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220KV变电站GIS设备微水超标分析及处理.docx

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220KV变电站GIS设备微水超标分析及处理 Abstract ThepresenceofmoisturecontentinaGISequipmentin220KVsubstationcanleadtopartialdischarge,breakdown,andothermajorissuesthatcanresultinequipmentfailureandevenpoweroutages.Inthispaper,weanalyzethereasonsforthepresenceofmoisturecontentinGISequipmentandtheimpactithasontheperformanceoftheequipment.WealsodiscussthedifferentmethodsthatcanbeusedtodetectmoisturecontentinGISequipmentandthemethodsthatcanbedeployedforitstreatment. Introduction GasInsulatedSwitchgear(GIS)iswidelyusedinmediumandhighvoltagepowersystemsduetoitscompactandreliabledesign.However,thepresenceofmoisturecontentintheGISequipmentcanleadtopartialdischarge,breakdown,andothermajorissuesthatcanresultinequipmentfailureandevenpoweroutages.Therefore,itisimportanttoanalyzethecausesofmoisturecontentinGISequipmentandthemethodsthatcanbeusedtodetectandtreatit. CausesofmoistureinGISequipment ThereareseveralreasonsforthepresenceofmoisturecontentinGISequipment.OneoftheprimaryreasonsistheingressofexternalmoistureduetoimpropersealingoftheGISequipmentordamagetothesealingmaterial.Anotherreasonisthepresenceofresidualmoistureduringmanufacturingandassemblyoftheequipment.Moreover,humidweatherconditionscanalsoleadtothepresenceofmoistureintheGISequipment. ImpactofmoistureonGISequipment ThepresenceofmoisturecontentinGISequipmentcancauseseveralissues.Itcanleadtopartialdischarge,whichcandamagetheinsulationoftheequipmentandincreasetheriskofequipmentfailure.Moreover,moisturecontentcanalsoleadtodecreaseddielectricstrength,increasedinternalresistance,andreducedreliabilityoftheequipment.Therefore,itisimportanttodetectandtreatmoisturecontentintheGISequipment. DetectionofmoisturecontentinGISequipment ThereareseveralmethodsthatcanbeusedtodetectthepresenceofmoisturecontentinGISequipment.Oneoftheprimarymethodsistheuseofamicro-watercontentanalyzer.ThismethodmeasuresthemoisturecontentinthegasusedinGISequipment.Anothermethodistheuseofahygrometertomeasurethemoisturecontentintheairsurroundingtheequipment.Additionally,infr