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1、ESL-IE-00-04-26StudiesinPowerQualitySuccessBrianA.Laan,AssociateEnergySpecialist,CaliforniaEnergyCommission,Sacramento,CaliforniaABSTRACTrepetitivevoltagepeakingispresent,systemTheCaliforniaEnergyCommissionisactivelyreliabilityiscompromised.supportingresearchanddevelopmenttoimprov
2、epowerquality.PoorpowerqualitycanresultinIncreaseddistributedgenerationcanchangetheproductivitylossesandcompromisesafety.Dealingcharacteristicsoftheelectricitydeliverysystemwithpowerqualityproblemswhentheyarisecansubstantiallyoverthenexttentotwentyyears.solvetheimmediateproblem,bu
3、tprovideslittleFurthercomplicatingthepicture,deregulationissecurityinoverallsystemreliability.However,amakinghourlypowerpurchasingdecisionspossible,systematicapproachtounderstandingtheresultinginmorefrequentshiftsinpowerdemandsusceptibilityofequipment,thecurrentlevelofandsupply.Bo
4、thofthesechangescanhaveapowerqualityandthetypesofcorrectiveorprofoundeffectonpowerqualitybyvirtueofmitigationmeasuresavailable,permitscosteffectiveincreasedcomplexityofthesystemsimpedanceandsystemdesign.Energyproviders,toreducetheloaddynamics.Itisthepurposeofthispapertoeffectsofvo
5、ltagesags,voltagepeaks,andharmonicprovidesomeinsightintotheneedforimprovedcontentarefundingresearchanddevelopment.powerqualityandhowenergyprovidersandusersDeregulationandincreaseddistributedgenerationiscanplayaroleinthedevelopmentofasystemthatalsospurringresearchintomorecomplexmee
6、tsourneedsforyearstocome.transmissionanddistributioncontrolsystems.Energyproviders,industry,governmentandsupportVOLTAGESAGSANDOUTAGESorganizationsneedstrongcollaborativeeffortstoMomentaryvoltagesagsandsteadystateimprovepowerqualityandreliability.undervoltageconditionscanoccurforan
7、umberofreasons.Steadystateundervoltageconditions,oftenOVERVIEWtennedasbrown-outscanhappenduringpeakloadIndustryiscurrentlydealingwithanumberoftimesfortheelectriccustomerontheendofalongpowerqualityconcerns.Thelargeincreaseintheuseradialdistributionfeeder.Manydistributionofsensitive
8、electronicequipmentoverthelastthi
