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一种氧化锌避雷器阻性电流的提取方法.docx

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一种氧化锌避雷器阻性电流的提取方法 Title:AMethodforExtractingtheResistiveCurrentofZincOxideSurgeArrester Abstract: Zincoxidesurgearrestersarewidelyusedtoprotectpowersystemsfromlightningstrikes.Whensubjectedtoasurgecausedbyalightningstrike,thesurgearresterexperiencesanincreaseinthecurrentpassingthroughit,whichcancauseadecreaseinthevoltageacrossthesystemandcanevenresultinsystemfailure.Toensureoptimalperformanceofthesurgearrester,itisnecessarytoanalyzeandoptimizeitsresistancecharacteristics.Inthispaper,weproposeamethodforextractingtheresistivecurrentofazincoxidesurgearrester,whichcanbeusedtoimprovetheperformanceofthesurgearresterandultimatelyenhancethestabilityofthepowersystem. Introduction: Lightningstrikesareacommoncauseofpoweroutages,andasaresult,surgearrestershavebecomeanessentialpartofpowersystems.Zincoxidesurgearrestersarewidelyusedasaprotectiondeviceforpowersystemsduetotheirexcellentperformancecharacteristicssuchashighenergyabsorptioncapacity,lowresidualvoltage,andlongservicelife.However,theperformanceofazincoxidesurgearresterisgreatlyinfluencedbytheresistivecurrent,whichplaysakeyroleintheoverallperformanceofthedevice.Inthispaper,weproposeamethodforextractingtheresistivecurrentofazincoxidesurgearresterwhichcanbeusedtooptimizeitsperformanceandenhancethestabilityofthepowersystem. Methodology: Theproposedmethodforextractingtheresistivecurrentofazincoxidesurgearresterinvolvesthefollowingsteps: Step1:Preparethetestsetup Thetestsetupconsistsofavoltagesource,acurrentsource,asurgearrester,andanoscilloscope.Thevoltagesourcegeneratesthetestvoltagewaveform,whichisappliedtothesurgearrester.Thecurrentsourcegeneratesthetestcurrentwaveform,whichisappliedtothesurgearrester.Theoscilloscopeisusedtomeasurethevoltageandcurrentwaveforms. Step2:Measurethevoltageandcurrentwaveforms Thevoltageandcurrentwaveformsaremeasuredusingtheoscilloscope.Thevoltagewaveformismeasuredacrossthesurgearresterterminals,whilethecurrentwaveformismeasuredinserieswiththesurgearrester. Step3:Calculatetheimpedanceofthesurgear