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1,2,3,2(1.7100752.7100493.710054):,。:;;;:TM406:B:1001-8425(2010)01-0040-04ApplicationandStructureofOn-LineMonitoringDeviceforTransformerBushingDielectricPowerFactorandEquivalentCapacitanceZHANGQi-min1,YANGWen-hu2,LIANGHong-jun3,XUYang2(1.Xi'anXDBushingCo.,Ltd.,Xi'an710075,China;2.Xi'anJiaotongUniversity,Xi'an710049,China;3.Xi'anBoyuanElectricCo.,Ltd.,Xi'an710054,China)Abstract:Theprincipleandmainstructureofon-linemonitoringsystemfordielectricpow-erfactorincapacitorapparatusareintroduced.Theapplicationexampleispresented.Keywords:Dielectricpowerfactor;Capacitance;On-linemonitoring;Bushing1,,,,、、。,,、。:,tanδ0.5%,tanδ3.5%,7。,。、《》。,,。,AVO、LDIC。,。,;;,。,,。,,。TRANSFORMER47120101vol.47JanuaryNo.1201012。。。1。:(BYTS-200)、()、PT、。,,。。DSP,2。,,CAN。,。PT,,A/D。DSP,,。CAN(CAN2.0)。DSPTI:TMS320F2812。CPU150MHz,150MIPS;18K×16SRAM;12,±10V/±5V,16,250KSPS;512K×16FLASH,90MIPS~100MIPS。110kV、;,;;,,;,,,。1。3。3.1,,;,,;(30mm)。,0.5mA~DSPCANPTFLASH2DSPFig.2OperatingprincipleofDSPPTCTPT/CVTCTPT/CVT1Fig.1Structureofsystem:CVT/PT0.2。1/%/%0.1~20±0.05/pF10~2×106±0.5/mA0.5~500±1Table1Parametersofsystem4147500mA,0.01°,;,;,。3.2(A、B、CPT)、,A/D,DSPFFT(),、。CAN。3.3PT,,,。3.4,15V。I/O,,,。3.5。,;;,;、;。42007220kV(110kV),3。,(),。4512、、。1200810102008127,220081112008127。45,,,,0.1%。,123Fig.3Installationofsensor41Fig.4ParameterstrendofbushingforNo.1transformer52Fig.5ParameterstrendofbushingforNo.2transformer(48)4247,(),5,()。4:IC=U1k-U1kZ″K+Z″K(1)5:I2L=I2Z″KZ″K+Z″K(2)I2L=I2Z″KZ″K+Z″K(3)3、45:I2=I2L+IC=I2Z″KZ″K+Z″K+U1k-U1kZ″K+Z″K(4)I2=I2L-IC=I2Z″KZ″K+Z″K-U1k-U1kZ″K+Z″K(5)(1)~(5),。5,。。(1),。(2)、。(3),。:[1],.(20052)[M].:,2005.[2],.(19991)[M].:,1999.[3].[M].:,2004.[4].[M].:,2002.[5].()[M].:,1980.[6].[M].:,1996.[7],,,.()[M].:,1984.[8].[M].:,1999.I2I2LI2LZ″KZ″K5———()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!0.5%,,。,,,。5,,。,,。:[1],,.[M].:,2006.[2]DL/T596-1996,[S].[3],,.[J],2007,31(7):55-58.[4],,,.[J].(),2007,30(3):26-30.[5],,.[J].,2003,27(8):72-76.[6],.[J].,2004,40(1):45-47.[7],.[J].,1999,23(8):65-68.:2009-01-09:(1969-),,,,。(42)48
本文标题:变压器套管介损与等值电容在线监测装置的结构及应用
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