火电厂机组负荷优化分配办法

1火电厂机组负荷优化分配办法张秋生1,付仁杰21.北京国华电力技术研究中心有限公司,北京1000252.国华浙能发电有限公司,浙江宁波315612[]火电机组负荷优化分配以机组的煤耗成本特性为基础,目的是使发电成本最低,其中不但将煤耗量降为最低,并且使全厂机组负荷的变化满足自动发电控制(AGC)的速率和精度的要求,提高供电品质此外,在机组变负荷过程中尽可能地降低负荷调节频率,提高机组的稳定性,延长主辅机设备的寿命对此,研究以煤耗最低为原则,合理分配全厂机组负荷的方法,实现发电厂机组的安全稳定和经济运行[]发电厂;机组负荷;优化分配;模型;AGC[]TM761+.22[]A[]1002-3364(2009)01-0001-03:2008-02-21:(1970-),,,,E-mail:[e-mail]/0,,,,,,,,,[1,2]11.1,,N,,[3]:Fj=a0j+a1jPj+a2jP2j(1):Fjj;a;PjjK,:K=bj=dFjdPj=a1j+2a2jPj(2),(2)Pj=K-a1j2a2j,K:Enj=1Pj=Enj=1K-a1j2a2j=PR(3)PRKj:2K=PR+Eia1i2a2iEi12a2i(4)Pj=1a1j#PR+Eia1i2a2iEi12a2i-a1j2a2j(5),(5),,:Pj,min[Pj[Pj,max(6)1.2,,,[4]:minT=min{max[ti(Pi-Pi,his)]},i=1,2,3,,,n(7):T;Pi,hisi;Pii;iti(x)=|x|/vi,upx0|x|/vi,downx0,vi,upi;vi,downi:(1):Eni=1Pi=PL(8)PL(2):Pi,min[Pi[Pi,max(9)1.3,,:minm=Eni=11|Pi-Pi,his|00|Pi-Pi,his|=0(10):(1):Eni=1Pi=PL(11)(2):Pi,min[Pi[Pi,max(12)AGC,,,,,,,,,,,,1,3600MW12,,(1)DEH;(2);(3);(4);(5)3AGCAGC,,3(),,,AGCAGC,(1),,,,(2)AGC,,(3),,(4),,,4,AGC,,AGC,,,[][1],,.[J].,2005,33(3):18-22.[2],,,.[J].,2005,29(4):100-103.[3],.[J].,2003,36(10):31-33.[4],.[J].,2007,36(8):74-78.[5],,.[J].,2001,17(1):23-26.[6],,.AGC[J].,2004,28(4):75-77,99.[7],,,.[J].,2006,26(19):86-92.OPTIMALLOADDISTRIBUTIONAMONGUNITSINTHERMALPOWERPLANTZHANGQiu-sheng1,FURen-jie21.BeijingGuohuaElectricPowerTechnologyResearchCentreCoLtd,Beijing100025,PRC2.GuohuaZhenengPowerGenerationCoLtd,Ningbo315612,ZhejiangProvince,PRCAbstract:Takingcharacteristicsofcoalconsumptioncostoftheunitasbasis,theoptimalloaddistributionamonggeneratingunitssolvesmainlytheproblemofreducingthepowergenerationcosttoaminimumvalue,thegoalofitisnotonlytoreducethecoalcon-sumptiontoaminimumvalue,firstofall,itisnecessarytomaketheloadvariationofunitsinthepowerplanttosatisfytherequir-mentsofspeedandaccuracyinautomaticgenerationcontrol(AGC),toenhancethequalityofpowersupply.Secondly,intheprocessofvaryingloadofunit,thefrequencyofloadregulationshouldbereducedasfaraspossible,enhancingthestabilityofunit,lengtheningthesevice-lifeofequipmentsformainandaxiliarymachines.Forthese,areasonablemethodforloaddistributionamongunitsinthewholepowerplant,whichtakesminimumcoalconsumptionasaprinciple,hasbeenstudied,torealizesafe,stable,andeconomicopera-tionofunitsinthepowerplant.Keywords:powerplant;unit'sload;optimaldistribution;model;AGC