简介：Asatypicalcleanandrenewableenergy,windpowerisbecomingmoreandmorewidelyusedinelectricalindustry.However,itscharacteristicsofrandomandintermittenthavebroughtseriousproblemstothepowersystem,suchasvoltagefluctuationandinsufficientreactivepower.BasedontheK-meansclusteringalgorithm,thispaperclassifiesthedoubly-fedinductiongenerators(DFIG)accordingtotheoperationofpropellerpitchanglecontrol.Atthesametime,toobtaintheoptimalparameter,advancedparticleswarmoptimization(PSO)isused.ThenthedynamicmodelofDFIGunderthenetworkfaultconditionisbuilt.Whatismore,therolethatcrowbarcircuitplaysinlowvoltageridethrough(LVRT)isdiscussed.Finally,simulationsinDigSILENTverifythemodel.

简介：Anactiveandreactivecombinedspotpricemodelandthecorrespondingalgorithmareintroducedinthispaperbasedonthetheoryofoptimalpowerflow.Differentfromthetraditionaleconomicdispatchinthefieldofspotprice,theobjectivefunctionistominimizegenerationcostsbasedonpricingreactivepower.Thenconsideringthecharacteristicsofwindturbines,processingmethodsofwindfarmsinoptimalpowerflowisdiscussed.Finally,thefeasibilityofthemodelandthealgorithmisverifiedthroughthesimulationresultsofIEEE30system.