第40卷，总第236期2022年11月，第6期《节能技术》ENEＲGYCONSEＲVATIONTECHNOLOGYVol.40，Sum.No.236Nov．2022，No.6660MW燃煤机组瞬态过程能量分布特性研究谢天，何宁，李庚达，张秋生，王文彬，崔青汝(国家能源集团新能源技术研究院有限公司，北京102209)摘要:厘清变负荷瞬态过程中燃煤机组的能量分布特性是研究瞬态过程能耗的关键问题。本文以660MW超超临界机组为对象，建立了全系统模型，获得了不同瞬态过程中机组各主要换热设备包括金属蓄热与工质蓄热在内的基础蓄热，以及受过程控制迟延影响的附加蓄热。结果表明:低压加热器和低温过热器分别为基础蓄热最小和最大的两个设备;变负荷过程中，基础蓄热随机组负荷值增大而增加，附加蓄热随机组负荷值增大而减小;整个工况下附加蓄热最大值为145．64kW，与基础蓄热相比较小。关键词:燃煤机组;瞬态过程;基础蓄热;附加蓄热中图分类号:TM621文献标识码:A文章编号:1002－6339(2022)06－0515－06StudyonEnergyDistributionCharacteristicsduringTransientProcessesof660MWCoal－firedUnitXIETian，HENing，LIGeng－da，ZHANGQiu－sheng，WANGWen－bin，CUIQing－ru(CHNEnergyNewEnergyTechnologyＲesearchInstitute，Beijing102209，China)Abstract:Clarifyingtheenergydistributioncharacteristicsintransientprocessisakeyissueinstudyingenergyconsumptionduringtransientprocessforcoal－firedunit．Anintegrated－systemmodelisdevel-opedwitha660MWultra－supercriticalunitastheobject，thenthebasicheatstorage，includingheatstoragesinmetalmaterialsandworkingfluid，andtheadditionalheatstorageinfluencedbythetimedelayofprocesscontrolarecalculatedforthemainthermalequipmentduringvarioustransientprocesses．Theresultsshowthatthelow－pressureheaterandlow－temperaturesuperheaterarethetwodeviceswiththelowestandhighestheatstorage，respectively;duringtheload－cyclingprocess，thebasicheatstoragein-creaseswiththeincreaseoftheunitload，andtheadditionalheatstoragevaluedecreaseswiththein-creaseoftheunitload;themaximumprocess－controlledadditionalheatstorageis145．64kWinthewholeoperatingprocess，whichissignificantlessthanthebasicheatstorage．Keywords:coal－firedunit;transientprocesses;basicheatstorage;additionalheatstorage收稿日期2022－10－10...
