简介:Anumericalapproachtotheevaluationofuncertaintyinnonconventionalmeasurementsonpowersystems,Asimplemethodforcalculatingwindingtemperaturegradientinpowertransformers,Ageingandlife-managementofpowertransformers,Aninvestigationintotheinternalovervoltagesgeneratedbydisconnectorsingasinsulatedsubstations
简介:1ATMSUBCOOLEDLIQUIDNITROGENCRYOGENICSYSTEMWITHGM-REFRIGERATORFORAHTSPOWERTRANSFORMER;Acontactlesselectricalenergytransmissionsystemforportable-telephonebatterychargers;Acurrent-basedsolutionfortransformerdifferentialprotection-PartⅡ:relaydescriptionandevaluation;Aforwardconvertertopologyemployingaresonantauxiliarycircuittoachievesoftswitchingandpowertransformerresetting;Anewmethodbasedonwaveletpackettransformationtoreducenarrowbandnoiseinon-sitePDmeasurement;ANewMethodfortheCalculationoftheHot-SpotTemperatureinPowerTransformersWithONANCooling;
简介:Analyticalmodelofironlossesinpowertransformers,ANN-basedharmonicrestraintdifferentialprotectionofpowertransformer,Applicationofradialbasisfunctionneuralnetworkfordifferentialrelayingofapowertransformer,Automaticdiagnosisoffaultlocationsinpowertransformerimpulsetestusingself-organizingmap,Back-upalgorithmforsinglepowerdistributiontransformercontingency,Chaosinpowertransformersincludingthecorehysteresis,Characterizationofvibrationsignalsusingcontinuouswavelettransformforconditionassessmentofon-loadtap-changers。
简介:摘要电力变压器是电力系统中极其重要的电气设备,它在整个电力系统中起着能量和电压转换的作用。它的运行是否安全,直接关系到电力系统能否连续稳定地运行。鉴于电力变压器在系统中的重要性,电力变压器的保护一直受到世人的重视和关注。随着电力系统规模的不断扩大和它在国民经济中地位的不断提升,对其可靠性和快速性方面提出了更高的要求。