辐射能作为热量信号的过热蒸汽温度控制

:2006201218:10072290X(2006)03200392031,1,2(11A,523936;21,510600):,,,,,,,,A5(300MW),:;;;;:TK223173:ASuperheatedsteamtemperaturecontrolwithradiantenergyascalorificvaluesignalZHOUWen2jia1,LIANGPei2lu1,YEXiang2qian2(1.ShajiaoAPowerStation,Dongguan,Guangdong523936,China;2.GuangdongPowerTest&ResearchInst.,Guangzhou510600,China)Abstract:Traditionalcontrolsystemforboilersuperheatedsteamtemperatureregulatesdesuperheatingwaterflowthroughtestingthesuperheatedsteamtemperatureanditsvariationtrend,thuskeepingthetemperatureofsuperheatedsteamwithinapermissiblerange.Theconsiderabledelayinchangeofsuperheatedsteamtemperaturewithrespecttodisturbanceofdesuperheatingwaterflow,however,leadstothelagginginsuperheatedsteamtemperaturecontrolandasaresultthecontroleffectisnotsatisfying.Onaccountofthefactthatthesignaloftotalboilerradiantenergyfullyembodiesthechangesofcombustionconditionsinaboilerandcanforeshowthevariationtrendofinletfluegastemperature,thesignaloftotalboilerradiantenergyisintroducedinthecontrolsystemforsuperheatedsteamtemperature.Desuperheatingwaterflowisregulatedinadvancethroughtestingthefluegastemperatureanditsvariationtrend,soastoimprovethecontrolonmainsteamtemperature.Withthismethod,regulationtestsweremadeonUnit5(300MW)inShajiaoAPowerStationatconstantandvaryingloadsandtheresultsweresatisfactory.Keywords:superheatedsteam;temperaturecontrol;radiantenergy;signal;regulation,,,1,3,1,31D,Q,t13t2193Vol119No1320063GUANGDONGELECTRICPOWERMar12006,,,1,,,,,,22,,,,,,,,,2,A5(300MW),,A5,,,,,,,,K1K2,,33320058,,,,31144,292MW180MW,312(280MW),K104194K2,,,,,,5(K2,K1)0155313300MW,,280MW,2%,300MW,,,018,01267,,,,,674,,:[1],,1[J].,2004,17(5):1-41[2],,15[J].,2004,21(2):28-291[3],,,1[J].,2001,21(2):85-881(45)143:414197,016415kV/m,1198612T,415107,010001419kV/m,01008510T5500kV1425,90,41294%,71%14500kV,:a),500kV220kV35kV,220kV35kV500kV,5kV/m220kV,5kV/m35kV5kV/mb)500kVHGISGIS,GIS,GISc)220kVGISGIS,GIS,GIS,d)500kV,100T500kV,100Te),015m,110m117m,117m,015mf)4kV/m6a),500kV5kV/m,35kVb),,c),,d):(1971-),,,,,(41)[4],,,1[J].,2001,21(6):80-831[5],,1[J].,2003,23(4):158-1611[6],,,1300MW[J].,2004,37(10):62-651[7],,1[J].,2005,25(3):374-3771:(1969-),,,,,543:500kV