RockwellAllen-Bradley1746OW161794-TB3发电机失磁异步运行时,一般处理原则如下:(1)对于不允许无励磁运行的发电机应立即从电网解列,以免损坏设备或造成系统事故.(2)对于允许无励磁运行的发电机应按无励磁运行规定执行以下操作:1)迅速降低有功功率到允许值(本厂失磁规定的功率值与表计摆动的平均值相符合),此时定子电流将在额定电流左右摆动.2)手动断开灭磁开关,退出自动电压调节装置和发电机强行励磁装置.3)注意其它正常运行的发电机定子电流和无功功率值是否超出规定,必要时按发电机允许过负荷规定执行.4)对励磁系统进行迅速而细致的检查，如属工作励磁机的问题,应迅速启动备用励磁几恢复励磁.5)注意厂用分支电压水平,必要时可倒至备用电源接带.6)在规定无励磁运行的时间内,仍不能使机组恢复励磁,则应将发电机自系统解列.大容量发电机的失磁对系统影响很大.所以,一般未经过试验确定以前,发电机不允许无励磁运行.国产300MW发电机组,装设了欠磁保护和失磁保护装置.为了使保护装置字系统发生振荡时不致误动,将失磁保护时限整定为1S.发电机失磁时,经过0.5S,欠磁保护动作，发电机由自动励磁切换到手动励磁,备用励磁电源投入运行,如果不是发电机励磁回路故障,发电机仍可拉入同步而恢复正常工作.如果备用励磁投入运行后,发电机的失磁现象仍未消除,那么经过S,失磁保护动作将发电机自系统解列。在变压器自动跳闸时，如有备用变压器，应将备用投入，以检查自动跳闸的原因。若无备用，则检查变压器跳闸是何种保护动作，以及变压器跳闸时有何外部现象，若检查证明变压器跳闸不是内部故障所致，而是由于过负荷、外部短路或保护装置二次回路故障所引起，则可不经内部检查即可投入。如有故障，则经消除后再行送电。1：首先大概确定跳闸的原因，并将两侧开关退出运行2：故障分析，分清是变压器本体故障还是负荷侧短路引起的跳闸，可以根据报警信号判断故障的范围，究竟是过流跳闸还是速断跳闸，大型的变压器还有差动，瓦斯等3：如果是外部故障则根据信号切断故障侧的出线开关，对变压器试送，保证其他无故障部分及时恢复供电4：如SIEMENSS42024-A1809-A1G01SLX102S4202-A180930DAYWARRANTYFromIsraelSIEMENSS42024-A1737-A2G01S42024-A1737-U501WARRANTY30DAYFromIsraelSIEMENSS42024-A1804-A1G02SUB102S42024-A1804-U501WARRANTY30DAYFromIsraelSIEMENSS42024-A1732-B1G01S42024-A1732-U501WARRANTY30DAYFromIsraelSIEMENSS42024-L5061-B101-1OCUMNPROCUNITWM2CLL0SIEMENSS42024-L3170-A2FromIsraelSIEMENSS42024-L5085-A397-1OCUTEXCARDWMD5G40SIEMENSS42024-L3183-ATFromIsraelSIEMENSS42024-A1744-A2G01DSC8V24S42024-A1744-U50130DAYWARRANTYFromIsraelSIEMENSS42024-A1760-A1G03S42024-A1760-U501WARRANTY30DAYFromIsraelSIEMENS0-PROTECTIONCARD1310nm,LHS42024-D3560D10130DAYWARRANTYFromIsraelSIEMENS0-WORKINGCARD1310nm,LHS42024-D3559D101-D230DAYWARRANTYFromIsraelSiemensS42024-D5013-A100-7SN64S42024-D501330DAYWARRANTYFromIsraelSiemensS42024-D5008-A201-01OIS1D1550nmS42024-D500830DAYWARRANTYFromIsraelSiemensS42024-D5001-A200-6EI2-42120OhmS42024-D500130DAYWARRANTYFromIsraelSiemensV52FRAMERELAYCARDS42024-A1842-A1-E1gebr.FromGermanySiemensS42024-L5288-C100-7SURPASShiT7550TEXV52.5Gbit/s-10GbitMultiplexS42024-L3304-A200-07SIEMENSCAMModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-07OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-06OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A123-03SIEMENSOCR192-23Module193.7THz90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A127-01SIEMENSOCR192-27Module193.3THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-07OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-B101-03SIEMENSMPU-BModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-05OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-A101-03SIEMENSMPUModule90DayHardwareWarranty+FreeFedexShippingS42024-L5090-C150-2SIEMENSOMDFCModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A111-03SIEMENSOCR192-11Module194.9THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-01OSCTSIEMENSModule90DayHardwareWarranty+FreeFedexShippingSIEMENSSURPASShiT7035FANUNITS42024-L5474-A1-01FromChinaSIEMENSSURPASShiT7060FANUNITS42024-L5351-A1-07FromChinaS42024-L3304-A200-07SIEMENSCAMModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-07OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-06OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A123-03SIEMENSOCR192-23Module193.7THz90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A127-01SIEMENSOCR192-27Module193.3THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-07OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-B101-03SIEMENSMPU-BModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-05OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-A101-03SIEMENSMPUModule90DayHardwareWarranty+FreeFedexShippingS42024-L5090-C150-2SIEMENSOMDFCModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A111-03SIEMENSOCR192-11Module194.9THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-01OSCTSIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3304-A200-07SIEMENSCAMModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-07OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-06OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A123-03SIEMENSOCR192-23Module193.7THz90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A127-01SIEMENSOCR192-27Module193.3THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-07OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-B101-03SIEMENSMPU-BModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-05OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-A101-03SIEMENSMPUModule90DayHardwareWarranty+FreeFedexShippingS42024-L5090-C150-2SIEMENSOMDFCModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A111-03SIEMENSOCR192-11Module194.9THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-01OSCTSIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3304-A200-07SIEMENSCAMModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-07OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-06OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A123-03SIEMENSOCR192-23Module193.7THz90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A127-01SIEMENSOCR192-27Module193.3THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-07OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-B101-03SIEMENSMPU-BModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-05OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-A101-03SIEMENSMPUModule90DayHardwareWarranty+FreeFedexShippingS42024-L5090-C150-2SIEMENSOMDFCModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A111-03SIEMENSOCR192-11Module194.9THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-01OSCTSIEMENSModule90DayHardwareWarranty+FreeFedexShippingSiemensS42024-C3016-A1MAINFRAMEBOARDFromIsraelSIEMENSS42024-A1736-A1G02S42024-A1736-U501FromIsraelSIEMENSS42024-A1757-A1G01S42024-A1757-U501-230DAYWARRANTYFromIsraelSIEMENSSURPASShiT7035FANUNITS42024-L5474-A1-01FromChinaSIEMENSSURPASShiT7060FANUNITS42024-L5351-A1-07FromChinaSiemensS42024-D5004-A100-4IPU16S42024-D500430DAYWARRANTYFromIsraelSIEMENSS42024-A1809-A1G01SLX102S4202-A180930DAYWARRANTYFromIsraelSIEMENSS42024-A1737-A2G01S42024-A1737-U501WARRANTY30DAYFromIsraelSIEMENSS42024-A1804-A1G02SUB102S42024-A1804-U501WARRANTY30DAYFromIsraelSIEMENSS42024-A1732-B1G01S42024-A1732-U501WARRANTY30DAYFromIsraelSIEMENSS42024-L5061-B101-1OCUMNPROCUNITWM2CLL0SIEMENSS42024-L3170-A2FromIsraelSIEMENSS42024-L5085-A397-1OCUTEXCARDWMD5G40SIEMENSS42024-L3183-ATFromIsraelSIEMENSS42024-A1744-A2G01DSC8V24S42024-A1744-U50130DAYWARRANTYFromIsraelSIEMENSS42024-A1760-A1G03S42024-A1760-U501WARRANTY30DAYFromIsraelSIEMENS0-PROTECTIONCARD1310nm,LHS42024-D3560D10130DAYWARRANTYFromIsraelSIEMENS0-WORKINGCARD1310nm,LHS42024-D3559D101-D230DAYWARRANTYFromIsraelSiemensS42024-D5013-A100-7SN64S42024-D501330DAYWARRANTYFromIsraelSiemensS42024-D5008-A201-01OIS1D1550nmS42024-D500830DAYWARRANTYFromIsraelSiemensS42024-D5001-A200-6EI2-42120OhmS42024-D500130DAYWARRANTYFromIsraelSiemensV52FRAMERELAYCARDS42024-A1842-A1-E1gebr.FromGermanySiemensS42024-L5288-C100-7SURPASShiT7550TEXV52.5Gbit/s-10GbitMultiplexS42024-L3304-A200-07SIEMENSCAMModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-07OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-06OMD4-2SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A123-03SIEMENSOCR192-23Module193.7THz90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A127-01SIEMENSOCR192-27Module193.3THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-07OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-B101-03SIEMENSMPU-BModule90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A220-05OMD42-1SIEMENSModule90DayHardwareWarranty+FreeFedexShippingS42024-L3310-A101-03SIEMENSMPUModule90DayHardwareWarranty+FreeFedexShippingS42024-L5090-C150-2SIEMENSOMDFCModule90DayHardwareWarranty+FreeFedexShippingS42024-L3311-A111-03SIEMENSOCR192-11Module194.9THz90DayHardwareWarranty+FreeFedexShippingS42024-L3313-A210-01OSCTSIEMENSModule90DayHardwareWarranty+FreeFedexShippingNEWPRXIGBTKD224505OVERNIGHTSHIPPINGAVAILABLEOrt:KanadaNEWKollmorgenServostardrive603,S60300,1YrWarranty...Vickers-Kollmor?genAcramaticServoAS10301,1YrWrtyNE...NEWTOSHIBAMG15G1AL3OVERNIGHTSHIPPINGNEWMG200H1AL2TOSHIBAIGBTMODULEOVERNIGHTSHIPPINGVickersAcramaticServoAS10302,1Rebuilt,YrWarranty,...MITSUBISHIIGBTCM400DY1-1Overnightshipavailableca...NEWFANUCA16B-1212-0531/06B404953POWERSUPPLYUNITKollmorgenPowersupplyunitPA5000,1YrWarranty,F...KollmorgenPOWERSUPPLYPSR4/5A-112-040?0FASTSHIPLENZEVECTORDRIVEINVERTER8200SERIESE82EV152_4C200EMERSONServodriveDINVERTERDIN3380110BREFURBISHEDNEWTYCOIGBTP480A03-MODULE,06087FASTSHIPAVAIABLHEIDENHAIN1387-020-2048ENCODERgoodNEWMITSUBISHIELECTRICIGBTTM10T3B-HF2101AHF2101AKollmorgenServostarCDCB06561,1YrWarranty,1days...SIEMENS6RA7031-6FV62-0?-Z,SIMOREGDCMASTER,FastshipSIEMENS6SN1162-0BA02-0?AA2RADIALGEBLAESECOOLINGFANNEWTOSHIBAMIG30J103HIGBTModule,Call905-465-0346NEWInfineonIGBTFZ1200R16KF4OVERNIGHTSHIPPINGCompumotorDigiplanServoDriveBLH75BBLH75BParker1PSIEMENS6SN1123-1AB00-0?HA2=0HA1LTMODULE2X8AM...DYNAMICBRAKERESISTORBWD50007272OHM,850VDCFORK...TOSHIBAMG25J6ES40CompatibletoIEF260A2IGBTModulePersonalitymodulePM030BF4050QH-0forElectro-craftGIDDINGS&LEWISCENTURIONDS-100DS120,401-34201-22PersonalitymodulePM020BS4030PH-0forElectro-craftKollmorgenServostardriveCE20560,1YearWarranty,NE...KollmorgenSERVOSTARPROFIBUS011020900560CARDNEWMITSUBISHIIGBTQM200HA-2HOVERNIGHTSHIPPINGCompumotorS6-DriveSSeriesParkerStepperMotordriveOrt:KanadaNEWBSM75GB120DN2IGBTModuleEUPECFASTSHIPAVAILABLE)