IEEEPESSwitchgearCommittee-AnnualReportfor2016Page12017Entity:SwitchgearCommitteeChair:PaulB.
SullivanVice-Chair:ToddIrwinSecretary:KeithFlowersImmediatePastChair:TedOlsen1.
SignificantAccomplishments:OrganizationTheSwitchgearCommitteesixtechnicalsubcommittees(HVCircuitBreakers,HVFuses,HVSwitches,LVSwitchgearDevices,RODE[ReclosersandOtherDistributionEquipment],andSwitchgearAssemblies)haveapproximately30activeworkinggroupsortaskforcespreliminarytoformationofworkinggroup.
TheSwitchgearCommitteesponsorsapproximately60standardsandhaveapproximatelyninenewstandardsindevelopment.
Thelistofactiveworkinggroupsfluctuates,withworkinggroupsdisbandedastheirprojectsarecompleted,andwithnewworkinggroupsformingonacontinuingbasis.
ThefigurebelowshowsthesixtechnicalsubcommitteeplustheSwitchgearCommitteeAdministrativeSubcommittee(ADSCOM)andEducation,Recognition,andPublicationSubcommittee(ERP).
IEEEPowerandEnergySocietyEntityAnnualReportIEEEPESSwitchgearCommittee-AnnualReportfor2016Page2Attheendof2017,Committeeofficersrotatedaccordingtonormalpractice.
SelectionofanewSecretary/Treasureriscomplete.
StandardsActivitiesAnactiveplanisinplacetoreviseanyandallrelevantstandardsthataredueforadministrativewithdrawalattheendof2018,tocomplywiththechangesenactedbyIEEE-SAin2008thatendedreaffirmationsandimposedarequirementtoreviseorwithdrawstandardsthatwerenotrevisedwithintenyearsofapproval.
Whilesomeworkremains,allofthedocumentsduetoexpireattheendof2018willberevisedbeforetheyexpire.
TheSwitchgearCommitteeactivelyworkstoharmonizerequirementsinvariousstandardswiththerequirementsoftherelevantIECstandards.
Atpresent,requirementsforHVcircuitbreakersarefundamentallyharmonizedalthoughnotinterchangeablewithIEC.
RequirementsforotherportionsoftheSwitchgearCommitteestandardsareharmonizedwithIECtovaryingdegrees,determinedprimarilybydifferencesintheuserpracticesbetweentheIECandANSI/IEEEmarkets.
TheSwitchgearCommitteeP&PforstandardsdevelopmentwereacceptedbyIEEE-SAinDecember,2012.
TheWorkingGroupP&PwerecreatedusingthePESTechnicalCounciltemplateinSeptember,2013,andfoundtobewithoutissuebyAudComandtheIEEE-SAStandardsBoardinDecember,2013.
TheoperatingproceduresforthecommitteewereapprovedbythecommitteeatitsApril2015meetingandwereapprovedbythePESTechnicalCouncilinAugust,2015.
TheSwitchgearCommitteeP&PwasupdatedintheFallof2017andsenttoAUDCOMforreview/approval.
TedOlsen(ImmediatePastChair)isleadingthatworkfortheCommittee.
In2017,tenstandards,guides,orrecommendedpracticesupdatedorcreatedbytheSwitchgearCommittee,orco-sponsoredbytheSwitchgearCommitteewereapprovedbytheStandardsBoard.
Theapproveddocumentsandthesubcommitteeresponsibleforthedocumentrevisionsareshownbelow.
HighVoltageCircuitBreakersSubcommittee62271-37-013-2015/Cor1–IEEE/IECInternationalStandardforHigh-VoltageSwitchgearandControlgear–Part37-013:AlternatingCurrentGeneratorCircuitBreakers–Corrigendum1HighVoltageFusesSubcommitteeC37.
14-2016Cor.
1–IEEEStandardDesignTestsforHigh-Voltage(>1000V)FusesandAccessoriesHighVoltageSwitchesSubcommitteeC37.
30.
1a–IEEEStandardRequirementsforACHigh-VoltageAirSwitchesRatedAbove1000V–Amendment1SwitchgearAssembliesSubcommitteeC37.
20.
7–IEEEGuideforTestingSwitchgearRatedUpto52kVforInternalArcingFaultsC37.
21–IEEEStandardforControlSwitchboardsC37.
24–IEEEGuideforEvaluatingtheEffectofSolarRadiationonOutdoorMetal-EnclosedSwitchgearIEEEPESSwitchgearCommittee-AnnualReportfor2016Page3C37.
81–IEEEGuideforSeismicQualificationofClassiEMetal-EnclosedPowerSwitchgearAssembliesC38.
82–IEEStandardfortheQualificationofSwitchgearAssembliesforClass1EApplicationsinNuclearPowerGeneratingStationsWeexpectacomparablelevelofpublishedstandardsdocumentsin2018.
InearlyJanuary2018,theCommitteehad25activestandardsworkinggroups.
ThepublicationofC37.
20.
7wasamajoraccomplishment.
TheGuidewasexpandedtoincludeinternalarcingfaulttestsforlow-voltagemotorcontrolcenters,switchboards,medium-voltageaccontrollers,metal-enclosedbus,metal-enclosedmedium-voltageoutdoorcircuitbreakers,andgas-insulatedswitchgear.
ThisGuidehasadirectimpactonthesafetyofpersonnelwhointeractwiththeequipmentincludedintheGuide.
SomeofourmembersaresignificantcontributorstotheIEEEStandardsAssociationgovernanceprocess.
TedBurseandDougEdwardsweremembersofthe2017StandardsBoard.
DougEdwardswasamemberofAUDCOMandREVCOM.
TedBursewasamemberofNESCOMandtheChairofPROCOM.
FinancialTheSwitchgearCommitteeplansandexecutestheirownmeetingswithsupportfromIEEEMECteamforhotelcontractnegotiation.
Revenuecomesfromregistrationfeeschargesattendeesandfromsupportfromcorporations.
Expensesarethoserelatedtomeetings(catering,audio/visual,socialevents,andsimilar.
)TheSwitchgearCommitteeisinsoundfinancialcondition.
ThisisasignificantimprovementovertheCommitteefinancialconditionlessthan10yearsago.
TheTreasurerprovidesmonthlyreportstoCommitteeofficerstoreportonthehealthoftheCommittee.
Discrepanciesinanyaccountarequicklyidentifiedandresolved.
TheCommitteehasenoughfinancialreservestohandlevaryingmeetingcommitments.
MeetingsTheSwitchgearCommitteeholdstwomeetingseachyear,oneintheSpringandoneintheFall.
Attendanceatthesemeetingsisonanupwardtrend,risingfromaround110participantsin2003toapproximately250peopleatrecentmeetings.
TheSwitchgearCommitteehasanover4%annualincreaseinmeetingattendancesincetheCommitteestartedtrackingattendancein2004.
TheSwitchgearCommitteemeetsoutsidetheJCTMandPESGeneralMeetingandthereforeplanstheirownmeetings.
Contractshavebeensignedforthenextseven,asshownbelow:Spring2018April22-26,2018Disney'sContemporaryResortLakeBuenaVista,FLFall2018October13-18,2018KansasCityMarriottKansasCityMOSpring2019April28-May3,2019HiltonBurlingtonIEEEPESSwitchgearCommittee-AnnualReportfor2016Page4IEEEPESSwitchgearCommittee-AnnualReportfor2016Page5Burlington,VTFall2019October6-10,2019CatamaranResortHotelSanDiego,CASpring2020May4-7,2020PeppermillResortRenoLVFall2020October3-8,2020SheratonFortWorthFortWorthTXSpring2021April19-22,2021HiltonCharlotteUniversityCharlotteNCTheSwitchgearCommitteemeetingplanningprocessnowusesresourcesfromtheIEEEMeetings,Conferences,andEvents(MCE)organization.
MCEpersonnelassistwiththefollowing:Developmentofmeetingspecificationasbasicforrequestforproposal(RFP).
DistributeRFQtomeetingfacility/hotelpropertieswheretheSwitchgearCommitteewantstoholdameeting.
Performinganinitialreviewofallreceivedproposals.
Assistingwithfinalcontractnegotiationswiththechosenmeetingfacility/hotelproperty.
CoordinatingIEEELegalofallSwitchgearCommitteecontractsformeetingvenuesorotheractivities(suchassocialeventsheldoutsideofthemeetingvenues.
)UsingtheIEEEMCEgrouphasbeenasignificantbenefittotheSwitchgearCommitteeinthefollowingways.
ReducesworkloadoftheSwitchgearCommitteeVice-Chairwhoisresponsibleforallmeetingrelatedcontracts.
EnsurestheproperlegalreviewsofallcontractstheSwitchgearCommitteemayenter.
HelpleverageIEEEbuyingpowerbyknowingmeetingvenueswhereIEEEhasacompetitiveadvantage.
TheSwitchgearCommitteehighlyrecommendsotherPESTechnicalCouncilCommitteesconsiderusingIEEEMCEintheireventplanningprocess.
WebsiteTheSwitchgearCommitteewebsitecontinuestobeupdatedtoamoreinterestingformatandcontinuestoincludeaccesstominutesofpastmeetings(from1990todate),andmanytechnicalpresentations.
AtemplatewascreatedthattheSwitchgearCommitteeSubcommitteesusetosubmitupdatedinformationtothewebmastertousetoupdatetheSubcommitteewebsite.
ThetemplatehasprovidedamucheasierandstandardizedmethodforSubcommitteetosubmitupdates.
CentralDesktopSwitchgearCommitteeofficersusesCentralDesktoptostoreimportantCommitteerelateddocumentsincludingitemssuchasmeetingcontracts,meetingplanninginformation,andCommitteeprocedures.
UsingCentralDesktoptostorethisinformationensureseachofficerhasaccesstothedocumentsthatofficermayneed.
Thisreducestheneedtocontactotherofficersandrequestspecificinformation.
IEEEPESSwitchgearCommittee-AnnualReportfor2016Page6TheofficershavefoundthatusingCentralDesktopisanexcellenttoolandhighlyrecommendsotherTechnicalCouncilCommitteesalsoconsideringusingit.
OurStandardsAssociationcontact(ErinSpiewak)cancreateanaccountforanycommitteethatneedsone.
SubcommitteeWorkEachoftheSwitchgearCommitteeSubcommitteesperformsasignificantamountofworktoensuretheirstandardsarerevisedattheproperfrequencyandtocontributetootheractivities.
BelowaresomeexamplesofsomespecificSubcommitteeactivitiesthatwewishtohighlight.
-HVCB–Theycreatedataskforcetostudyshuntreactor(inductiveload)switching.
TheresultsofthattaskforcewillbeusedtohelpimproveHVCBstandards.
-ADSCOM–NenadUzelacleadanefforttocreateanewSwitchgearSubcommitteeforTechnologyandInnovation.
ThatSubcommitteewillbeincludedintheSwitchgearCommitteeOperatingManualandwillhavetheirinitialmeetingattheSpring2018Committeemeeting.
-RODE–CreatedajointtaskforcewiththeIEEESubstationCommitteetoinvestigatethestateoftheartofalternativegasesusedforinsulationinswitchgear.
A120pagetechnicalreportwascreatedandpresentedtothecommitteemembers.
ThereportisalsobeingpublishedinIEEEXplore.
-RODE–Createdanewtaskforceonreclosercontrolcables.
TheinformationfromthetaskforcewillbeincludeinfuturerevisionsofRODEsponsoredstandards.
2.
BenefitstoIndustryandPESMembersfromtheCommitteeWork:TheSwitchgearCommitteecreatesandmaintainsstandardsthatbenefitthestakeholdersinmanyways,includingthese:Users,producers,testingfirms,andthird-partycertificationbodiesbenefitbyhavingperformancerequirementsthatareconsistentandthatgiveconfidencethatproductscarryingequalratingsexhibitequalperformance.
Usersandproducersbenefitbyhavingknownperformance-orientedrequirementsratherthanroteconstructionmandated(butnotnecessarilyperformance-oriented)requirements.
Thisallowsproducerstointroducenewtechnologiesthatproduceequalperformancewithoutconflictingwitharbitrarystandards-mandatedconstructionrequirements.
Users,producers,testingfirms,andthird-partycertificationbodiesbenefitfromhavingrelativelystablestandardsforproducts,asrevisionsofstandardsaregenerallymadeexceptatintervalsofseventotenyears.
Users,producers,testingfirms,andthird-partycertificationbodiesbenefitfromthecreationofnewstandardscoveringareaspreviouslynotaddressedinstandards,suchastestingofequipmentunderconditionsofinternalarcingfaults,specialinterruptingapplicationssuchastransformer-limitedfaults,andconversionsofexistingequipmenttoaccommodatenewertechnologies.
Theguideforinternalarcingtestsisparticularlysignificantasthedocument(C37.
20.
7)hasbeenexpandedovertheyearstocoversignificantlymoreequipmentvarieties,providingaconsistentsetoftestingrequirementsoverarangeofproducttypes.
IEEEPESSwitchgearCommittee-AnnualReportfor2016Page73.
BenefitstoVolunteerParticipantsfromtheCommitteeWork:Participationinstandardsactivitiesprovidesasolidbasisforeducationofnewparticipants,whileprovidingaforumtocapturetheknowledgeofexperiencedparticipants.
TheSwitchgearCommitteehasparticipationbyasignificantnumberofpersonswhohaveformallyretiredfromthebusinessworld,yetcontinuetoparticipate,inseveralcaseswithoutfinancialsupportfromtheirformeremployerorsomeotherfirm.
Itisreasonabletosurmisethatsuchindividualswouldnotdosoexceptthatparticipationprovidesthemsomemeasureofsatisfaction.
Participantsinthestandardsprocessbenefitfromrecognitionwithintheiremployerorganizationsas"experts"intheirtechnicalfield,andparticularlyiftheyparticipateinsomeofficercapacityinworkinggroupsorinthecommitteestructure.
TheSwitchgearCommitteeprovidesrecognitiontoworkinggroupmembersandcommitteeofficers,typicallywithaplaque.
Whenstandardsarepublished,theparticipantsarealsorecognizedinthefrontmatterofthedocument.
TutorialsareprovidedateachSwitchgearCommitteemeeting.
Thisprovidesmeetingparticipantstogetfreetrainingoncurrenttopics.
SwitchgearCommitteememberswhoareexpertsintheirfieldtypicallyprovidethetraining.
TheSwitchgearCommitteerecommendsthatthepromotionofsuchbenefitstopotentialparticipants,particularlyuserswhostruggletosecuremanagementsupportforCommitteeactivities,bothfinancialandtime.
TheSwitchgearCommitteehastakenactiontosupportparticipantswithasimpleone-page"brochure"detailingthevirtuesofCommitteeparticipationaswellasajustificationlettertemplatethatmaybeusedbyparticipants.
4.
RecognitionofOutstandingPerformance:Education,Recognition,andPublication(ERP)Subcommitteeoverseesalltheactivitiesrelatedtonominations,recognitions,awards,prizes,andcertificatesofappreciationforexceptionalindividualsandgroups.
AnnuallyERPconsidersnominationsforthefollowingawards:PESPrizePaperawardPESOutstandingWGawardPESAwardforoutstandingStandardorGuideTCawardforprizepaperTCawardforoutstandingservicetotheCommitteeTCawardforoutstandingWorkingGroup.
TheWorkingGroupforIEEEStdC37.
14receivedthePESTechnicalCommitteeWorkingGroupaward.
In2017weelevated14newpeopletomembersoftheSwitchgearCommittee.
ThiswasinrecognitionofthecontributionsfromeachindividualalongwithrecommendationsfromSubcommitteeChairs.
WealsoelevatedthreepeopletoHonoraryMember.
Inadditionalloutgoingofficers,includingsubcommitteechairs,arepresentedwithcertificatesofappreciation.
ERPstimulatesandencouragesnominationsforSeniorMembershipofIEEEandIEEEFellows.
ArecentpushtoencourageCommitteememberstobecomeSeniorMembershasresultedinnumerouspeopleIEEEPESSwitchgearCommittee-AnnualReportfor2016Page8receivingthataccomplishment.
NineteenSwitchgearCommitteepeoplewereelevatedtoSeniorMemberin2017.
SeniorMembersarerecognizedthroughspecialribbonsonnamebadgeswornduringtheCommitteefacetofacemeetings.
ERPcontinuestoworktonominateappropriateSwitchgearCommitteeattendeesforIEEEFellow.
Inaddition,ERPoverseesthepaperreviewprocessforallpapersthatrelatetoSwitchgearCommitteetechnicalareas,whetherforconferencessuchastheIEEEPEST&D,thePESGeneralMeeting,forTransactions,orotherpublications.
5.
CoordinationwithOtherEntities(PESCommittees,CIGRE,standards,etc.
):SwitchgearCommitteekeepsacloseliaisonwithCIGREStudyCommitteeA3(HighVoltageEquipment).
NenadUzelacisanofficialUSRepresentativetoCIGRESCA3aswellastheliaisonbetweenIEEESwitchgearCommitteeandCIGREA3.
AnumberofprojectsandstandardsareinprocessorpublishedthatarejointeffortswithotherIEEEPESsponsorsorwiththeIEC.
Amongtheseare:IEC62271-111/IEEEC37.
60,duallogoIEEE/IEC,Highvoltageswitchgearandcontrolgear–Part111:Overhead,pad-mounted,dryvault,andsubmersibleautomaticcircuitreclosersandfaultinterruptersforalternatingcurrentsystemsupto38kV.
(revisioninprocess)PC37.
20.
9,MetalEnclosedSwitchgearRated1kVto52kVIncorporatingGasInsulationSystems,co-sponsoredbyIEEEPESSubstationsCommittee(projectinprocess)C37.
122,HighVoltageGas-InsulatedSubstationsRatedAbove52kV,sponsoredbyIEEEPESSubstationsCommittee,co-sponsoredbyIEEEPESSwitchgearCommittee.
IEC62271-37-082,duallogo,IEEE/IEC,High-voltageswitchgearandcontrolgear-Part37-082:Measurementofsoundpressurelevelsonalternatingcurrentcircuit-breakers.
IEEEC37.
301,PartialDischargeMeasurements.
AworkinggrouphasbeenformedandPARwillbesubmittedforreviewandupdateofthisdocument.
MembersfromHVTTparticipatedinthefirstWGmeetingandhavebeeninvitedtotakeanactiveroleintheWG.
6.
NewTechnologiesofInteresttotheCommittee:Thecommitteehasseveralprojectsortaskforcesinvolvedinnewtechnologies:DavidPeelo,HVCBSubcommitteemember,presentedatutorialtitledShuntReactorSwitching;TheoryandPracticeattheIEEEPEST&DConference.
ThattutorialwassponsoredbytheSwitchgearCommittee.
Thesoliddielectrictaskforce(SDTF)isexploringmaterials,applicationandenvironmentalconditions,andtestsfornewinsulationsystemsinwhichinsulationismoldedasanintegralelementofanassemblythatincludestheinterruptingorswitchingdevice,e.
g.
,suchasforanoutdoordistributionrecloser.
Thetaskforceanticipatesissuingtheirfinalreportinthenearfuture.
Taskforceforcontrolsfordistributionequipmentisdevelopingatechnicalreportwithrecommendationsformicroprocessor-basedcontrolsforequipmentover1000Vacupto38kVacforoverheadandundergrounddistributionlines,includingtestandapplicationinformation.
Suchcontrolstypicallywouldincludetheprotectionassociatedwiththeswitchingdevice,aswellastheIEEEPESSwitchgearCommittee-AnnualReportfor2016Page9controlsdevices(open,close,etc.
)withcommunicationscapability.
Thecontroldevicewouldserveinplaceoftraditionalrelaysandcontroldevicesthatareappropriateforhighvoltagecircuitbreakersbutnotsuitablefordistributionequipmentmountedonpowerpolesorbelowgrade.
CompletionofthereportisanticipatedintheSpringof2016.
DuetoincreasinginterestinSF6-freesolutionsforhighvoltageswitchgearaswellaspromisingdevelopmentsinavailabletechnology,theCommitteehasformedaTFonAlternativeGasses.
Theobjectiveofthetaskforceistocreateawrittenreport(whitepaperformat)andpresentbacktoSGADSCOMin2017.
Thescopeofworkoftaskforceislimitedto:LiteratureReview(lasttwoyears),Outlineaspectsforconsideration(technical,environmental,safety…),reviewofIEC,CIGRE,CurrentZeroclubactivitiesonalternativegasses,reviewIEEEstandards–aretheytransferabletonon-SF6andrecommendationforthenextsteps.
Astudygrouphasbeenformedtoreviewpotentialneedforatechnologyandinnovationsubcommittee.
ThestatedgoalistoreviewwaytoaddresstheSwitchgearCommitteeactivities,OrganizeTechnicalSessions,PrepareandReviewTechnicalPapersandFurthertheArtofpowerengineering.
ThestudygroupreportedtoADSCOMandbelievestheformationofthenewSubcommitteewouldbenefittheCommittee.
TheSwitchgearCommitteeOperatingandProceduresmanualwillbeupdatedwiththescopeofthisnewsubcommitteeandsubmittedtothePESTechnicalCouncilforreview/approval.
7.
SignificantPlansfortheNextPeriod:TheCommitteehasthefollowingsignificantplansfor2018.
ContinuetomaintainfinancialstabilityoftheCommittee.
ContinuetoplanandholdtwofacetofaceCommitteeeachyearatlocationsthatattractmeetingparticipation.
UpdatetheCommitteeP&PforstandardsdevelopmentwhentherevisedP&Ptemplateisavailable.
ThecurrentCommitteeP&PwasapprovedinDecember2012andisrequiredtobeupdatedatleastevery5years.
TheCommitteewillsubmitanupdateP&PoncethePESTechnicalCouncilissuesanewP&PnewtemplateandtheCommitteecanenterappropriateCommitteeinformation.
TedOlsen,SwitchgearCommitteeImmediatePastChair,hascontributedsignificantlytothedevelopmentofarevisedP&P.
Continuetomonitorstandardsscheduledforwithdrawalin2018toassurethatongoingprojectsarecompletedbeforewithdrawal.
CurrentlyallCommitteesponsoredstandardsareontrackforrevisionbeforetheendof2018.
Workwithselectedsubcommitteeshavingaheavyworkloadofstandardstoberevisedtoassurethattheworkloadcanbehandledwithintheavailableresourcesandtime.
Thisrequiresthatprojectsneedtobecompletedwithinthefour-yearvalidityofaPAR.
ContinueworktofurthermarketCommitteemeetingparticipationinthestandardsdevelopmentprocess.
Committeegrowthhasaveragedover5%annualincreaseforover10yearswithattendanceofapproximately250peopleatrecentmeetings.
8.
GlobalInvolvementPESislookingtoincreaseinvolvementwithmembersfromRegions8,9and10(Africa,Europe,MiddleEast,LatinAmerica,AsiaandPacific).
Pleaseprovidethefollowinginformation.
IEEEPESSwitchgearCommittee-AnnualReportfor2016Page10TotalNumberofcommitteemembersOfficersfromregions8,9and10Subcommitteeofficersfromregions8,9and10Subcommitteemembersfromregions8,9,and1070000Submittedby:PaulB.
Sullivan,ChairIEEEPESSwitchgearCommitteeDate:March8,2018
OneTechCloud发布了本月促销信息,全场VPS主机月付9折,季付8折,优惠后香港VPS月付25.2元起,美国CN2 GIA线路高防VPS月付31.5元起。这是一家2019年成立的国人主机商,提供VPS主机和独立服务器租用,产品数据中心包括美国洛杉矶和中国香港,Cera的机器,VPS基于KVM架构,采用SSD硬盘,其中美国洛杉矶回程CN2 GIA,可选高防。下面列出部分套餐配置信息。美国CN...
spinservers怎么样?spinservers大硬盘服务器。Spinservers刚刚在美国圣何塞机房补货120台独立服务器,CPU都是双E5系列,64-512GB DDR4内存,超大SSD或NVMe存储,数量有限,机器都是预部署好的,下单即可上架,无需人工干预,有需要的朋友抓紧下单哦。Spinservers是Majestic Hosting Solutions,LLC旗下站点,主营美国独立...
在刚才更新Vultr 新年福利文章的时候突然想到前几天有网友问到自己有在Vultr 注册账户的时候无法用支付宝付款的问题,当时有帮助他给予解决,这里正好顺带一并介绍整理出来。毕竟对于来说,虽然使用的服务器不多,但是至少是见过世面的,大大小小商家的一些特性特征还是比较清楚的。在这篇文章中,和大家分享如果我们有在Vultr新注册账户或者充值购买云服务器的时候,不支持支付宝付款的原因。毕竟我们是知道的,...
powerbydedecms为你推荐
phpcms模板请教 phpcms v9 如何设置新模板为系统默认模板?flashwind下载了那个FlashWind极速旋风还需要安装吗?怎么安装?怎样使用?mediawikimediawiki 怎么开启 visual editer 可视化编辑器php计划任务php定时任务,只执行一次,不要死循环什么是支付宝支付宝是什么意思internetexplorer无法打开电脑的Internet Explorer打不开?300051三五互联170号段和三五互联什么关系中国保健养猪网中央7台致富经养猪团购程序团购的流程有哪几种模式怎样发帖子怎么发帖啊,
pccw sugarsync 密码泄露 info域名 好看的桌面背景图片 租空间 日本bb瘦 柚子舍官网 新家坡 双12 360云服务 cloudlink 域名与空间 网站加速软件 lick 美国盐湖城 免费个人网页 买空间网 国内空间 七十九刀 更多