智能電網環(huán)境下電力系統(tǒng)安全穩(wěn)定防御體系及框架研究.pdf

1、東南大學碩士學位論文智能電網環(huán)境下電力系統(tǒng)安全穩(wěn)定防御體系及框架研究姓名：嚴明輝申請學位級別：碩士專業(yè)：電氣工程指導教師：湯奕20120525AbstractABSTRACTWitllthecontinuousconstructionofsmart，一gridinChinaalargescaleofnewenergyaccessingtopowergridaswellaStheemergenceofwideareameasurement

2、systemandothernewtechnologies，thedynamiccharacteristicsofpowersysteminthenewenvironmentbecomemoreandmorecomplexandtheanalysisandcontrolofpowersystemstabilityareincreasinglydifficultTherefore，itisofgreatsignificanceforthe

3、developmentofChinaspowerindustrytoensurethesecurityandstabilityoflargepowergridsandpreventpowersystemcollapseSOaStopreventlargescalepowerfailuresChina’SpowersystemsecuritysystemconstitutesofThreedefence1inesItplaysanirre

4、placeableimportantroleinprotectingpowersystemsafeandstableinChinaInmodempowersystem，thesecurityandstabilityproblemisbecomingmoreandmoreurgent、析ththegridexpandingIt’SnecessarytOestablishadefencesystemofpowergridforsmart酣d

5、Firstlyaccordingtothesecurityandstabilityissuesofthepowersystem，thispapersummarizedthestabilityclassificationofthepowersystemanddescribedthecompositionsofChinassecurityandstabilitydefensesystemofpowersystem，whichismadeup

6、ofthethreedefencelinesThenitsummedupthecausesandlessonsofthelargescalepowerfailuresinrecentdecadesathomeandabroad，describingthedifferencesbetweenthesmartgridandtraditionalpowergridfromstabilityanalysis，controlandotherasp

7、ectsofthepowersystemBesides，itexplainedthenecessitytoestablishthesecurityandstabilitydefencesystemofpowersysteminthenewenvironmentofsmartgddcombiningpoliciesandothersSecondlythetraditionalpowersystemsecurityandstabilityc

8、ontrolastheresearchobject，second—defence—lineandthirddefencelineofpowersystemsecurityandstabilityisexplainedThecontrolmeasuressettingrequirementsofseconddefencelineandthirddefencelinecontrolmeasuresaresummarized，suchasth

9、estabilitycontrolmeaSures，out—ofstepseperation，underfrequencyloadshedding(UFLS)，undervoltageloadshedding(UVLS)，generatoroverspeedcuttingetcThirdlynewchangeswhichpowersystemsecurityandstabilitycontrolfaceswitharesummedupf

10、romseveralaSpectsItanalyzesthelimitationsandadaptabilityofcurrentpowersystemsecurityandstabilitycontrolsystemTypicalproblemswhichpowersystemsecuritystabilitycontrolfaces塒thareanalyzedOnthebasis，correspondingsolutionsarea