《Overvoltage and Insulation Coordination for ±1 100 kV UHVDC Converter Station》.pdf

高电压技术 第 39卷 第 10期 2013年 10月31日 HighVoltageEngineering，Vo1．39，No．10，October31，2013 2477 OvervoltageandInsulationC0000rrdcIlinnaattli00nn1f00rr士±1100KkVV UHVDC ConverterStation ZHOU Hao’ ， DENGXu，WANGDongju。，SHENYang，CHENXilei，SUNKe (1．CollegeofElectricalEngineering，ZhejiangUniversity，Hangzhou310027，China； 2．ZhejiangElectricPowerDesignInstitute，Hangzhou310014，China； 3．Zh~iangCixiPowerSupplyBureau，Cixi315300，China； 4．ZhejiangElectricPowerCompany,Hangzhou310027，China) Abstract：Inordertospecifytheovervolatgeandinsulation1eve1ofequipmentsin士l100kV UHVDCconve~erstations．thearrestercon— figurationschemeandsomebasicparametersfor士l100kV Zhundongconve~erstationareproposed．OvervoltageofequipmentsinAC system，valvehall。DCbusbar,nadneutralbusbararealsocalculatedinaccordancewiththefundamentalprinciplesofarresterconfiguration forUHV converterstationsandtheexistingexperiencesni insulationcoordinationof~800kVUHVDCconverterstations．Theworkisdone alsoforspecifmginsulationlevelsofr士1100kVUHVDCconve~ersattionsofhte土1100kVUHVDCpowertransmissionprojectfrom ZhundongtoSichuaninChina． Thus erecommendedinsulationmarginsthatdeterminethenisulationlevelsofconvegersmfionequip— mentsareproposed： theinsulationmargnisofrthyristorvalvesrae10％／10％／15％ forswitchingimpulse／lightnnigimpulse／steerfront impulse；hteinsulationlevelsoflightingandswtichingimpulsesarerecommendedas2600kVand2 150kVrespectivelyf0r1100kVDC buses．andas2250kVand2100kVrespectivelyforequipmentsatthevalvesideofhigh-voltage conveaertransformers． Keywords：UHVDCpowertransmission；土1100kV；conveaerstation；arrester；ove