电器噪声对低压电力线通信的干扰及其抑制

　1,2,1(1.,400041;2.,400041):低压电力线作为数据通信的媒介时,其信道特性并不理想,特别是家用电器引起的大量噪声对于电力线通信系统的性能影响很大。因此了解电器噪声的规律,对于选择电力线通信调制手段、载波频率等方面都具有现实意义。文章通过对家用电器所产生的干扰与噪声的特性分析,总结了其对低压电力线载波通信的影响,提出了具体的抑制措施。同时指出了在低压电力线载波通信信道分析与编码、调制过程中,运维人员需要注意的一些问题。:电力线通信;电器噪声;干扰:TN915.853:B　　　　　:1005-7641(2005)07-0015-02收稿日期:2004-10-11;修回日期:2004-11-190　,。,、,、,、、。、。(AMR),,、。,,、、,、,。,,,,、,[1-4];,。,。,,。1　,,、、,/,,。、,2。、、、,,,PLC,,,。,。,、、、4。(1):(SCR),、、,。SCR,2,V。SCR、,。(2):。,、、、。,。(3):,、。1V,1ms。,,,,。(4):SCR,·15·26153　　　　　　　　　　　　　　　　　　　　　　　Vol.26No.1532005710　　　　TelecommunicationsforElectricPowerSystem　　　　　　Jul.10,2005,,PAL,15.625kHz。GenMarubayashi,1[5]。表1　家电噪声幅度与持续时间统计/mV/μs369.3858.8760.2347.9707.81114.2689.4423.6686.7925.51336.7836.5329.2431.21015.8505.2287.7559.9794.9271.8357.6562.6625.2355.3285.4457.6755.9407.7951.11494.4774.1462.6279.1447.0536.9357.2443.6638.5357.4228.7363.1512.8488.8265.7824.11157.31047.4468.3197.2311.3722.434.3505.9713.31008.848.6670.81199.3140.07.587.9119.7105.356.041.650.1148.2115.5213.8255.53584.7193.51457.52155.5,,100～400kHz[6-7],SCR150kHz;20kHz～1MHz,。。[6],,X10,100～500kHz3～7V()。2　,4,,,。,、,,,。,,,。,、,,,,。,,。,。,,。,(SpreadSpectrumCarri-er),。,,,,,,,,。,、、[7]。3　,,,。,、,,,。,,,。(下转第19页)·16·　　　　　　　　　　　　　　　　　　　　　　　　　　　　　2005,26(153)参考文献:[1]　,.[M].:,1994.[2]　,,.PLC[C].,2000.9.[3]　.[J].,2003,24(1):47-51.[4]　INT5130IntegratedPower-lineMAC/PHYTransceiver[Z].IntellonTechnicalReference.2001.[5]　RadfordD.Spread-SpectrumDataLeapThroughACPowerWiring[Z].IEEESpectrum.1996.谈宏华(1962-),男,湖北松滋人,博士,主要研究方向为光、机、电一体化及网络技术。DesignofpowerlinecommunicationsystembasedonINT5130chipTANHong-hua(Wuhanchemicalengineeringinstitute,Wuhan430073,China)Abstract:Thepowerlinecommunication(PLC)hasspecialadvantages.Thepaperintroducesasystemdesignofhardwareandsoftwarewhichcanbeusedtowebbrowsethroughpowerlinecommunication.ThissystemtransmitsEthernetdatabyusingpowerlinenetwork,itstransmittingspeedupto14Mbit/s.ItusesINT5130chipasthecorechipandatthesametimeusesINT1000,AT89C51andAT8989UPasperipherychips.Thiscommunicationsystemhasthehigherreliability,itsuppliesnewmeanstoimplementhomenetwork.Keywords:powerlinecommunication(PLC);design;resistinterfere(上接第16页)参考文献:[1]　,.[J].,2000,(7):36-38.[2]　RadfordD.Spread-SprectrunDataLeapThroughACPowerWiring[J].IEEESpectrum,1996,(9):48-53.[3]　ChanMHL,DonaldsonRW.AttenuationofCommunica-tionSignalsonResidentialandCommercialIntrabuildingPower-DistributionCircuits[J].IEEETransonElectromag-neticCompatibilty,1984,28(4):220-230.[4]　HendrikCFerreira,OlafHooijen.PowerLineCommunica-tions:AnOverview.TransactionsoftheS.A[J].InstituteofElectricalEngineers,1996,12(9):558-563.[5]　G.Marubayashi,S.Tachikawa.SpreadSpectrumTransmis-siononResidentialPowerLine[J].IEEEConferenceonSpread-SpectrumTechniques,1996,(1):1082-1086.[6]　,.[J].,2000,(3):12-15.易　斌(1977-),男,湖南益阳人,硕士,讲师,研究方向为人工智能在电力系统的应用及低压电力线通信。钱逢安(1942-),男,安徽铜陵人,硕士,教授,主要研究方向为人工智能、节能研究、传感器技术等。米红菊(1979-),男,四川南充人,助教,主要研究方向智能建筑、机电一体化。Interferenceandsuppressivemethodofelectricapparatus′noiseonlowvoltagePLCsystemYIBin,QIANFeng-an,MIHong-ju(PLAUniversityofLogisticEng.,Chongqing400041,China)Abstract:Whenlowvoltagepowerlineisusedasadatacommunicationmediaitschannelcharacteristicsisnotsoideal,thenoisewhichcomesfromelectricapparatusindistributionnetworkwillinfluencetheperformanceofpowerlinecommunicationsystemseriously.Itisimpor-tanttostudytheelectricapparatus′noisescharacteristic,whichcanmakelowvoltagePLCsystemtoworkbetter.Thepaperdiscussesthenoiseinterferencescausedbyelectricapparatus,summarizestheinfluencetolow-voltagepowerlinecommunicationsystem,andproposesthesuppressivemeasure.Somefactorstowhichthemaintainersneedtopayattentionduringtheprocessofsignalchannelanalysis,codingandmodulationarestatedbriefly.Keywords:powerlinecommunication(PLC);electricapparatus′noise;interference·19·　　　　　　　　　　··　　INT5130