1000kV GIS变电站雷电侵入波的分析研究的开题报告.docx

1000kVGIS变电站雷电侵入波的分析研究的开题报告

Title：AnalysisandResearchonLightningIntrusionWavesin1000kVGISSubstation

Introduction:

Asthedemandforelectricitycontinuestoincrease,high-voltagetransmissionsubstationshavebecomeanindispensablepartofthepowergrid.Agas-insulatedsubstation(GIS)isahigh-voltagesubstationthatusescompressedgastoinsulatetheconductorsandequipment.Becauseofitssmallfootprint,highreliability,andlowmaintenance,GIShasbeenwidelyusedinpowersystems.However,duetothesevereweatherconditions,lightningintrusionisaninevitableproblemthatoftenoccursinpractice.Thelightningintrusionwaveproduceshigh-frequencyvoltageandcurrentontheinsulationsurfaceoftheGISequipment,whichmayaffectthesafeoperationofthesubstation.Therefore,itisnecessarytostudythecharacteristicsoflightningintrusionwavesinGISsubstations.

Objective:

Theobjectiveofthisthesisistoanalyzeandresearchthecharacteristicsoflightningintrusionwavesin1000kVGISsubstationsandprovideatheoreticalbasisforthedesignandoperationofthesubstation.

Method:

BasedonthecharacteristicsoftheGISequipmentandthelightningintrusionwave,thisthesismainlyusesthesimulationmethodtoanalyzethelightningintrusionwavein1000kVGISsubstation.Thesimulationmodelofthesubstationisestablishedusingelectromagnetictransientsoftware,andthenthelightningintrusionwaveissimulated.Thecharacteristicsofvoltageandcurrentwaveforms,frequencyspectrum,andtransientresponseoftheequipmentareanalyzed.

Expectedresults:

Basedonthesimulationanalysis,thisthesiswillobtainthefollowingresults:

1.Thecharacteristicsofvoltageandcurrentwaveformsoflightningintrusionwavesin1000kVGISsubstations.

2.ThefrequencyspectrumoflightningintrusionwavesandtheinfluenceontheGISequipment.

3.ThetransientresponseofGISequipmenttolightningintrusionwaves.

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