基于動態(tài)等值法的影響電網(wǎng)頻率動態(tài)特性因素分析.pdf

1、東北電力大學(xué)碩士學(xué)位論文基于動態(tài)等值法的影響電網(wǎng)頻率動態(tài)特性因素分析姓名：王剛申請學(xué)位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導(dǎo)教師：黎平20060301AbstractTheinvestigationoffrequencydynamicsoflargescalemultimachineelectricpowersystemsincircumstancesofsuddensupplydeficiencyisthebasisofthedesi

2、gnoftheunderfrequencyloadsheddingschemeofpowersystemsInrecentyears，greatattentionhasbeenpaidtOitWiththedevelopmentofpowersystem，therearemoreandmorefactorsthataffectdynamicfrequencycharacteristicsthatmakeitmoreandmorecomp

3、licatedThemethodthatusesingle—generatorto—loadmodeltoanalyzefrequencydynamicscannotsuitforactualsystemAnalyzingthefactorsthataffectfrequencydynamicsinmodempowersystemisingreatneedOnthebasisofanalysisandcomputationoffrequ

4、encydynamicscharacteristicsoflargescalemultimachineelectricpowersystems，themainpurposeofthispaperisanalyzingfactorsthataffectdynamicfrequencycharacteristicsofnortheastchinapowersystemswithlargesofdigitalsimulationsofequi

5、valentnortheastchinapowersystembyPSASPunderdifferentdisturbanceconditionsAndthispaperalsoanalyzesthattheeffectofdisturbancelocationsonfrequencydynamics、thephenomenaoffrequencyoscillationsanddistributionsandthepropagation

6、soffrequencydynamics，andthenthesensitivitiesofsystemfrequencytogeneratorfrequencycoefficient、momentofinertiaandregulationdeadbandhasbeenachievedandsupportstherationalefordesignofunderfrequencysheddingschemesOnthebasisofa

7、bovetheoriesanddigitalsimulations，thispaperalsointroducestraditionalUFLSschemeindetail，andthesoftwareforunderfrequencyloadsheddingwasdevelopedtocheckUFLSschemeofnortheastchinabytheusermodelofPSASRThesimulationresultsshow