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1,2,1,3,1(1.,150001;2.,163458;3.,150001):,DeviceNet,DeviceNet2;,,DeviceNet:;;DeviceNet;;:TM726;TM771:2008201210;:2008203216(GB02A103);(LBH2Z07161)0,,,,,,[1][223],,[425],[6],[7]110kV,DeviceNet,DeviceNet,[8],,[9],,,,[10],DeviceNet,,DeviceNet1,,,1()()()()DeviceNet/,,,,6632112008610Vol.32No.11June10,20081Fig.1Blockdiagramofcommunicationnetworkofpowersupplyanddistributionlineadaptiveprotectionsystem2DeviceNet,,DeviceNet(),DeviceNet2.1TdelayAB,TsstTpropTdrv,,TsstTwaitTframe22Fig.2Modeloftransmissiontimedelayoffieldbusmessage:Tdelay=Tsst+Tprop+Tdrv=Twait+Tframe+Tprop+Tdrv(1),,2108m/s,,TpropTdrv,:TdelayTwait+Tframe(2),Tdelay:Tdelay=iNnodeM(i)j=1Tdelayi,j(3):Nnode;M(i)i(2),TwaitTdelay,Twait,k=1,:Twaitk=Tresid+Tbreak+jNHPTwaitk-1+TbitTperij(Tframej+Tbreak)(4):Tresid;Tbreak;NHP;Tperijj;Tbit2.26NeffNsumPinf,Pinf=NeffNsum(5),NdTdelayQthr,Qthr=NdTdelay(6),TframeTdelayPeff,Peff=iNnodeM(i)j=1Tframei,jTdelay(7),TdelayPutil,Putil=TdelayTsum(8)76,,NlossNPloss,Ploss=NlossN(9)2.3DeviceNet/DeviceNet1:(),422:(),143:(),194:(),125:(,),44/,12,345DeviceNet2:DeviceNet500kbit/s,/,1()10()(MACID)1,MACID2,MACID3,,MACID111),/,42,DeviceNet,1010:,44,Pinf0;42,,DeviceNet,DeviceNet7,,6,7,108,Pinf51.9%3,Tsum50ms,MACID,MACID2,MACID3,,MACID11(2)(4):Twait1=0ms,Twait2=0.094ms,Twait3=1.520ms,Twait4=2.946ms,Twait5=4.372ms,Twait6=5.798ms,Twait7=7.224ms,Twait8=8.650ms,Twait9=10.076ms,Twait10=11.502ms,Twait11=12.928ms,Tdelay=14.254ms(6)(8):Qthr=NdTdelay=10428100014.254=235.7(kbit/s)Peff=iNnodeM(i)j=1Tframei,jTdelay=13.83414.254=97.1(%)Putil=TdelayTsum=14.25450=28.51(%)14:Twait1=0ms,Twait2=0.094ms,Twait3=0.632ms,Twait4=1.170ms,Twait5=1.708ms,Twait6=2.246ms,Twait7=2.784ms,Twait8=3.322ms,Twait9=3.860ms,Twait10=4.398ms,Twait11=4.936ms,Tdelay=5.374ms;:Qthr=208.4kbit/s,Peff=96.8%,Putil=10.75%2)44DeviceNet4:;;;,,10862008,32(11),44,,DeviceNet;DeviceNet7,,7167,108,Pinf51.9%;72,68,Pinf23.5%3,Tsum50ms,(CSMA/AMP),MACID2,MACID3,,MACID11(2)(4):Twait2=0ms,Twait3=1.474ms,Twait4=2.948ms,Twait5=4.422ms,Twait6=5.896ms,Twait7=7.370ms,Twait8=8.844ms,Twait9=10.318ms,Twait10=11.792ms,Twait11=13.266ms,Tdelay=14.734ms(6)(8):Qthr=NdTdelay=10448100014.734=238.9(kbit/s)Peff=iNnodeM(i)j=1Tframei,jTdelay=14.32014.734=97.2(%)Putil=TdelayTsum=14.73450=29.47(%)19:Twait2=0ms,Twait3=0.634ms,Twait4=1.268ms,Twait5=1.902ms,Twait6=2.536ms,Twait7=3.170ms,Twait8=3.804ms,Twait9=4.438ms,Twait10=5.072ms,Twait11=5.706ms,Tdelay=6.334ms;:Qthr=240.0kbit/s,Peff=97.3%,Putil=12.67%12:Twait2=0ms,Twait3=0.412ms,Twait4=0.824ms,Twait5=1.236ms,Twait6=1.648ms,Twait7=2.060ms,Twait8=2.472ms,Twait9=2.884ms,Twait10=3.296ms,Twait11=3.708ms,Tdelay=4.114ms;:Qthr=233.3kbit/s,Peff=97.2%,Putil=8.23%DeviceNet211DeviceNet2Table1CommunicationperformancesofDeviceNetattwodatatriggermodes//ms/(kbits-1)/(%)/(%)4214.254235.797.128.51145.374208.496.810.754414.734238.997.229.47196.334240.097.312.67124.114233.397.28.23,DeviceNet(100)3(MAC),(FIFO),,(Pause)Pause,,,[11]IEEE802.3xPause,,/1:()2:()3:()4:()5:()596,:1TFP,;TRV;TCI;TCO;TLP,2108m/sTRV,TCI,TCO,16()1();100m;100Mbit/s,50;1020144bit;0.001;14880Cisco3000,16,HL148;99.9Mbit/s;,1650,p=123.5Mbit/s,out=100Mbit/s,outp,in=100Mbit/s,1ep=1out+1p(10)ep=55.3Mbit/s,ep/16in,,,nq:TRV=TH+k-1i=0(TiRH+TiR)+TkR+NRinr0qinr0(11):NRk-1,NR=q-THin-k-1i=0TiRHin,NL:TCI=nNLpTRV+nNLpTOFnkp+n(NL-k)epTRV+nNLpTOF(12),:TCO=min{(TRV+TCI)(p-out),m}out(13),2,Pause,,2ms,2Table2Transmissiontimedelay/sTFPTRVTCITCOTLP5.0010-61bit2.0610-31713.2010-3Pause0.7210-3613.2010-3Pause0.7210-3613.2010-3Pause0.7210-3613.2010-3Pause0.7210-3613.2010-3Pause0.7210-3613.2010-3Pause0.3610-3317.0010-3101.9310-3165.0010-61bit0.104219978,WG34.03:1ms100ms,10ms1000ms,1000ms,DeviceNet4,DeviceNet072008,32(11),,DeviceNet,DeviceNet[1]BRAHMASM,GIRGISAA.Developmentofadaptiveprotectionschemefordistributionsystemswithhighpenetrationofdistributiongeneration.IEEETransonPowerDelivery,2004,19(1):56263.[2]ABDELAZIZAY,TALAATHEA,NOSSEITAI,etal.Anadaptiveprotectionschemeforoptimalcoordinationofovercurrentrelays.ElectricPowerResearch,2002,61(1):129.[3]LIYinhong,DUANXianzhong.Astudyonintegratedadaptiverelayingsystemforlarge2scalemixedpowernetwork//ProceedingsofCanadianConferenceonElectricalandComputerEngineering:TowardaCaringandHumaneTechnology:Vol1,May427,2003,Montreal,Canada.Piscataway,NJ,USA:IEEE,2003:5752578.[4],,..,2007,31(7):39244.SHENBing,HEBenteng,ZHANGWujun.Newtypeadaptivedistancerelaywithimprovedperformance.AutomationofElectricPowerSystems,2007,31(7):39244.[5],,..,2000,24(13):19222,51.CAOGuochen,HANLei,ZHUBin.Realizationmethodofadaptiveprotectionsystemwithdistributedstructureforlarge2scaletransmissionnetwork.AutomationofElectricPowerSystems,2000,24(13):19222,51.[6],,..,2005,29(8):45249.WUZaijun,HUMinqiang,DUYansen.Analysisofrealtimeperformanceofcommunicationnetworkinsubstations.AutomationofElectricPowerSystems,2005,29(8):45249.[7]LIZhongwei,TONGWeiming,LIFengge,etal.Studyonadaptiveprotectionsystemofpowersupplyanddistributionline//Proceedingsof2006InternationalConferenceonPowerSystemTechnology,October22226,2006,Chongqing,China:9562961.[8]SIMONYE