10kv線路過(guò)電壓保護(hù)器應(yīng)用研究

1、Y1213298洳專：j～碩士學(xué)位論文⑧論文題目：lOkV線路過(guò)電壓保護(hù)器應(yīng)用研究作者姓名鹽睦選指導(dǎo)教師一周造學(xué)科(專業(yè))墊氫三蕉所在學(xué)院塾氫三堡堂區(qū)浙江大學(xué)碩士學(xué)位論文AbstractInrecentyears，alongwiththereconstructionofourcountry’Slarge—scalecityandcountrysideelectricalsystem，powerdistributionsystemsinm

2、oreandmorecitiesareizsingoverheadinsulatedconductorlinesSolvingtheproblemofbrokenlinefaultbylightningproperlytoguaranteetheinsulationdistributionsystemoperatingsafelyhasalreadybecomeveryurgentinZhejiangProvinceandeVC$1in

3、thenationaldistributionnetworksystemInthisthesis，firstlythemechanismof10kVoverheadinsulatedconductorbrokenlinefaultbylightningandsomeexistingmainpreventingmethodsareintroducedThendetailedresearchesareperformedonperforman

4、cesofovervoltageprotectorwhichisadevicepreventingbrokenwirebylightningstriketooverheadinsulatedconductorTheymainlycontains：researchesonattesterperformanceparametersofovervoltageprotectorseriesconnectedgapperformanceparam

5、etersofovervoltageprotectorthefunctionofovervoltageprotectortolimitthelightninginducedovervoltagesindistributionlines，theinstallingdensityofovervoltageprotectorandtheprotectioneffectofovervoltageprotector；experimentalstu

6、diesonlineovervoltageprotectors；theoreticalsimulationresearchesontheprotectionperformancesoflightningovervoltageprotectorinoverheadlinesThroughtheanalyses，thefollowingconclIIsionsaremade：promptlyshuttingoffthepowerfreque

7、ncycurrentflowingafterthelightningcurrentisthebasicmethodtopreventthebrokenlineaccidentstruckbylightningonoverheadinsulatedconductorlinesOvervoltageprotectorscomposedofseriesconnectedgapandthelightningarresterhavehighero

8、peratingreliabilitywhichisthemaindevelopingdirectionatpresentAtleastoneovervoltageprotectorshouldbeinstalledbetweentwoadjacenttowers，whichcanachievebetterprotectioneffectIfcomprehensiveprotectionsareneeded，overvoltagepro

9、tectorsm11StbeinstalledoneachtowerIthasbeenprovedbyoperatingexperiencesofoverseasandonedomesticpowersupplybureauthatovervoltageprotectorsCaneffectivelyprotectoverheadinsulatedconductorlinesfromlightningtripsandbrokenline