500kV超高压输电线路使用电力载波传输编码命令的故障分析与对策

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SDH,。,:,;;;1588V2。,SDH,,,,。1KendalRH,SivaramBalasubramanian,AnatilyMoldovansky.TheapplicationofIEEE1588toadistributedmotioncontrolsystem.In:ProceedingofODVACIPNetworksConference&10thAnnualMeeting,RockwellAutomation,November20042TimeSynchronizationforEthernet.RaifMesserschmidt3KenHarris,SteveZuponicic.CIPSynctimesynchronisationforCIPnetwork.RockwellAutomation4JohnCE.RecentadvancesinIEEE1588technologyanditsapplication.AgilentTechnology5IEC61588Standard-2004.Precisionclocksynchronizationprotocolfornetworkedmeasurementandcontrolsystem6.SDH.,2010,38(3)7,,..,2002,25(2):81~898,,.、.,2007,40(2):168~172(:2010-10-15)ABBETL500、、、,,。;;;;500kV,,,(100192)1,+。、,,,。,178201012A、、。,(),,,。2ABBETL500,,NSD550,0~2kHz,。,,()。、,1。。,,ms。、、(DSP)(FSK)。。。:10-2,dB。。,6dB,6dB,10-2。,1dB,。、、。。,。10-n(n=1,2…),(FSK)。ETL500,。(1)()T02=14ms,Pmc≤10-2(S/N=3dB),Puc≤10-6。(2)()T01=10ms,Pmc≤10-2(S/N=6dB),Puc≤10-4。(3)()T02=26ms,Pmc≤10-2(S/N=3dB),Puc≤10-20。(1):Pmc=(NT-NR)/NT(1)Pmc(),NT,NR。(2):Puc=Nuc/NB(2)Puc(),Nuc,NB。,(DSP)。3,A、B、C、D4(ETL5006),A、B,C、D(),“2+2”“3+1”“4+2”。NSD550(),、。,、,。179ITU-TR.35、R.37R.38,,NSD5508,,。2。NSD550300Hz~2000Hz,、(,8)。,。,,。,2FSK。4NSD550,(),,。,。FSK,FSK,,(C、D)。(1ms~100ms),,。,,,,ABBETL500C、DFSK。:CFSK640/1067Hz—0/1,01;DFSK640/1493Hz—1/0,10。5500kVETL500500kV—,,、,356km,,,(),35%,20068。,I、II、、。I、II8,16,4(I、II2);8(I、II24);4(I、II2),ABBETL581。500kVI、II:200682007,8(、4),、RCS-902:20072281∶10C;20074173∶13IC;200783023∶58A;200792720∶42IB。4:,RCS-902(A)。,,,,,,,,。,A、B、C,D。,。,31dB,。,,D。,:①,、、;②,IID。,D,。,。,。,D。。180201012A6(D),,,。。,,。,。,。D。,D。DC。,D。,C、D,D,。DC(640/1067Hz,FSK),。D(640/1493Hz,FSK)(1493Hz)C,C。,DFSKC,DC。,D。DC。FSK(3):Δf=|f2-f1|+2B(3),Δf,f2f1FSK,B。,:fc≥640Hz+ΔfD,D,D,CD,。,D,2。,DFSK。。F1(640Hz)1/4。F2(1493Hz),。,D,,D,,D。,。FSK,,,FSK,D。D。,D。D。(1),。,。,。(2),(2240Hz),。,。480Hz,。FSK,,,181。,D,,D。2440Hz2640Hz,2200Hz,(3),。,。。,D,A、B。,。(4),FSK,。,。,,(5),。4D。,,,,,,。,,。D,,D。,。,。,D。,,,。7D,D。,,。(1)D,。,。,,(4):C=Blog(1+S/N)(4),CB,SN3。S,C,。,BS。,。。,,,。,,D。D。,,,,,。(2)DD,。FSK。FSK,,。,。,,,180°。,,。180°,。,(01),,FSK,,。,FSK182201012A。180°,0,3。180°,,,,,。,,,。。,,,。,,。(3)C、DABB,CD,。,:C(640Hz)0,D(640Hz)1。,。2,640Hz1493Hz。C,,FSK。FSK01,。FSK01,,,。0。C,0,640Hz,0,1067Hz,FSK1。,640HzC。DC,,640HzD。D0、1。8,D,。,41dB46dB,,。,,,,。,D。D600,,。、,100%。A、B14ms,C、D21ms,。9,,,、、。,。。,,,,。1,..:,20062,,..:,20093,..:,19804ABBETL500(:2010-10-15)183

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