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ICS27.100K54RecordNo.J926—2009ElectricPowerIndustryStandardofthePeople'sRepublicofChinaPDL/T5428—2009TechnicalCodeforDesignofI&CProtectionSysteminFossilFuelPowerPlantDesignofFossilFuelPowerPlantDesignofFossilFuelPowerPlantIssueDate:JuIy22,2009ImpIementationDate:December1,2009IssuedbytheNationaIEnergyAdministrationofthePeopIe'sRepubIicofChinaElectricPowerIndustryStandardofthePeople'sRepublicofChinaPDL/T5428—2009TechnicalCodeforDesignofI&CProtectionSysteminFossilFuelPowerPlantDesignofFossilFuelPowerPlantDesignofFossilFuelPowerPlantCHINAELECTRICPOWERPRESSBEIJING,2011图书在版编目（CIP）数据DL/T5428—2009火力发电厂热工保护系统设计技术规定=TechnicalCodeforDesignofI&CProtectionSysteminFossilFuelPowerPlant:英文/国家能源局发布.—北京：中国电力出版社，2012.2ISBN978-7-5123-2710-8Ⅰ.①D…Ⅱ.①国…Ⅲ.①火电厂-热工操作-保护装置-设计规范-英文Ⅳ.①TM621.4-65中国版本图书馆CIP数据核字（2012）第024868号中国电力出版社出版、发行（北京市东城区北京站西街19号100005）北京博图彩色印刷有限公司印刷各地新华书店经售*2012年4月第一版2012年4月北京第一次印刷850毫米×1168毫米32开本2.25印张52千字敬告读者本书封面贴有防伪标签，加热后中心图案消失本书如有印装质量问题，我社发行部负责退换版权专有翻印必究DL/T5428—2009IContentsForeword·························································································Ⅲ1Scope···························································································12NormativeReferences·································································23TermsandDefinitions,Abbreviations··········································53.1TermsandDefinitions·································································53.2Abbreviations············································································94General······················································································105DesignPrinciplesofProtectionSystem·····································115.1DesignPrinciplesofPowerSupply··············································115.2LogicDesignPrinciples····························································125.3ConfigurationPrinciplesofProtectionSystem·······························145.4Others····················································································186BoilerProtection········································································196.1PartialProtectionforBoiler·······················································196.2BoilerFurnaceSafetyProtection·················································216.3BoilerTripProtection·······························································267BoilerBurnerControl································································337.1IgnitionandCombustion-Supporting···········································337.2PulverizedCoalBurnerControl··················································367.3StartandStopConditionsofCoalMill·········································377.4StartandStopConditionsofCoalFeeder······································387.5StartandStopConditionsofPulverizedCoalFeeder(Exhauster)······398SteamTurbineGeneratorUnitProtection··································418.1PartialProtectionsforSteamTurbine···········································418.2SteamTurbineGeneratorUnitTripProtection·······························42DL/T5428—2009II8.3ProtectionforPreventionofWaterandColdSteamDamagetoSteamTurbine··················································································438.4ProtectionforDeaeratingFeedwaterSystem·································478.5ProtectionforSteamTurbineBypass···········································488.6ProtectionforAirCoolingUnit···················································499Operation,DisplayandSignals··················································509.1Operation···············································································509.2DisplayandSignals··································································5110ProtectionEquipmentandSamplingSystem···························5810.1Instrumentation······································································5810.2FlameScannerandIgnitionGun···············································5910.3Actuator···············································································6010.4ProtectionDevice···································································6110.5SamplingSystem···································································62DL/T5428—2009IIIForewordThiscodeisrevisedaccordingtoCircularoftheGeneralOfficeofNationalDevelopmentandReformCommissionontheIssuanceof2006IndustrialStandardProgram(FGBGY[2006]No.1093).ThiscodeisputforwardbyChinaElectricityCouncil.ThiscodeisinterpretedandunderjurisdictionbyElectricalPlanningandDesignStandardizationTechnicalCommitteeofPowerIndustry.ThiscodeisdraftedbyCPECCSouthwestElectricPowerDesignInstitute.ThiscodeismainlydraftedbyZhangJinbin,XuHuiqiang,YuHaiping,SongChun,ZhangYuandDuShaomao.Thiscodecomesintoeffectsincetheimplementationdate,inlieuofthecompletecontentsofDLGJ116—1993TechnicalRegulationsonDesignofFurnaceSafeSupervisorySysteminFossilFuelPowerPlantandChapterⅥProtectionofNDGJ16—1989TechnicalRegulationsonI