电力变压器中英文

1电力变压器电力变压器是一种静止的电气设备，是用来将某一数值的交流电压（电流）变成频率相同的另一种或几种数值不同的电压（电流）的设备。当一次绕组通以交流电时，就产生交变的磁通，交变的磁通通过铁芯导磁作用，就在二次绕组中感应出交流电动势。二次感应电动势的高低与一二次绕组匝数的多少有关，即电压大小与匝数成正比。主要作用是传输电能，因此，额定容量是它的主要参数。额定容量是一个表现功率的惯用值，它是表征传输电能的大小，以kVA或MVA表示，当对变压器施加额定电压时，根据它来确定在规定条件下不超过温升限值的额定电流。较为节能的电力变压器是非晶合金铁心配电变压器，其最大优点是，空载损耗值特低。最终能否确保空载损耗值，是整个设计过程中所要考虑的核心问题。当在产品结构布置时，除要考虑非晶合金铁心本身不受外力的作用外，同时在计算时还须精确合理选取非晶合金的特性参数。国内生产电力变压器较大的厂家有Satons，中电电气，保变天威，西电集团，山东晨宇电气，山东电力设备厂等。Powertransformerisakindofstaticelectricalequipment,isusedtoconvertacertainnumberofACvoltage(current)intoafrequencyofthesameordifferentkindsofnumericalvalueofdifferentvoltage(current)equipment.Whenawindingisconnectedtoalternatingcurrent,it2generatesanalternatingflux,andthealternatingfluxthroughtheironcore,andtheelectricpotentialisinducedinthetwowindings.Thetwoinductionelectromotiveforceisrelatedtothenumberoftheoneortwowindingturns,thatis,thevoltageisproportionaltothenumberofturns.Themainfunctionistotransmitpower,andtherefore,theratedcapacityisthemainparameter.Ratedcapacityisamanifestationofthevalueofconventionalpower,itisacharacterizationofthepowertransmissionsize,withkVAorMVA,whentheratedvoltageisappliedtothetransformer,accordingtoittodetermineunderspecifiedconditionsdoesnotexceedtheratedcurrentvalueoftemperaturerise.Moreenergyefficientpowertransformerisapowertransformercoredistributiontransformer,thebiggestadvantageisthattheno-loadlossvalueisverylow.Finally,itisthecoreproblemtobeconsideredinthewholedesignprocess.Whentheproductstructurelayout,excepttoconsiderthenoncrystalalloycoreitselfisnotsubjecttoexternalforce,andatthesametimeinthecalculationofthecharacteristicsoftheamorphousalloy.DomesticmanufacturersoflargepowertransformerincludingSatons,electricalpower,andbecomePrint-Rite,WestGroup,ShandongChenyu,Shandongelectricpowerequipmentfactory.