252稍大G1122G19G17G276。G11013前G19766备注所述，变电所G19668进G15904两次G19489压变G6454，G3252G8504G7092G2163G15929G1619也较G13333琐。可G1209取G19G179G24来计G12651G15929G1619容量G7261第G980次G7092G2163G2163G10587G15929G1619G726BQPC2TANARCCOS068TANARCCOS0861442KVARS3022PCQBQC3381COS33812908086A169A170A171A172A173A174A175A176A177QBA178A179A180A1811442KVAR参照图11，选PGJ1型低压自动G15929G1619评屏，并G13864电容器为BW04143型，采用G1866方案2（主屏）1台和方案3（辅屏）12台相结合，G5647共容量为112KVAR131456KVAR。G15929G1619前后，变压器的低压G1403的G7389G2163计G12651负荷基本不变，G13792G7092G2163计G12651负荷减小。G16282G3324G2163G10587变922303030SPQ3381KVA，计G12651电G898130303NSIU4736AA182G2163G10587G3252数提高。G3252G8504G7092G2163G15929G1619后，工厂038KVG1403和对G522410KVG1403的计G12651负荷G3926G1593212所G12046。A18312A184A185A186A187A188A188A189A190A191A192A193A194A195A199A200A201A202A203A204COSA199A200A201A20230P/KW30Q/KVAR30S/KVA30I/A038KVA190A191A205A201A2020682908316742996532038KVA187A188A190A191A206A2071456038KVA190A191A192A206A2070862908171133745126A208A209A210A211A188A189A212A213001530S5100630S103A214A21510KVA216A201A202A199A20008522959181434712002G714第二次G7092G2163G2163G10587G15929G1619G726BQPC2TANARCCOS0703TANARCCOS0923498KVARS3022PCQBQC6477COS64775959092参照图G20G17G20，选PGJG20型低压自动G15929G1619评屏，并G13864电容器为BWG19G174G204G22型，采用G1866方案2（主屏）G20台和方案G22（辅屏）G22G19台相结合，G5647共容量为G20G202G78G89ARG22G20G22472G78G89AR（近似完G6116了G15929G1619任务）。G15929G1619前后，变压器的低压G1403的G7389G2163计G12651负荷基本不变，G13792G7092G2163计G12651负荷减小。G16282G3324G2163G10587变22303030SPQ6447G78G57A，计G12651电G898130303NSIUG2272A，G2163G10587G3252数提高。G3G3G3324G7092G2163G15929G1619前，G2163G10587G3252数为G19G177G19G22，G7092G2163G15929G1619后近似为G19G1792。与G8504G2528时计G12651电G8981也减小了，则G1391电G13007G13491G1025G2520元件的G2163G10587G6451G13803也相G5224减小，G3252G8504G7092G2163G15929G1619的经济效益十分可观。G3252G8504第二次G7092G2163G15929G1619后，工厂G20G19KG57G1403和G22G24KG57G1403的计G12651负荷G3926G15932G20G172所G12046。G310A21711PGJA218A187A188A188A189A219A220A190A191A221A222A223A224A225A18313A184A226A186A187A188A188A189A190A191A192A193A194A195A199A200A201A202A203A204COSA199A200A201A20230P/KW30Q/KVAR30S/KVA30I/A10KVA190A191A205A227A201A2020685959（30002959）6037（19274110）848249010KVA216A227A187A188A190A191A206A207349810KVA216A190A191A192A227A206A207092595925396477374A208A209A210A211A188A189A212A213001530S8900630S152A214A21535KVA216A201A202A199A2000914604826916620109第三部分变电所位置与型式的选择变电所的位置G5224尽量接近工厂的负荷G1025心，工厂的负荷G1025心按负荷G2163G10587矩法来确定。G3324工厂G5647G5191G19766图的G991边和左G1403，分G2047作G980直角坐标的X轴和Y轴，然后测出G2520车间（建筑）和宿舍G2318负荷G9869的坐标位置，1P、2P、L3P10P分G2047代G15932厂G61631、2、310号的G2163G10587，G7389所给G5647厂G5191G19766图近似测定G2520分厂负荷G9869坐标G3926G9911P（25，9）、2P（25，55）、3P（65，9）、4P（65，55）、5P（65，2）、6P（11，115）、7P（11，9）、8P（11，65）、9P（11，4）、10P（155，119），并设11P（1，1）为G10995G8975G2318的G1025心负荷，G3926图31所G12046。G13792工厂的负荷G1025心假设G3324PX,Y,G1866G1025P1P2PL3P11PIP。G3252G8504仿照力学G1025计G12651G1025心的力矩方程，可得负荷G1025心的坐标G726IIIPXPPPPPXPXPXPXPX113211111332211LL（31）IIIPYPPPPPYPYPYPYPY113211111332211LL（32）把G2520车间的坐标代入（31）、（32），得到X3686，Y7717，G3252G8504近似取G9869（37,77）。G11013计G12651结果可G11705，工厂的负荷G1025心G33241号厂G6163（G6116G2709G16809G20576G12461）的东北角。考虑到周围环境及进出线方G1427，决定G33241号厂G6163的东G1403紧靠厂G6163建G17908工厂变电所，器型式为附设式。坐标位置G3926G991图所G12046G726YXA228A229A230A231A232A233A234A235A236A237A238A239第四部分变电所主变压器及主接线方案的选择1变电所主变压器的选择易G11705，为本电机制G17908G5647厂所设计的为35KV/10KV，10KV/380VG5647G19489压变电所，G1866G1025，35KV/10KVSMAX6620KVA,10KV/380VSMAX3471KVA,根据工厂负荷情况及电源情况，G1209及G1186可靠性的计G12651结果G15932明，G5647G19489压变电所G1025采取35KV/10KVG1403设置G980台变压器，10KV/380VG1403设置两台变压器并采用暗备用的备用方式（每台变压器都按最大负荷的70选择，正常情况G991两台变压12器都参加工作，这时每台变压器G3355承担50最大负荷，变压器G3324正常工作情况G991的负荷G1058750/7070,完全满足经济工作的要求。G3324故障情况G991，G11013G1122X30S6620KVA，即选G980台SZ117000KVA/35KV型配电变压器。G14279G1122工厂二G13435负荷的备用电源，考虑G11013邻近G2345位相邻的高压G13864络线来承担。B）两台变压器容量根据G1209G991两式来确定G726060734712082624297NTSKVAKVA3020357621421253064NTSSKVAKVA备注G7262式G15932明每台主变压器容量NTS不G5224小G1122全部G980、二G13435负荷的计G12651负荷G1055和30S即G72630NTSSG3252G8504选两台SL3000KVA/10KV型配电变压器。工厂二G13435负荷的备用电源考虑G11013邻近G2345位相邻的高压G13864络线来承担。主变压器的G13864结G13464G3355为YYN0。选择变压器后，G5647G12628化G1391电线路G3926G991G7262主接线方案的设计（1）变配电所主接线的选择原则（1）当满足G17828G15904要求时，G5224尽量少用或不用G7041路器，G1209节省G6249G17176。（2）当G1391电电源只G7389G980G7477线路，变电所装设G2345台变压器时，G4464采用线路变压器G13464接线。（3）当变电所G7389两台变压器G2528时G17828G15904G7171，二次G1403G5224采用G11013G7041路器分G8585的G2345G8609线接线。分G8585G10088G7041器除具G7389分G8585G19560G12175G5332G1863的作用G3818，与继电保护配合，G17836能G2011G7041负荷电G8981，故障13电G8981G1209及实现自动分合G19404。G2490G3818，G7828G1474故障G8585G8609线时，可直接G6817作分G8585G7041路器分G8585G19560G12175G5332G1863，G13792G1000不G5353G17227正常G8585G1584电，保G16789G1866继续正常G17828G15904。（4）变电所的接线G5224G1186安全，可靠，G9801G8975，经济出发。（5）为了G19492制配出线G11713路电G8981，即G7389多台主变压器G2528时G17828G15904的变电所，G5224采用变压器分G2027G17828G15904。（6）接G3324线路G990的G18003雷器，不G4464装设G19560G12175G5332G1863G727G1306接G3324G8609线G990的G18003雷器，可与电压G1126G5875器合用G980G13464G19560G12175G5332G1863。（7）当低压G8609线为G2464电源，G1000变压器低压G1403G5647G5332G1863和G8609线分G8585G5332G1863采用低压G7041路器时，G3324G5647G5332G1863的出线G1403及G8609线分G8585G5332G1863的两G1403，G4464装设G2004G5332G1863或G19560G12175G5332G1863。（8）变压器低压G1403为04KV的G5647G5332G1863G4464采用低压G7041路器或G19560G12175G5332G1863。当G7389继电保护或则自动G2011G6454电源要求时，低压G1403G5647G5332G1863和G8609线分G8585G5332G1863G3355G5224采用低压G10088G7041器。（9）G11013地G2318电G13605G1391电的变配电所电源出现G16314，G4464装设G1391计G17165用的G999用电压、电G8981G1126G5875器（G980般都安装计量G7600）（10）610KVG3278定式配电装置出线G1403，G3324G7562G12366线路或则G7389G2465G20316可能的电G13530出线回路，G5224装设线路G19560G12175G5332G1863。（11）采用610KVG10088G7041器负荷G5332G1863G3278定式配电装置时，G5224G16825G3324电源G1403装设G19560G12175G5332G1863。（2）变电所主接线方案的选择方案G980G726高，低压G1403G3355采用G2345G8609线分G8585。G1260G9869G726用G7041路器把G8609线分G8585后，对G18337要用G6155可G1209G1186不G2528G8609线G5353出两个回路，用两个电路G1391电G727当G980G8585G8609线故障时，分G8585G7041路器自动G2011除故障G8609线保G16789正常G8585G8609线不间G7041G1391电和不G14280G1363G18337要用G6155G7041电。G13582G9869G726当G980G8585G8609线或G8609线G19560G12175G5332G1863G7828G1474时G16825G8609线G2520G3800G3355G19668G1584电G727当出线为G2464回路时G7562G12366线路出现G1144G2461G17340G17246G727G6205建时G20047G2533两个方G2533G3355G15925G6205建。方案二G726G2345G8609线分G8585G5114G7061路。G1260G9869G726具G7389G2345G8609线分G8585全部G1260G9869，G3324G7828G1474G7041路器G7171不G1262G1025G7041对用G6155G1391电。G13582G9869G726常用G1122大型电厂和变电G7542G13457，G6249G17176高。方案G989高压G1403采用G2345G8609线，低压G1403采用G2345G8609线分G8585。G1260G9869G726任G980主变压器G7828G1474或发G10995故障时，G17902G17819G2011G6454G6817作，即可G17817G17907G5686G3809对整个变电所的G1391电。G13582G9869G726G3324高压G8609线或电源进线G12483进G15904G7828G1474或发G10995故障时，整个变电所G1185G19668G1584电。G1209G990G989种方案G3355能满足主接线要求，采用方案G989时G15441经济最G1351，G1306G7171G1866可靠性相G8616G1866G1194两方案G5058G727采用方案二所G19668的G7041路器数量多，接线G3809G7446，G1866经济性能G5058G727采用方案G980既能满足符合G1391电要求G2460较经济，故本次设计选用方案G980。根据主接线方案，近似G11023出主接线G12628图G3926G991G72614图G3247G19489压变电所主电G8680接线G12628图15第五部分短路电流计算1计算电路31K32K33K2短路计算基准值设基G1946容量为DS100MVA，基G1946电压105DNUU。即高压G1403为1DU37KV，低压G1403为2DU105KVG1209及3DU04KV。则G726221005533105DDDSMVAIKAUKV331001443304DDDSMVAIKAUKV3计算系统各元件阻抗标幺值，绘制等效电路图1电力G13007G13491G726G7041路器G11713路容量为800MVA，则G726111001563337DDDSMVAIKAUKV161X100MVA/800MVA01252G17G7562G12366线路G726G3G7609G15932，G47GJG20G27G24的线路G19471G6251为G19G17G22G22/KM，则G33电力变压器G726G2460G1101335KV/10KV变压器G11713路电压G11346分G1552A240则A241131710011001007KDNTUSXSG1379210KV/038KV变压器G11713路电压G11346分G1552，则G7262421161001210021003KDNTUSXSG3252G8504，G12573效电路G3926G991G7261012520121314133K32K31K4求电源点至短路点的总阻抗及短路电流、容量。1A24231KA2431120246XXXA244A245A246A247A248A249A250A251A252A253A254A255A5A0A1A2A3A4A241311114070246ZIXA23A633111634ZZDIIKAID22211AV11000335012137SXXLU17KU26KU17A25A7A8A9A10A11A12A13A14A15SHK18A33A16A17A18A1933111822556341617ZSHKAIIA35A20A21A22A33A16A17A18A24A26A27A28A29A193311151957SHZKAIIA38A30A1933119591686SHSHKAKAIIA31A32A21A22A34A36A193311407ZKDMVASSIA41A37A39A40A2432KA4532KA42A43A44A46A47A35A48A19A21A22A42A31A32A21A22A17A18/KAA31A32A21A22A34A36/KVAX3ZI3ZI3SHI3SHI3KS32K1246080344179938589480333K2246044564140118026975445A51A1932KA52A8A10A11A12A13A14A53A49SHK18A1432KA52A8A50A11A12A13A14A53A49SHK13A56第六部分变电所一次设备的选择校验1一次设备的选择校验原则（1）按工作电压选则设备的额定电压ENU一般不应小于所在系统的额定电压NU，即ENU。而高压设备的额定电压ENU应不小于其所在系统的最高电压MAXU，即ENUMAXU。查表知NU10KV，MAXU115KV，高压开关设备、互感器及支柱绝缘额定电压ENU12KV，穿墙套管额定电压ENU115KV，熔断器额定电压ENU12KV。（2）按工作电流选择设备的额定电流ENI不应小于所在电路的计算电流30I，即ENI30I（3）按断流能力选择设备的额定开断电流OCI或断流容量OCS，对分断短路电流的设备来说，不应小于它可能18分断的最大短路有效值3KI或短路容量3KS，即OCI3KI或3OCS3KS对于分断负荷设备电流的设备来说，则为OCIMAXOLI，MAXOLI为最大负荷电流。4隔离开关、负荷开关和断路器的短路稳定度校验A动稳定校验条件MAXI3SHI或3MAXSHIIMAXI、MAXI分别为开关的极限通过电流峰值和有效值，3SHI、3SHI分别为开关所处的三相短路冲击电流瞬时值和有效值B热稳定校验条件IMATTITI2322变电所一次设备的选择校验表（1）35KV侧一次设备的选择校验A546135A55A57A58A59A60A61A62A63A64A65A66A67A64A65A66A67A68A69A70A71A70A72A73A72A74A75A76A77A78A79A80A77A78A79A81A82A83A84A85A86A87A88A89A90NUKV30IA3KIKA3SHIA91KAA92IMATI23A90A93A94A95A55A57A96A97A98A99A100A101A94A102A96A100A101A96A103A55A9926340753015A58A59A61A62A104A105A106A107A108A78A89A90ENUENUOCIMAXITIT2A109A71A73A110A111A112A113A94A114A94A95A94A95A55A57A100A94A97A99A100A101A100A96A103A55A99266417424A115A116A117A118A119A120A121A122A123A124A123A125A126A127A128A127A129A130A131A128A125A132A123A125A125A125A133A124A127A125A132A134A135A127A129115A116A136A137A138A139A140A134A124A128A127A128A127A129A130A123A125A133A127A125A129A133A124A124A141A142A143A144A138A145A146A147A124A128A127A128A127A129A130A135A125A132A134A12