基于灵敏度方法的输电有功运行风险控制

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1、广东工业大学硕士学位论文ABSTRACTWiththerapiddevelopmentofsocietyandeconomy，moreandmoreelectricenergyisneeded，moreflexiblepowersupplymodeswererequiredforloadfluctuation，powersupplyneedstobemorereliabletoo．Thewideuseofnewtechnologyanddevicesontheonehandimprovedpowersystemreliabilitya

2、ndontheothermadethepowersystemismoreandmorecomplex．Inaddition，underthecircumstanceofpowerplantsseparatingfrompowergrids，thepowersourceplanningnotonlyneedscoordinateddevelopmentwithtransmission，butalsopursuesafterenvironmentalprotectionandeconomicoperation．Sopowergridhas

3、developedintoahighlycomplexdynamicsystem，componentsarevariedandabundant，theblackoutrisksufferedfromrandomdisturbancesisincreasing．Thereareseveralblackoutaccidentsallovertheworldinrecentyears，Accidentanalysisshowedthatnotonlyoperationalplansanddevelopmentplanswereneeded，

4、butalsooperationalriskintransmissionsystemshouldbemanagedandcontroliedtopreventthepowersystemfromblackoutaccidents．Themanagementandcontrolontheactivepoweroperationalriskmainlydividsintoactivepowersecuritycorrectionandformulatinglowestriskoperationmode．Generally，regional

5、dispatchdepartmentshavenorighttodispatchgeneratorunits，andfewmeasurescanbetakentOcorrectactivepowersecurity，thesamelimitishappeningtoarrangingoperationmode．Socoordinationassessmentisneededbetweentheunitoutputandpowergridoperation．Accordingtothepracticalsituationinregion

6、alpowergriddispatch，loadtransferisputforwardintoactivepowersecuritycorrectionalgorithminthearticle．Itisrequiredthatheuristicalgorithmbasedonsensitivityandnonlinearplanningalgorithmareneededtomatchloadtransfersimulationintwoways．Theactivecorrectionschemecalculatedbyalgor

7、ithmsinthepapereffectivelyreducesthesystemloadSheddingandimprovesthepowersupplyreliability．Inaddition，decisionvariablesaresettobusactiveload，theminimizingtargetissettOEDNSrisk，whichreflectstheactivepowersecurity，constraintconditionsaresettocompletelyeliminatingthelineov

8、erloadafteraABSTRACTcomponentfailure．Thenthemathematicsmodelcanbebuiltandnonlinearprogrammingmethodisappliedto