ITPCL2ⅹ600MWOperatingProcedure運行規程ElectricMajor電氣專業Preparedby:編寫：程凡房Reviewedby:審核：張圣喜Approvedby:批準：Apr2014

Foreword前言Thisprocedureispreparedforstandardizingoperationalruntoguaranteesafeandeconomicoperationofunit2×600MW.Andthisprocedureispreparedbasingonthereferencelikedata,diagramsandmanualfrommanufacturer,andalsodatafromDesigner,Installerandetc.Andthisprocedureisconsideratedasaworkingaccordanceforrunningandcommissioning,andasalearningmaterialfortrainingprogramofrecruits.Afterpublicationofthisprocedure,relatedtechniciansshallbefamiliarwiththisprocedure.Andthisprocedureisusedforrunningandcommissioningofequipmentsof2×600MWThermalPowerPlantofITPCLofIndia.Thisprocedurecomesintoforcefromthedateofpublication.為保證2×600MW機組安全、經濟運行，規范運行操作，特制定本規程。本規程依據設備制造廠家資料、圖紙、使用說明書，設計院、安裝單位等資料編制。本規程作為運行調試、操作的工作依據，有關技術、運行人員應熟知本規程，同時也作為新入廠員工上崗培訓學習的資料。本規程適用于印度ITPCL2X600MW燃煤電站項目2×600MW機組設備的調試、運行。本規程自發布之日起開始執行。Contents目錄TOC\o"1-3"\uChapterOneOperationregulationsforthegeneratoranditsexcitationsysetm \o"第一篇 發電機及其勵磁系統運行規程"ChapterOneOperationregulationsforthegeneratoranditsexcitationsysetm第一篇發電機及其勵磁系統運行規程1Overview1概述ThegeneratorisQFSN-600-2-22Gtypethree-phase,two-poleandnon-salientpolerotorsynchronousACgeneratordesignedandmanufacturedbyDongfangElectricMachineryCo.,Ltd.Itisdirectlydrivenbytheturbine.Seenfromtheturbineheadtowardsthegenerator,itsrotationdirectionisclockwise.發電機為東方電機股份有限公司設計、制造的QFSN-600-2-22G型三相、二極、隱極式轉子同步交流發電機，由汽輪機直接驅動，其旋轉方向從汽輪機頭向發電機看為順時針。Thegeneratoradoptsthecoolingmodeof“water-hydrogen-hydrogen”,thatis,thestatorwindinganditsleadingwireandoutgoingwireadoptinternalwatercooling,therotorwindingadoptshydrogencoolingandthestatorcoreandendsadopthydrogensurfacecooling.Hydrogenintheenginebaseiscirculatedinaclosedcycleviaaxialfansonbothendsoftherotor.發電機采用“水氫氫”冷卻方式，即：定子線圈及其引線、出線采用水內冷，轉子繞組采用氫冷，定子鐵芯及端部采用氫氣表面冷卻。機座內的氫氣由轉子兩端的軸流式風扇進行閉式循環。GeneratorexcitationsystemisselfparallelexcitationstaticsystemItiscomprisedofExcitationTransformer,siliconcontrolledrectifier（SCR),automaticvoltageregulator（AVR),deexcitationandovervoltageprotectiondevice,startexcitationdevice,necessarymonitor,protectionandwarningdevices.ExcitationsystemisprovidedwithasetofAVRcubical,asetoffieldbreakercubicle,asetoffieldflashingDCoutputcubicle,asetofconvertercubicle,asetofACinputcubicleandthreesetofonephasedry-typetransformer.發電機勵磁系統采用自并勵靜止勵磁系統。系統主要由機端勵磁變壓器、可控硅整流裝置、自動電壓調節器、滅磁和過電壓保護裝置、啟勵裝置、必要的監測、保護、報警輔助裝置等組成。勵磁系統包括一面勵磁調節柜、一面磁場開關柜、一面直流出線柜、三面整流柜、一面交流出線柜和三臺單相干式變壓器。Theexcitationsystemofferedisofstatictype.Excitationtransformerandstaticrectifierwouldbeassembly.ExcitationtransformeristappedofffromthegeneratorbusducttosupplytheexcitationcurrentACfortheexcitationsystem.Thetwo-channelautomaticexcitationregulatorwithpowersystemstabilizerisalsoprovided.Staticconverterswillhaveenoughstandby.Thenumberofparallelbridgesinthepowerconverterisfive.Incaseoffailureofoneofpowerconverter,itwillpermitcontinuousoperationunderallgeneratoroperatingstatusincludingforcingexcitation.Incaseoffailureoftwoofpowerconverter,itcanprovideratedfieldcurrent.Thesystemwillbecapableofsupplyingthefieldforcingrequirementforatleast30seconds.勵磁系統為靜態勵磁。勵磁變和靜止勵磁柜連接。勵磁變直接從發電機出口封閉母線上取交流電源。同時提供雙通道自動勵磁調節器和電力系統穩定器PSS。靜態整流器冗余配置，配置5只整流器。一只整流器故障時，發電機可連續運行，滿足強勵要求。兩只整流橋故障時，滿足額定運行要求。勵磁系統滿足至少30秒的強勵需要。2Equipmentspecifications2設備規范CapacitiesandKeyParametersoftheGenerator:發電機容量和主要參數：ModelNo.QFSN-600-2-22G型號QFSN-600-2-22G額定容量706MVARatedoutput(MW)600MW,額定出力（MW）600MWRatedfrequency(Hz)50Hz額定頻率（Hz50HzRatedpowerfactor0.85額定功率因數0.85Ratedterminalvoltage22kV額定機端電壓22kVRatedrevolution3000rpm額定轉速3000rpmRatedcurrent18524.6A額定電流18524.6ARatedexcitingcurrent4715.64A額定勵磁電流4715.64AExcitingvoltage429.89V勵磁電壓429.89VShortcircuitratio(withoutnegativetolerance)≥0.5短路電流比（不計負公差）≥0.5Statorwindinginsulation/temperatureriseInsulationClassF定子繞組絕緣/溫升F級絕緣Rotorwindinginsulation/temperatureriseInsulationClassF轉子繞組絕緣/溫升F級絕緣2.3Coolingsystemofthegenerator發電機冷卻系統2.3.1Overview2.3.1概述Thehydrogen-oil-watercontrolsystemoftheturbinegeneratorisanauxiliarysystemofthegenerator.Itincludesthreepartswhicharehydrogencontrolsystem,sealingoilsystemandstatorwindingcoolingwatersystem.汽輪發電機氫油水控制系統是發電機的輔助系統。它分為三個部分：即氫氣控制系統，密封油系統和定子線圈冷卻水系統。2.3.2Hydrogencontrolsystem:Itusesdryhydrogenforcoolingtherotorwindingandstatorcoreofgeneratorandreplacesthegasingeneratorbyusingtheintermediatemediumbeforetheunitisstartedoraftertheunitstopsrunning.2.3.2氫氣控制系統：是利用干燥的氫氣對發電機轉子繞組和定子鐵芯進行冷卻；在機組起動前或停止運行后利用中間介質置換機內氣體。2.3.3Sealingoilsystem(alsoknownassealingpadoilsupplysystem):Itguaranteestheuninterruptedpressureoil(alsoknownassealingoil)supplyrequiredbythesealingpadtoavoidthehydrogeninthesealinggeneratorfromleaking.2.3.3密封油系統（或稱密封瓦供油系統）：用以保證密封瓦所需壓力油（又稱密封油）不間斷地供應，以密封發電機內的氫氣不外泄。2.3.4Statorwindingcoolingwatersystem:Itguaranteestheuninterruptedwatersupplyforstatorwindingandmonitorsmanyparameterssuchaswaterpressure,flowandconductivity.Thesystemisprovidedwithanautomaticwatertemperatureregulatortoregulatecoolingwaterinlettemperatureofthestatorwindingandkeepitbasicallystable.Itisprovidedwithanionexchangertoimprovethequalityofcoolingwaterenteringthestatorwinding.2.3.4定子線圈冷卻水系統：用以保證向定子線圈不間斷地供水。監視水壓，流量和電導率等參數。系統還設有自動水溫調節器，以調節定子線圈冷卻水進水溫度，使之保持基本穩定。設置有離子交換器，用以提高進入定子線圈冷卻水的水質。2.3.5Operatingparametersofcoolingsystemofthegenerator:2.3.5發電機冷卻系統運行參數：Name名稱Unit單位Value數值Differentialpressurebetweencoolingwaterpressureandhydrogenpressureingenerator冷卻水壓與發電機氫壓的壓差MPa0.1—0.2Statorcoolingwaterflow定子冷卻水流量m3/h96Statorcoolingwaterinlettemperature定子冷卻水進水溫度℃40-50℃Statorcoolingwateroutlettemperature定子冷卻水出水溫度℃≤85Statorcoolingwaterelectricconductivity定子冷卻水電導率ìs/cm0.5-1.5Statorcoolingwaterpressure定子冷卻水壓力MPa0.1-0.35Numberofhydrogencoolers氫氣冷卻器數目Piece個4Hydrogencoolerwaterinletpressure氫氣冷卻器進水壓力MPa0.35Hydrogencoolerwaterinlettemperature氫氣冷卻器進水溫度℃20-38Hydrogencoolerwaterinlettemperature氫氣冷卻器進水溫度℃≤48Hydrogencoolerwaterflow氫氣冷卻器水流量m3/h4×115Ratedhydrogenpressure額定氫壓MPa0.45Maximumhydrogenpressure最高氫壓MPa0.5Coldhydrogentemperature冷氫溫度℃30-50Hothydrogentemperature熱氫溫度℃≤68Hydrogenpurity氫氣純度%≥98Hydrogenhumidity(dewpoint)氫氣濕度(露點)℃-5～25Generatorcapacity發電機容積m386Generatorhydrogenleakage發電機漏氫量m3/24h≤122.4Permissibletemperaturesofvariouspartsofthegenerator2.4發電機各部分允許溫度Name名稱Unit單位Value數值Statorwindingoperationtemperature定子線圈運行溫度℃≤120Statorwindingalarmtemperature定子線圈報警溫度℃Rotorwindingoperationtemperature轉子線圈運行溫度℃≤115Statorwindingtemperaturedifference定子線圈溫差℃Statorcoreoperationtemperature定子鐵芯運行溫度℃≤120Statorcorealarmtemperature定子鐵芯報警溫度℃Statorterminalstructuretemperature定子端部結構件溫度℃≤1202.5Valuesassociatedwithvibrationofthegenerator發電機振動相關數值BearingbasevibrationvalueattheratedrevolutionUnit單位Normalvalue正常值額定轉速軸承座振動值Verticalmm≤0.025垂直mm≤0.025Horizontalmm≤0.025水平mm≤0.025Axialmm≤0.025軸向mm≤0.025Axlevibrationvalueattheratedrevolution額定轉速軸振動值Verticalmm≤0.076垂直mm≤0.076Horizontalmm≤0.075水平mm≤0.0763Operationrulesofthegenerator3發電機運行規定3.1Generalrules一般規定3.1.1Duringnormaloperation,itisimpermissibletooperatethegeneratorwiththevaluesexceedingtheratingsspecifiedinthenameplate.發電機在正常運行時，不允許超過銘牌的額定數據運行。3.1.2Itisimpermissibletooperatethegeneratorwithoutexcitation.發電機不允許無勵磁運行。3.1.3Whenthegeneratorisbeingoperatedwiththeratedparameters,themaximumpermissiblemonitoringtemperatureshallbedeterminedonthebasisoftheresultofthetemperaturerisetest.Beforethetemperaturerisetestisperformedonthesite,themaximumpermissiblemonitoringtemperatureshallbelowerthanthepermissiblevaluepermissiblevaluepermissiblevaluespecifiedbythemanufacturer.發電機在額定參數下運行，最高允許監視溫度應根據溫升試驗結果確定，現場沒有做溫升試驗前，最高允許監視溫度應低于制造廠的規定允許值。3.1.4Fireworksarestrictlyprohibitedwithin10metersaroundthegeneratorinoperationandwarningsignsshallbeallocatedcompletely.運行中的發電機周圍10米以內嚴禁煙火作業，且警告標示牌定置齊全。3.1.5Whenthegeneratoranditsexcitationsystemisoperatedwiththeratedvoltage,ratedfrequency,thepowerfactorof0.85andthecoolingwatertemperatureofthedesigntemperature,thegeneratorhastheoperationcapacityofcontinuousoutputof630MWoperatingconditionandtemperaturerisesofallpartsofthegeneratordonotexceedthespecifiedvalues.發電機及其勵磁系統在額定電壓、額定頻率、功率因數0.85、冷卻水溫度為設計溫度時，發電機具備連續輸出630MW工況的運行能力，且發電機各部件溫升不超過規定值Conditionsallowingthegeneratortooutputthemaximumcontinuouspowerof630MW:hydrogenpressureof0.45MPa,waterinlettemperatureofthehydrogencoolerof38℃,wateroutlettemperatureofthehydrogencooler≤48℃,coldhydrogentemperature≤40℃andambienttemperatureintheplant≤30℃.發電機允許輸出最大連續功率630MW的條件：氫壓0.45Mpa；氫冷器進水溫度38℃；氫冷器出水溫度≤48℃；冷氫溫度≤40℃；廠內環境溫度≤30℃。3.2Operationruleswhenthevoltage,cyclicwaveandpowerfactorchanges電壓、周波、力率變化時的運行規定3.2.1發電機在額定功率因數，電壓變化范圍為±5％和頻率變化范圍為-5％到＋3％時，能連續輸出額定功率，保證溫升不超過規定的限值10K以上.3.2.2Whenthevoltageofthegeneratordropsbelow95%oftheratedone,thepermissiblecurrentofthestatorduringthelong-timeoperationshallnotexceed105%oftheratedone.當發電機的電壓下降到低于額定值的95%時，定子允許長時間運行的電流不得超過額定值的105%。3.2.3Usuallytheoperatingfrequencyofgeneratorshallremain50Hz.Thegeneratorcanoperatecontinuouswithintherangefrom47.5to50.5Hz.Seethefrequencyvariationandpermissibleoperationtimeinthefollowingtable:3.2.3發電機的運行頻率正常應維持在50Hz，在47.5-50.5Hz范圍內，可連續運行。頻率變化及其允許運行時間見下表：Output輸出Powerfactor功率因數Voltagevariation電壓變化Frequencyvariation頻率變化Overallvariationofvoltagefrequency電壓頻率綜合變化Hydrogencoolerwaterinlettemperature氫氣冷卻器進水溫度Hydrogenpressure氫氣壓力Temperaturerise溫升Ratedoutput:額定輸出0.85(lagging)0.85（滯后）±5%±2%5%38deg.C0.45MPaBGradeB級Ratedoutput:額定輸出0.85(lagging)0.85（滯后）±5%-5~3%5%38deg.C0.45MPaFGradeF級Ratedoutput:額定輸出0.85(lagging)~0.95(leading)0.85（滯后）~0.95（超前）±5%±2%5%38deg.C0.45MPaBGrade+10KB級+10KRatedoutput:額定輸出0.85(lagging)~0.95(leading)0.85（滯后）~0.95（超前）±5%-5~3%5%38deg.C0.45MPaBGrade+10K(continuousrunning)B級+10K（持續運行）VWOworkingconditionVWO工況0.85(lagging)0.85（滯后）±5%±2%5%38deg.C0.45MPaFGradeF級≥0.9(lagging)不小于0.9（滯后）±5%-5~3%5%38deg.C0.45MPaFGrade(theoperationtimeadaptstotherunningstatusofsteamturbineundertheVWOoperatingcondition)F級（運行時間與VWO工況下汽輪機的運行情況相適應）3.2.4Thepowerfactorofthegeneratorshallbethelaggingphaseof0.85andgenerally,notexceed0.95.Whentheautomaticexcitationregulatorisputintouse,itispermissibletooperatewithintherangeof0.95-1.0.發電機的功率因數保持遲相0.85，一般不超過遲相0.95。自動勵磁調節器投入時，允許在0.95～1.0范圍內運行。3.2.5Thegeneratorcanbeoperatedbyreducingthepowerfactor.However,therotorcurrentexceedingtheratedoneisimpermissibleandtheapparentpowershallbereduced.Whenthepowerfactorisincreased,theapparentpowerofthegeneratorshallnotbemorethantheratedone.Whenthepowerfactorischanged,thepermissibleloadshallconformtotheoutputcurveofthegenerator.發電機可以降低功率因數運行，但轉子電流不允許超過額定值，且視在功率應減少，當功率因數增大時，發電機視在功率不能大于額定值，功率因數變化時允許負荷應符合發電機出力曲線。3.2.6Thepermissiblerangeoftheleadingphaseoperationofthegeneratormainlyislimitedbytwofactors:staticstabilityofthegeneratorandheatingoftheendstructureofthestatorcore.Itispermissibletooperatethisgeneratorcontinuouslyattheratedvalueoftheactivepowerandthepowerfactorof0.95(advance)(statorcurrent≤18524.6A).發電機進相運行的允許范圍，主要受發電機靜態穩定和定子鐵芯端部結構發熱兩個因素限制，本發電機允許在有功功率的額定值，功率因數為0.95(超前)的情況下持續運行(定子電流≤18524.6A)。3.2.7發電機具有失磁異步運行能力，但東電不推薦失磁異步運行。3.2.8Normally,thestatorcurrentofthegeneratorshallbesameinthreephases.Undercontinuouslyunbalancedloading,thecurrentdifference(I2)betweenphasesshallnotexceed10%oftheratedvalue(IN)andthecurrentinthelargestphaseshallnotexceedtheratedvalue.Underunbalancedloadinginashorttime,(I2/IN)2t≤10seconds.發電機定子電流正常三相應相同，在持續不平衡負荷時，各相電流之差(I2)，不得超過額定值(IN)的10％，且最大一相的電流不得超過額定值。在短時不平衡負荷時，(I2/IN)2t≤10秒。3.3Operationrulesduringshort-timeoverloadofthegenerator發電機短時過負荷運行規定3.3.1Incasethatthesystemisfailed,toensurethestabilityofthesystem,itispermissibletooperatethegeneratorwiththestatoroverloadandtherotorover-currentforashorttime.However,hydrogenparametersofthegenerator,internalwatercoolingparametersofthestatorwindingandthestatorvoltageshallbetheratedones.在系統故障的情況下，為保證系統穩定性，發電機允許定子短時過負荷、轉子短時過電流運行，但此時發電機的氫氣參數，定子繞組水內冷參數，定子電壓均應保持在額定值。3.3.2S發電機具有一定的短時過負荷能力，能承受1.5倍的額定定子電流歷時30秒，而不發生有害變形及接頭開焊等情況。發電機允許過電流時間與過電流倍數按以下公式計算：（I2－1）t＝37.5s3.3.3Short-timeovercurrentcapacityoftheexcitationwinding(twiceshallnotbeexceededeveryyear)勵磁繞組短時過電流能力(每年不超過2次)Time(second)103060120Overcurrentmultiple2.081.461.251.12時間(秒)103060120過電流倍數2.081.461.251.12Itcanalsobedeterminedviathefollowingformula:(I2-1)t=37.5where:I–overcurrentmultiple,t–overcurrenttime(unit:second)也可按下式確定：(I2-1)t=37.5其中：I--過電流倍數t--過電流時間(單位：秒)3.4Rulesoncoolingmedia冷卻介質的規定3.4.1Normally,inletpressureofstatorcoolingwateris0.1–0.3Mpa.定冷水進水壓力正常為：0.1～0.3Mpa。3.4.2Normally,inlettemperatureofstatorcoolingwateris45±3℃.Whenitishigherthan48℃orlowerthan42℃,thesystemwillalarm.定冷水進水溫度正常為：45±5℃；當高于50℃或低于40℃時報警。3.4.3Theratedflowofstatorcoolingwateris45t/h.Itispermissibletooperatethegeneratoronlyfor30secondswhencoolingwateriscutoffundertheratedload.Ifstatorcoolingwatercannotberecoveredafter30seconds,thegeneratorshallbesplitandtheterminalvoltageshallbereducedtozero.I定冷水額定流量為96t/h。在額定負荷下發生斷水，只允許運行30秒；30秒后定冷水仍不能恢復，則應解列發電機，并降機端電壓為零。3.4.4Intheconditionsofvariousloads,hydrogenpressureshallbeintherangeof0.3±0.02MPa.Duringnormaloperation,itisimpermissibletooperatethegeneratorbyreducingthehydrogenpressure.Whenitisnecessarytooperatethegeneratorbyreducingthehydrogenpressureinspecialconditions,loadshallbecontrolledaccordingtothetablebelowbasedontheoutputdiagramofthegenerator(cosφ=0.85),theminimumhydrogenpressureshallbe0.1Mpaandstatorcoolingwaterpressureandhydrogencoolercoolingwaterpressuremustbeatleast0.04Mpalowerthanthehydrogenpressure.Andthegeneratorshallbeinspectedcompletelyimmediatelytofindcauses,eliminatethefailureandrecoverthehydrogenpressuretonormalassoonaspossible.Ifalotofhydrogenisfoundinthestatorcoolingwatersystem,thegeneratorshallbeshutdownandinspectedimmediately.在各種負荷條件下，氫氣壓力都應維持在0.45MPa范圍內。發電機正常運行時，不允許降低氫壓運行。特殊情況下需降低氫壓運行時，應遵循發電機出力圖按下表控制負荷(cosφ=0.85)，且最低氫壓為0.1Mpa，定冷水壓及氫冷器冷卻水壓必須低于氫氣壓力至少0.04Mpa。并立即全面檢查發電機，查明原因，消除故障，盡快使氫壓恢復正常；若在定冷水系統中發現大量氫氣，應立即停機檢查。3.4.5Intheconditionsofvariousloads,coldhydrogentemperatureshallbeintherangeof30-46℃.Normally,hothydrogentemperatureshallbe≤65℃.Whenthecoldhydrogentemperatureofthegeneratoristheratedvalue,itsloadshallnotbehigherthan1.1timesoftheratedvalue.Whenthecoldhydrogentemperatureishigherthan46℃,thestatorcurrentshallbereducedby2%whenthetemperatureisraisedby1℃.Whenthecoldhydrogentemperatureexceeds50℃,itisimpermissibletooperatethegenerator.在各種負荷條件下，冷氫溫度都應維持在30～46℃范圍內。熱氫溫度正常≤68℃。發電機冷氫溫度為額定值時，其負荷不應高于額定值的1.1倍；當冷氫溫度高于46℃時，每升高1℃定子電流應降低2%；冷氫溫度超過50℃時，不允許發電機運行。3.4.6Duringnormaloperationofthegenerator,fourhydrogencoolersshallbeputintouse.Waterflowandpressureofeveryhydrogencoolershallbebalancedandshallnotbetoolarge.Whenthecoolingwaterinlettemperaturedoesnotexceed38℃,coldhydrogentemperatureshallnotexceed50℃.Whenonecoolerisoutofservice,thegeneratorstillcanbeoperatedcontinuouslywith70%oftheratedpowerwiththetemperaturerisenotexceedingthepermissibleone.Intheconditionthatcoldhydrogendoesnotexceed50℃when10%ofthepipelineforeveryhydrogencoolerisblatchedandcoolingwaterinlettemperaturedoesnotexceed38℃,thegeneratorstillcanbeoperatedcontinuouslywith70%ofthemaximumcontinuouspower.發電機正常運行時，應投入四臺氫氣冷卻器；每個氫冷器的水流量及壓力應均衡，且不宜太大；在冷卻水進水溫度不超過38℃時，冷氫溫度不超過50℃。當1只冷卻器停用時，發電機仍能承擔70%額定功率連續運行，不會超過允許溫升；在每只氫冷器10％管道堵塞時，在冷卻水進水溫度不超過38℃時，冷氫溫度不超過50℃的情況下，發電機仍能承擔70%最大連續功率連續運行。3.4.7Inspecttheinternalhumidityatanytimetomaintaintheinternalhydrogenhumidity≤-5-25g/m3。隨時檢查機內濕度，保持機內氫氣濕度≤-5～25g/m3。(以實際不結露為準)3.4.8Inspecttheinternalhydrogenpurityregularly.Ifthepurityisreducedto96%,dischargecontaminationandaddhydrogen.Theamountofeveryreplacementshallnotexceed10%ofthetotalhydrogenamount.定期檢查機內氫氣純度。若機內氫氣純度降到了96%，應排污補氫；每次置換的氫氣量不應超過10%的氫氣總量。3.4.9Statorcoolingwaterinlettemperatureshallbeatleast2–5℃higherthancoldhydrogentemperature.定冷水進水溫度應高于冷氫溫度至少2～5℃。3.4.10Inanycase,statorcoolingwaterpressureandhydrogencoolercoolingwaterpressureshallbeatleast0.04Mpalowerthanhydrogenpressure.任何情況下，定冷水壓及氫冷器冷卻水壓應低于氫氣壓力至少0.04Mpa。3.4.11Sealoilpressureshallbe0.056±0.02Mpahigherthanhydrogenpressure.密封油壓應高于氫氣壓力0.056±0.02Mpa。3.5Rulesonbearingvibrationandtemperature軸承振動和溫度的規定3.5.1Thepermissiblevalueofthebearingbaseinthedirectionoftwocoordinates(doubleamplitude)shallbenotmorethan0.025mm(guaranteevalue)andbenotmorethan0.10mmbeyondthecriticalspeed.Thepermissiblevalueoftherelativedisplacementoftheshaftvibration(doubleamplitude)shallbelessthan0.076mmandlessthan0.15mmbeyondthecriticalspeed.軸承座在二個座標方向的允許值（雙倍振幅）為不大于0.025毫米（保證值），過臨界轉速時不大于0.10毫米。軸振振動相對位移允許值（雙倍振幅）為小于0.076毫米，過臨界轉速小于0.15毫米。Duringnormaloperationofthegenerator,whentheshaftvibrationis≥0.125mm,thegeneratoralarmsandwhenitis≥0.254,thegeneratorshallbesplit.發電機正常運行過程中，軸振≥0.125mm報警，≥0.254mm解列。Duringnormaloperationofthegenerator,thebearingvibrationshallbe≤0.025mm.發電機正常運行時，軸承振動應≤0.025mm。3.5.2Duringnormaloperationofthegenerator,bearingoilinlettemperatureshallbe35-45℃,oiloutlettemperature<70℃andbushtemperature<105℃.發電機正常運行時，軸承進油溫度應在35～45℃之間，出油溫度應<70℃，軸瓦溫度應<105℃。3.6Rulesoninsulationresistanceofthegenerator發電機絕緣電阻的規定3.6.1Theinsulationresistanceagainstgroundandbetweenphasesofthestatorwinding(withoutwater,dryandclosetotheworkingtemperature)shallbe≥5MΩ(2500Vmegohmmeter).定子繞組(無存水、干燥、接近工作溫度時)，其對地和相間絕緣電阻≥5MΩ(2500V兆歐表)。3.6.2Theinsulationresistanceoftherotorwinding(coldstate20℃andthedeexcitationswitchshallbedisconnected)shallbe≥1MΩ(500Vmegohmmeter).轉子繞組(冷態20℃，應斷開滅磁開關)，絕緣電阻≥1MΩ(500V兆歐表)。3.6.3Itisprohibitedtomeasuretheinsulationresistancebetweenpositiveandnegativeelectrodesoftheexcitationsystemwiththemegohmmetersoastopreventreversebreakdownoftherectifiertube.禁止用兆歐表測勵磁系統的正負極間絕緣電阻，以防整流管反向擊穿。3.6.4Theinsulationresistanceofthethermometricelement(coldstate20℃)shallbe≥1MΩ(250Vmegohmmeter).測溫元件(冷態20℃)，絕緣電阻≥1MΩ(250V兆歐表)。3.6.5Theinsulationresistanceofthestatormanifoldandoutgoinglinewaterinletpipeshallbe≥100KΩwithoutwaterandbe≥30KΩwithwatersupplied(1000Vmegohmmeteroruniversalmeter).定子匯流管及出線進水管，無存水時≥100KΩ，通水時≥30KΩ(1000V兆歐表或萬用表)。3.6.6Theinsulationresistanceoftheexcitation-endbearingandoilsealingagainstgroundshallbe≥1MΩ(1000Vmegohmmeter).勵端軸承、油密封對地絕緣電阻≥1MΩ(1000V兆歐表)。3.6.7Insulationresistanceofvariouspartsshallbemeasuredpriortostartupofthegeneratorafterrepairandoverhaul.大小修后的發電機，在啟動前應測量各部絕緣。3.6.8Resultsfromeverymeasurementshallberecordedintheinsulationresistancelogbookandbereportedtotheshiftsupervisor.每次所測結果應記入絕緣電阻記錄簿內，并匯報值長。3.6.9Ifsomeinsulationresistancevalueisnotcoincidentwiththespecifiedvalue,measuresshallbetakentorecoverit.Ifitcannotberecovered,itsoperationinputshallbeapprovedbythechiefengineer.若某絕緣電阻值不符合規定值，應采取措施恢復；一時恢復不了，能否投入運行應經總工批準。3.7Operationrulesoftheexcitationsystem勵磁系統運行規定3.7.1Theexcitationequipmentshallberemotecontrolledinnormalconditionsandcanbeoperatedlocallyfordebugging,testingoremergencycontrol.正常情況下勵磁裝置應遠控操作；調試、試驗或緊急控制時可就地操作。≥0.9(lagging)不小于0.9（滯后）±5%-5~3%5%38deg.C0.45MPaFGrade(theoperationtimeadaptstotherunningstatusofsteamturbineundertheVWOoperatingcondition)F級（運行時間與VWO工況下汽輪機的運行情況相適應）3.7.2UseadigitalmicrocomputerbasedAVRwhichhasreliableperformanceaswellashardinterfaceandcommunicationinterface(thetypeistobedetermined)withDCS.IthastwomasterredundantcontrollersAandBwhicharecompletelyindependentinrespectofsignalinputandsignaloutputandrespectivelyacceptsemaphoresfromthePTandCTsecondarysides.Whenonechannelbreaksdown,itcanswitchtoanotherchannelautomaticallyandtriggerpulsewithnondisturbancetocontrolthesiliconcontrolledrectifierdirectly.Whentheworkingsystembreaksdown,itcanswitchtothestandbysystemautomatically.Eachmastercontrolleralsohasthemanualexcitationcontrolfunctionwhichissubjecttoautomatictracking.3.7.2AVR采用數字微機型，其性能可靠，并具有與DCS的硬接口和通信接口（型式待定）。它有2個冗余主控制器A和B，兩個主控制器從信號輸入到信號輸出完全相互獨立，分別接受來自不同的PT和CT二次側的信號量，一通道故障時自動切換為另一通道且無擾動觸發脈沖直接控制可控硅整流器。當工作系統故障時，將自動切換至備用系統。每個主控制器還包含手動勵磁控制功能，手動勵磁控制功能具備自動跟蹤功能。AVRhasthefollowingoperationmodes:AVR具有下列運行方式：--Constantvoltageoperationatthecomputerterminal--機端恒壓運行--Constantexcitingcurrentoperation--恒勵磁電流運行--Constantreactivepoweroperation--恒無功功率運行--Constantoperation--恒功率因數運行--No-loadtrackingnetworkvoltageoperation--空載跟蹤網壓運行3.7.3Intheautomaticmodeoftheexcitationsystem,regulatethegeneratorvoltageautomatically.Inthemanualmode,automaticallymaintainconstantexcitationofthegenerator(fieldcurrent).Itisnecessarytoregulatemanuallytheexcitation(thegivenvalueofthefieldcurrent)basedontheloadchangesoastokeepthegeneratorvoltageconstant.Thenon-operatingregulationmodealwaysfollowstheoperatingregulationmodeanddifferentoperatingmodescanbeswitched.Whenthemanualmodeisfailed,latchtheautomatictomanualswitching.Whentheoperationconditionsexceedtheoperationrangeallowedinthemanualmode,themanualregulatorshalllatchthetrackingofthemanualchannel.Inordertoavoidthemanualmodefrombeingswitchedtothefailurestatewhenthefailureisremoved,delaytrackingshallbeadopted.勵磁系統自動方式下，自動調節發電機電壓。手動方式下，自動維持發電機恒定勵磁(磁場電流)；需人為根據負荷變化，來調整勵磁(磁場電流的給定值)，以維持發電機電壓恒定。非運行調節方式總是跟隨運行調節方式，可在不同的運行方式之間進行切換。手動方式發生故障，閉鎖自動到手動的切換；當工況超出手動方式允許的運行范圍，手動調節器閉鎖手動通道的跟蹤。為避免故障切除時手動方式切換到故障狀態，采用延時跟蹤。3.7.4Intheautomaticmode,thegivenvalueofthegeneratorvoltageshallbeadjustedviatheexcitationincrease/decreaseorders.Whenthelimiteracts,stoptheactionoftheexcitationincrease/decreaseordersinthelimitationdirection.Inthemanualmode,thegivenvalueoftheexcitationcurrentshallbeadjustedviatheexcitationincrease/decreaseorders.ThemanualmodeonlyhaslowexcitationlimitationandV/Hzlimitation.Theexcitationincrease/decreaseordersarenotalwaysprotectedbythelimiter.So,itmustbeadjustedmanuallytopreventoverride.自動方式下，發電機電壓的給定值由增磁/減磁命令來調整；當限制器動作，在限制方向上阻止增磁/減磁命令的作用。手動方式下，勵磁電流給定值由增磁/減磁命令來調整；手動方式只有低勵限制和V/Hz限制，增磁/減磁命令不是總能受到限制器的保護，必須人為調整不越限。3.7.5Prerequisitesofexcitationstart:theexcitationswitchintheengagedposition,withoutdisengageorderandtrippingsignal,thespeedofthegeneratormorethan90%oftheratedvalueandwithexcitationpowersupply.完成起勵的前提條件：勵磁開關在合位；無分閘命令和跳閘信號；發電機轉速大于90%額定值；有起勵電源。3.7.6Aftertworegulatorsarefailed,therectifiercabinetshallbeswitchedtothe“manual”modetomaintainthegeneratorvoltagenormal.兩套調節器故障后，應將整流柜切到“手動”方式運行，維持發電機電壓正常。3.7.7The“manual”modeoftheregulatorisnotthenormaloperationmode,soitshallbereportedtotheshiftsupervisorandthechiefengineerforquickdisposal.調節器“手動”方式為非正常運行方式，應匯報值長、總工，盡快處理。3.7.8Whentheexcitationsystemisfailed,theexcitationregulatorwillquitoperationautomaticallyandtheexcitationswitchwillbedisconnected.勵磁系統故障，勵磁調節器將自動退出運行，同時勵磁開關斷開。4Monitoring,inspectionandmaintenanceduringtheoperationofthegenerator4發電機運行中的監視、檢查及維護4.1Monitoringduringtheoperationofthegenerator發電機運行中的監視4.1.1Duringtheoperationofthegenerator,allmetersshallbestrictlymonitoredtoensurecorrectindicationandallparametersnotexceedingthespecifiedvaluesandtheoperationconditionsshallbeanalyzedcarefully.發電機運行中應嚴格監視各表計指示正確，各參數不超過規定值；并認真分析運行工況。4.1.2Theparametersofthegeneratorunderoperationinvariousoperationconditionsshallberecordedeveryhouraccordingtotherulesandcomparedwiththeprintedreport.Ifanydifferenceoccurs,theanalysisshallbeconductedtofindcauses.Ifindividualparametersarefoundabnormal,monitoringonthispointcanbeintensifiedbasedonthespecificconditionsandmeterreadingintervalscanbeshortened.Thisshallbereportedtotheshiftsupervisorandnoticedtotheexaminationandmaintenancepersonnel.每小時應按規定抄錄運行發電機各工況參數，并與打印報表對照。若有差異，應分析原因；若發現個別參數異常，可根據具體情況加強對該點的監視，縮短抄表時間，并匯報值長，通知檢修。4.1.3Duringactiveandreactiveadjustmentofthegenerator,attentionshallbepaidtochangesofvariousparameters.在進行發電機有功、無功調整時，應注意各參數變化情況。4.1.4Maketheoverallmonitoring,reportimmediatelyifanyabnormallyisfoundandadjustasnecessary.全面監視，發現異常及時匯報，并做必要的調整。4.1.5Maketheaccidentanticipationinvariousoperationconditions.做好各種工況下的事故預想4.2Inspectionduringtheoperationofthegenerator發電機運行中的檢查4.2.1Inspectionofthecentralcontrolroomandthedistributionroom集控室和配電室的檢查Indicationsofallmetersshallnotexceedthepermissiblevaluesandcorrelationshallbecorrect.各表計的指示不應超過允許值，相互關系應正確。Positionfeedbackofallknifeswitchesandswitchesshallbeconsistentwiththepositionsindicatedactuallyandcorrect.各刀閘及開關位置反饋與實際指示位置應相符并且正確。Indicationsofthree-phasevoltmeterandammetershallbebalanced.三相電壓、電流表指示應平衡。Audibleandvisualalarmshallworkwithoutanomaly.聲光報警無異常。Relaysandautomaticdevicesshallbenormalwithoutoverheatingandfuming.繼電器和自動裝置應正常，無過熱冒煙現象。Alllightsignalsshallindicatenormally.各燈光信號指示正常。TheDCsystemshalloperatenormally.直流系統運行正常。Theregulatorsshalloperatenorma