简介:摘要:本文提出智能型配电变压器管理系统,发展智慧变压器终端(Intelligent Transformer Terminal Unit,iTTU)应用于配电变压器运转状态的监测与供电量收集,并可将变压器过载及可能窃电的异常状态,作即时回报以避免变压器烧毁。本文设计的变压器终端包含电源供应电路单元、温度测量单元、电能测量单元、数据处理单元、嵌入式系统与通讯模块。借由测量变压器的用电及油温等数据,通过电力线载波或通讯方式传回至主站进行即时监控,另外应用嵌入式系统可在变压器发生过载时,通过需求量反应控制机制,根据用户所设定的负载类型进行卸载。当变压器管理系统在执行变压器异常运转数据回传后,其主站系统亦可将该具变压器连同其运转数据,即时显示于自动地理信息系统。
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。