节能型无人值守换热站的智能控制系统

.2011.19(7)ComputerMeasurement&Control:2011-01-04;:2011-02-14:(1971-),,,,,,:1671-4598(2011)07-1614-05:TP27315:A谢维(,100124):,,TwidoPLCATV71GPRS;,,GPRS;,,,;,,:;;PID;;GPRSIntelligentControlSystemforEnergySavingandNobodyonDutyHeatExchangeStationXieWei(BeijingUniversityofTechnology,Beijing100124,China)Abstract:Tosolvetheproblemsoftheheatexchangestation,anintelligentcontrolsystemfornobodyondutyisproposed,whichiscomposedofHMI,PLC,VSDandGPRSmodule.Thispaperpresentstheautomaticsecondarytemperaturecontrolloop,andthedesignoftheVSDcontrolsolutionforcirculatingpumpandmake-upwaterpump,thentheremotedatacommunicationviaGPRSnetwork.Theprac-ticeprovesthatprogrammodulardesignisreasonable,andthecontrolprecisionofalgorithmishigh,communicationalsohasstablereliableperformance.Theapplicationinanorthcityheatexchangeenterprisereducesenergyconsumptionandwaste,andbringsgreateconomicben-efit.Keywords:heatexchangestation;PLC;PIDcontrol;VSD;GPRSnetwork0,,3:;;,,3,,120e,45/0,,(),,11111,,,322(1)1,PIDTwidoPLC,:-PLC-PID,,A/D,,,,,;,PLCPID,,,,,,,,,112HMIPLCGPRS5:¹,;º,;»,;¼,;½,(1):;;(2):();;;;#1614#7:1(3)/:/;/;;;/0(4)/:,;/0,;/0,(5):Q=Q+(t2g-t2h)*G*K(1)(1),Q,t2g,t2h,G,K(6):,,,102PID:u(t)=Kpe(t)+1TiQi0e(t)dt+Tdde(t)dt(2)(2):e(t)=r(t)-y(t),r(t),y(t),Kp,Ti,TdPIDKp=116~5,Ti=3~10m,Td=015~3mG(s)=KTs+1e-Ss,[1],,Kp=315,Ti=7m,Td=215m,,2111,tw,t2g,twt2g=f(tw),t2g[2]:t2g=tn+12(tc2g+tc2h-2tcn)tn-twtcn-tcw1/(1+B)+12G2(tc2g-tc2h)tn-twtcn-tcw(3)(3),t2g(e),t2h(e),tn(e),tw(e),tc2g(e),tc2h(e),tcn(e),tcw(e),G2=GG'GGc,B2,,,,,,,,,2123,75kW,21,,,10,,;10,,,,,234#1615#193,,,;,,,,,::Q=(t2g-t2h)*G*K,Q,$t=t2g-t2hG,,;,2132,5kW,11,,,,,4,,,,,,,,()(),,PLC,:014MPa,0138MPa214PLCModbus,PLCModbusModbus,PLC,:¹,;º;»,,;¼,215,,,;,,;,,,,,,3311PLC,,,,,3:(1):MagelisPLC,,PID;,;,(2)PLC:Twido,PID;PIDD/A,();,;/(3):,,,PLCModbus,ATV71PLC312(1)PLC,,,PLCPLCA/D,D/A,PID,,,11AITT_101AIPT_101AITT_102AIPT_102AITKF_101AIFIT_101AOTKC_101AITT_103AIPT_103AITT_104AIPT_104AITT_105AIFIT_102AIXH_101AIBS_101AIFIT_103AILT_101AOXHC_101AOBSC_101DIXH1_RN_BDIBS1_RN_BDIXH1_RN_GDIBS1_RN_GDIXH1_SFDIBS1_SFDIXH_AMDIBS_AMDOQT_B_XH1DOQT_B_BS1DOQT_G_XH1DOQT_G_BS1DOALMA/DPLC,,,,;,,,;,,,,,#1616#7:A/D,,;,,;,,,PLC[3],5:,,(45Hz),,,,,,,,5PLC(2)PLC,,,,,,,,,(3)1):,:¹;º;»;¼();½2)3)/:,,,,,4)/:,,,,5)6):,GPRS,;GPRS,;GPRS,:(1),,,,;(2);(3)313GPRS,,:(1),,PLC,(2)(3),GPRSZigBee(),GPRS[4],6GPRS:¹;º;»;¼;½;¾;¿;À;Á;Â,,3,3,,;,,,;,#1617#196GPRS,,,/010~30%,104,,,,GPRS,:¹;º;»,,,,,,,:[1].PLCPID[J].,2009,17(8):1544-1547.[2],.[J].,2005,22(5):52-53.[3]Twido[Z].,2004,8.[4].[J].,2006,16(3):61-64.(1610)[6-7]411PEM,,9,,9412PMT,,,,,5Allen-BradleyPLC,PID,,,:[1]CharlesA.Bishop,VacuumDepositionontoWebs,Films,andFoils[M].WilliamAndrewPresss,USA,2007,pp3-23.[2],,,.PEMTiO2[J].,2008,29(6):pp885-888.[3]ShingoOHNO,DaisukeSATO,PhotocatalyticPropertiesofTiO2FilmsDepositedbyReactiveSputteringinMid-FrequencyModewithDualCathodes[J].JapaneseJournalofAppliedPhysics,2004,43(4):8234-8241.[4]Allen-Bradleycompany,1785PLC-5ProgrammableControllersQuickReference[Z].Allen-Bradleycompany,USA,2008,pp1-330.[5],,,.[J].,2008,16(11):1619-1634.[6],,,.[A].13[C],,2007,146-151.[7]V.Bellido-Gonz‚lez,DanielB,CounsellJ,etal.ReactiveSputterGasControlofnon-stableplasmaconditions[A],Proceedingof5thInternationalConferenceonCoatingsonGlass[C],UK,pp34-39.#1618#