基于短路電流約束的分布式電源準(zhǔn)入容量計(jì)算的研究

1、湖南大學(xué)碩士學(xué)位論文基于短路電流約束的分布式電源準(zhǔn)入容量計(jì)算的研究姓名：連欣樂申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電氣工程指導(dǎo)教師：吳政球20080419基于短路電流約束的分布式電源準(zhǔn)入容量計(jì)算的研究AbstractAtpresent，centralpowergeneration，long—distancetransmissionsystemandinterconnectedpowefsystemisthemainmodeofelectricity

2、generation，tfansmissionanddistribution，andissupplyingpowerfor90％loadThissystemwhichhasmoreandmorepowerhasitsadvantage，buttherearesomedisadVantagesWiththeincreasingpeakvalleyloaddifference，loadrateinpowersystemisdecreasin

3、geveryyear，andtheusingrateofgeneratingandtransmittingestablishmentsisonadownwardtrendPowersystemlarger，theprobabilityofaccidentshigherInthelargeinterconnectedpowersystem，localaccidentsalwaysresultinalargeblackoutSodistri

4、butedsourceinstallingaroundtheuseristhesubstitutedmode，enhancingthesystemofflexibility，securityandfeliabilitySo，itisimportantandsignificantbothinthetheoryandpracticetostudyDGWiththedistributedgenerationconnectedintothene

5、twork，thepowerflowandshort—circuitcurfentintheutilitydistfibutionnetworkwillbechangedDistributionprotectionsystemisdesignedbywayofradialtypeofasignalsource，DG’sinterconnectionmakesdistributionnetworkintoamultisourcenetwo

6、rkwhichcausetheprOtectionsystemnOttoworknormallyThispapefstudiesthisissueandsetaboutitInthispapertheconceptandcharacteristicofdistributedgenerationisintroducedandsomeconcernedtechnologiesinthisfieldaredescribedinbriefWit

7、htheanalysisofitspossibleinnuenceonthepresentpowersystem，thlspapermainlVdiscussestheeffectofdistributedgenerationonthedistributedprotectionBasedonthese，anoptimizationmethodisproposedforcomputingthemaximumpenetrationlevel

8、ofDG，takingintoaccountfaultcurrentconstraintswhileexistingdistributionnetworkprotectionshouldnotbeadjustedasmuchaspossibleThefaultcalculationprincipleinthedistributionnetworkwithdistributedgenerationisanalVzedAmathematic

9、almethodolOgycOnVertingconstraintsimposedbyfaultlevelstosimplenonlinearinequalityconstraintsisdevelopedThefeasibilityoftheproposedmethodisshOwedbyexamplesofasingledistributedgenerationsystemandamultipledistributedgenefat