380V交流接触器不能复归的实例分析

367Vol．36No．720147HuadianTechnologyJul．2014380V273522380V。380V。TM572．2B1674－1951201407－0055－022013－08－122014－04－2312009400m4×2．5mm2220V380V。380VKM420VKM190V。22。E。。331DCSH2HATA3DL。1。1DL12DL。A1UA1、C1UC1220VA2UA2520VA1A2DLUA1－A2610V380VA3A5KM420VKM190V。11DL2、、3。1。1UA2UA2/VKMDL6805105105101UA2520V680V。。·56·3641。DL4×2．5mm21000V400m。0．3μF/kmDL－j26．5kΩ。2。、。CJX8－9380VKM190V1．625kΩj2．8kΩj28．0kΩ。3DL。A1A2DLUA1－A2610V190V。2。2。380V100m。21。1、。250%。2。。5380V、150m21000V3220V110V380V。1974—[e-mail]。1978—欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍欍。1．。2．、。3．。1、。2．dxf．dwg．eps。37cm16cm。4。。5、600。6。。4．Email。7Abstracts·79·AbstractAimingatthefalsetripaccidentofthe10kVlinepro-tectioninan110kVintelligentsubstationtheprotectiondevicesandthesecondarycircuitwereinspectedandthesiterecordfileswereanalyzed．ItwasdeterminedthatthereasonofthefalsetripaccidentisabnormityoftheACcurrentsamplingoftheprotectionandthereasonoftheabnormalACcurrentsamplingisloosenessoftheACplug-incomponentswhichcausesfloatingvoltageincircuit．Atlasttherelevantpreventivemeasureswereproposed．KeywordsintelligentsubstationlineprotectionfalsetripACcurrentsamplingplug-incomponentfloatingvoltage2014－07－42Analysisonreasonsofhighersec-ondarystagerotordisctemperatureofM701FgasturbineandtreatmentmeasuresZHANGJunGuangdongHuizhouLNGPowerPlantHuizhou516082ChinaAbstractThestructureandtheworkingprincipleofM701Fgasturbinewereintroduced．Thereasonsofhighersecondarystagerotordisktemperatureanditsinfluenceontheunitwereana-lyzed．Accordingtoexistedoverhaulexperiencesrelevanttreat-mentmeasuresandimprovementsuggestionswereputforward．KeywordssealringhousingrotordisktemperatureDCTairandsmokecoolingsystemtemperature2014－07－44Ｒemodelingofcondenserof330MWunitandenergy-savingeffectanalysisPANGuangqiangZHENGXiaohongHuadianInternationalShiliquanPowerPlantZaozhuang277103ChinaAbstractInHuadianInternationalShiliquanPowerPlantthecopperpipeofthecondenserleakedfrequentlyandthecon-denserbackpressurewasincreased．Aimingataboveproblemsaccordingtothecomparisonthereformationschemeoftubebundledisplacementwasselected．ThefeaturesoftheTepeetubebankandtheconcretereformationitemswereintroduced．Thecontrasttestoftheperformancesbeforeandafterreformationshowsthattheproblemsoflargercondensatehardnessandhighercondenserbackpressureweresolvedeffectively．Afterthecon-denserhadbeenremodeledobviouseconomicbenefitwasob-tainedtheinvestmentpayoffperiodisonly1．79yearsandthereliabilityoftheequipmentoperationwasimprovedgreatly．Keywordscondenserleakagestainlesssteelpipeenergy-savingreformation2014－07－47Discussionoftechnologyof“mer-gingthreetowersintoone”usedin660MWcoal-firedpowerplantTIANZhiyePlanningandDesignInstituteofForestProductsIn-dustryStateForestryAdministrationBeijing100010ChinaAbstractThedifferencesbetweentheconventionalcoalfiredpowerplantsandthepowerplantsinwhichthetechnology“mergingthreetowersintoone”wasadoptedwereanalyzd．Thefeaturesofthepowerplantsinwhichthetechnology“mer-gingthreetowersintoone”wasadoptedweresummarized．Combiningwithengineeringpracticesomedesignrequirementsofthepowerplantsinwhichthetechnology“mergingthreetow-ersintoone”wasadoptedandproblemsneedingattentionwereputforward．Keywordsmergingthreetowersintoonewetdesulphurizationindirectaircoolingtower2014－07－49Optimizedconfigurationofreac-tivecompensationcapacityofwharfcoalconveyingsystemandimplementeffectsLIQingchangHuadianLaizhouPowerGenerationCompanyLimitedLaizhou261441ChinaAbstractTheworkingconditionofthewharfcoalconveyingbeltsystemandtheoperationstatusoftheexistingreactivecompen-sationdevicewereintroduced．Theseveralfactorsleadingtolowerpowerfactorwereanalyzed．Itwaspointedoutthatthehigherorloweractiveloadandreactiveloadandthedifferencesofthemotorcharacteristicscaninfluenceonthepowerfactorofthesystemdirectly．Basedonthisdependingonthedeepcal-culationanoptimalconfigurationschemeofthereactivecom-pensationwasproposed．Aftertheschemehadbeenimplemen-tedbetterresultswereobtained．Keywordswharfcoalconveyingsystemreactivecompensationcapacitypowerfactoroptimizedconfigurationimprovementschemeimplementeffect2014－07－52ControltechnologyandapplicationofemergencypowersupplyMAHongtaoChinaHuadianEngineeringCorporationLimitedBeijing100160ChinaAbstractTheoriginalcontroltechnicalschemeofemergencypowersupplysystemforHubeiHuadianXisaishanElectricityGeneratingCorporationLimitedwereintroducedencounteredproblemduringimplementingprocessoftheoriginalschemewerediscussedreasonthatcontrolfunctionofemergencypowersup-plysystemcannotbeputintouseandputforwardnewschemeforcontrolofemergencypowersupplysystemwereanalyzed．Af-terimplementationofthenewschemepreferableresulthasbeenachieved．Keywordsthermalpowerplantalternatingcurrentemergencypowersupplycontroltechnology2014－07－55Analysisonexampleof380VACcontactorunabletoresetLINXiguoYANGQianHuadianInternationalZouxianPow-erPlantZoucheng273522ChinaAbstractDuetoloopresonancea380VACcontactorisuna-bletoresetnormally．Theabnormalphenomenonwasanalyzedbynumericalcalculation．Theanalysisresultshowsthatthemainreasonoftheproblemistheinfluenceofthedistr