三绕组变压器three-columntransformerThrClnTrans双绕组变压器
三绕组变压器的基本方程式和等值电路
三绕组变压器的基本方程式和等值电路
设一、二、三绕组匝数分别为
变比的定义：
磁动势：
磁动势平衡：
转化为电流形式：
图1 三绕组变压器
磁通和电动势：
自感电动势：
互感电动势：
（1）主磁通：与三个绕组同时铰链；
（2）漏磁通：只铰链一个或两个绕组的磁通，前者称自漏，后者为互漏；
为自漏磁通为互漏磁通。
由三个绕组的合成磁动势建立。
经铁心磁路闭合，激磁阻抗随铁心饱和程度而变化。
自漏磁通由一个绕组的磁动势所产生，互漏磁通由两个绕组的磁动势产生，它们主要通过空气和油闭合，相应的漏抗为常数
按上图所示正方向
（1）
和为电流归算值，
电动势：
电压方程式为：
归算到一次侧后
若忽略激磁电流，则
将（1）-（2）并以代入得
（2）
再将（1）-（3）并以代入得
（3）
上两式中：一次绕组等效漏阻抗
二次绕组等效漏抗
三次绕组等效漏抗
可画出三绕组变压器简化等效电路如下图。
图2 三绕组变压器简化等效电路
由于忽略励磁电流，等效电路中的感抗都具有漏电抗性质，它们是不变的常数，但每一个感抗都由该绕组的自感以及三个绕组之
间的互感组合而成，所以在三绕组变压器中，两个二次绕组之间是相互影响的，任何一二次绕组端电压的变化不仅决定于本绕组负载电流的大小及功率因数，而且还与另一个二次绕组负载电流的大小及功率因数有关。
电气英文翻译
电气英文翻译2011-02-06三绕组变压器:three-columntransformerThrClnTrans双绕组变压器:double-columntransformerDblClmnTrans电容器:Capacitor并联电容器:shuntcapacitor电抗器:Reactor母线:Busbar输电线:TransmissionLine发电厂:powerplant断路器:Breaker刀闸(隔脱离关):Isolator分接头:tap电动机:motor有功:activepower无功:reactivepower电流:current容量:capacity 电压:voltage档位:tapposition有功损耗:reactiveloss无功损耗:activeloss功率因数:power-factor防护等级:IPcode重量(毛重):GROSSWT(净重):NETWT额定电压:ratedvoltage额定电流:ratedcurrent功率:power功角:power-angle电压等级:voltagegrade空载损耗:no-loadloss铁损:ironloss铜损:copperloss空载电流:no-loadcurrent阻抗:impedance正序阻抗:positivesequenceimpedance负序阻抗:negativesequenceimpedance零序阻抗:zerosequenceimpedance电阻:resistor电抗:reactance电导:conductance电纳:susceptance无功负载:reactiveload或QLoad有功负载:activeloadPLoad遥测:YC(telemetering)遥信:YX励磁电流(转子电流):magnetizingcurrent常用的电气专业英语词汇inductionmachine感应式电机horseshoemagnet马蹄形磁铁magneticfield磁场eddycurrent涡电流right-handrule右手定则left-handrule左手定则slip转差率inductionmotor感应电动机rotatingmagneticfield旋转磁场winding绕组stator定子rotor转子inducedcurrent感生电流time-phase时间相位excitingvoltage励磁电压solt槽lamination叠片laminatedcore叠片铁芯short-circuitingring短路环squirrelcage鼠笼rotorcore转子铁芯cast-aluminumrotor铸铝转子bronze青铜horsepower马力random-wound散绕insulation绝缘acmotor交流环电动机endring端环alloy合金coilwinding 线圈绕组form-wound模绕performancecharacteristic工作特性frequency频率revolutionsperminute转/分motoring电动机驱动generating发电per-unitvalue标么值breakdowntorque极限转矩breakawayforce起步阻力overhauling检查修理wind-drivengenerator风动发电机revolutionspersecond转/秒numberofpoles极数speed-torquecurve转速力矩特性曲线plugging反向制动synchronousspeed同步转速percentage百分数locked-rotortorque锁定转子转矩full-loadtorque满载转矩primemover原动机inrushcurrent涌流magnetizingreacance磁化电抗line-to-neutral线与中性点间的staorwinding定子绕组leakagereactance漏磁电抗no-load空载fullload满载Polyphase多相(的)iron-loss铁损compleximpedance复数阻抗rotorresistance转子电阻leakageflux漏磁通locked-rotor锁定转子choppercircuit斩波电路separatelyexcited他励compounded复励dcmotor 直流电动机demachine直流电机speedregulation速率调节shunt并励series 串励armaturecircuit电枢电路opticalfiber光纤interoffice局间的waveguide波导波导管bandwidth带宽lightemittingdiode发光二极管silica 硅石二氧化硅regeneration再生,后反馈放大coaxial共轴的,同轴的high-performance高性能的carrier载波mature成熟的SingleSideBand(SSB)单边带couplingcapacitor结合电容propagate传导传播modulator调制器demodulator解调器linetrap限波器shunt分路器AmplitudeModulation(AM 调幅FrequencyShiftKeying(FSK)移频键控tuner调协器attenuate衰减incident入射的two-wayconfiguration二线制generatorvoltage发电机电压dcgenerator直流发电机polyphaserectifier多相整流器boost增压timeconstant时间常数forwardtransferfunction正向通报函数errorsignal 误差信号regulator调节器stabilizingtransformer稳定变压器timedelay延时directaxistransienttimeconstant直轴瞬变时间常数transientresponse 瞬态响应solidstate固体buck赔偿operationalcalculus算符演算gain增益pole极点feedbacksignal反馈信号dynamicresponse动态响应voltagecontrolsystem电压节制体系mismatch掉配errordetector误差检测器excitationsystem励磁体系fieldcurrent励磁电流transistor晶体管high-gain高增益boost-buck升压去磁feedbacksystem反馈体系feedbackloop反馈回路automaticVoltageregulator(AVR)自动电压调解器referenceVoltage基准电压magneticamplifier磁放大器amplidyne微场扩流发电机self-exciting自励的limiter限幅器manualcontrol手动节制blockdiagram方框图linearzone线性区potentialtransformer电压互感器stabilizationnetwork稳定网络stabilizer稳定器air-gapflux气隙磁通saturationeffect饱以及效应saturationcurve饱以及曲线fluxlinkage磁链perunitvalue标么值shuntfield并励磁场magneticcircuit磁路load-saturationcurve负载饱以及曲线air-gapline气隙磁化线polyphaserectifier多相整流器circuitcomponents电路元件circuitparameters电路参数electricaldevice电气设备electricenergy电能primarycell原生干电池energyconverter电能转换器conductor导体heatingappliance电热器direct-current直流timeinvariant时不变的self-inductor自感mutual-inductor互感thedielectric电媒质storagebattery 蓄干电池e.m.f=electromotiveforce电动势Loopsystem环网体系Demagnetization退磁,去磁Distributionsystem配电体系Relaypanel继电器屏Tripcircuit跳闸电路Tertiarywinding第三绕组Switchboard配电盘,开关屏Eddycurrent涡电流Instrumenttransducer测量互感器Copperloss铜损Oil-impregnatedpaper油浸纸绝缘Ironloss铁损Bareconductor裸导线Leakageflux漏磁通Reclosing重合闸Autotransformer自耦变压器Distributiondispatchcenter配电调度中间Zerosequencecurrent零序电流Pulverizer磨煤机Series(shunt)compensation串(并)联赔偿Drum汽包,炉筒Restriking电弧重燃Superheater过热器Automaticoscillograph自动录波仪Peak-load峰荷Tidalcurrent潮流Primegridsubstation主网变电站Tripcoil 跳闸线圈Reactivepower`无功功率Synchronouscondenser同步调相机Activepower有功功率Mainandtransferbusbar单母线带旁路Shuntreactor并联电抗器Feeder馈电线Blackout断电、停电Skineffect集肤效应Extra-highvoltage(EHV)超高压Potentialstress电位应力(电场强度)Ultra-highvoltage(UHV)特高压Capacitorbank电容器组Domesticload平易近用电crusher碎煤机Reservecapacity备用容量pulverizer磨煤机Fossil-firedpowerplant火电厂baghouse集尘室Combustionturbine燃气轮船上的发动机Stationary(moving)blade固定(可动)叶片Right-of-way线路走廊Shaft 转轴Rectifier整流器Kinetic(potential)energy动(势)能Inductive(Capacitive)电感的(电容的)Pumpedstoragepowerstation抽水蓄能电站Reactance(impedance)电抗(阻抗)Synchronouscondenser同步调相机Reactor电抗器Light(boiling)-waterreactor轻(沸)水反应堆Reactive电抗的,无功的Stator(rotor)定(转)子Phasedisplacement(shift)相移Armature 电枢Surge冲击,过电压Salient-pole凸极Retainingring护环Slipring滑环Carbonbrush炭刷Arcsuppressioncoil消弧线圈Short-circuitratio短路比Primary(backup)relaying主(后备)继电保护Induction感应Phaseshifter移相器Autotransformer自藕变压器Powerlinecarrier(PLC)电力线载波(器)Bushing套管Linetrap线路限波器Turn(turnratio)匝(匝比,变比)Uninterruptiblepowersupply不间断电源Powerfactor功率因数Spotpowerprice实时电价Tap分接头Time-of-use(tariff)分时(电价)Recoveryvoltage恢复电压XLPE(CrossLinkedPolyethylene)交联聚乙烯(电缆)Arcreignition电弧重燃Rms(rootmeansquare)均方根值Operationmechanism操动机构RF(radiofrequency)射频Pneumatic(hydraulic)气动(液压)Rpm(revolutionperminute)转/分Nameplate铭牌LAN(localareanetwork)局域网Independentpoleoperation分相操作LED(lightemittingdiode)发光二极管Malfunction掉灵Single(dual,ring)bus单(双,环形)母线Shieldwire避雷线IC(integratedcircuit)集成电路Creepdistance爬电距离FFT(fastFouriertransform)快速傅立叶变换Siliconrubber硅橡胶Telemeter 遥测Compositeinsulator合成绝缘子Loadshedding甩负荷Converter(inverter)换流器(逆变器)Lateral支线Bustiebreaker母联断路器Power-flowcurrent工频续流Protectiverelaying继电保护sparkover放电Transferswitching倒闸操作Siliconcarbide碳化硅Outgoing(incoming)line 出(进)线Zincoxide氧化锌PhaseLead(lag)相位超前(滞后)Withstandtest耐压试验Staticvarcompensation(SVC)静止无功赔偿Dispatcher调度员FlexibleACtransmissionsystem(FACTS)灵活交流输电体系Supervisorycontrolanddataacquisition(SCADA)监控与数据采集EMC(electromagneticcompatibility)电磁兼容ISO(internationalstandardizationorganization)国际标准化组织GIS(gasinsulatedsubstation,geographicinformationsystem)气体绝缘变电站,地理信息体系IEC(internationalElectrotechnicalCommission)国际电工(技术)委员会IEEE(InstituteofElectricalandElectronicEngineers)电气与电子工程师学会(美)IEE(InstitutionofElectricalEngineers)电气工程师学会(英)scale刻度,量程calibrate校准rated额定的terminal接线端子fuse保险丝,熔丝humidity湿度resonance谐振,共振moisture潮湿,湿气analytical解析的operationamplifier运算放大器numerical数字的amplitudemodulation(AM)调幅frequency-domain频域frequencymodulation(FM)调频time-domain时域binary二进制operationamplifier运算放大器octal八进制activefilter有源滤波器decimal十进制passivefilter无源滤波器hexadecimal十六进制generator 发电机gasinsulatedsubstationGIS气体绝缘变电站turbogenerator汽轮发电机neutralpoint中性点hydrogenerator水轮发电机movingcontact动触头hydraulicturbine水轮船上的发动机fixedcontact静触头steamturbine汽轮船上的发动机arc-extinguishingchamber灭弧室dynamo直流发电机straycapacitance杂散电容motor电动机strayinductance杂散电感stator 定子spheregap球隙rotor转子bushingtapgroundingwire套管末屏接地线powertransformer电力变压器electrostaticvoltmeter静电电压表variabletransformer调压变压器ammeter电流表tapedtransformer多级变压器groundingcapacitance对地电容stepup(down)transformer升(降)压变压器voltagedivider分压器circuitbreakerCB断路器surgeimpedance波阻抗deadtankoilcircuitbreaker多油断路器Scheringbridge西林电桥livetankoilcircuitbreaker少油断路器Rogowskicoil罗可夫斯基线圈vacuumcircuitbreaker真空断路器oscilloscope示波器sulphurhexafluoridebreakerSF6断路器peakvoltmeter峰值电压表potentialtransformerPT电压互感器conductor导线currenttransformerCT 电流互感器cascadetransformer串级变压器disconnector隔脱离关couplingcapacitor耦合电容earthingswitch接地开关testobject被试品synchronousgenerator同步发电机detectionimpedance检测阻抗asynchronousmachine异步电机substation变电站Insulator绝缘子hydropowerstation水动力发电站lightningarrester避雷器thermalpowerstation火力发电站metaloxidearresterMOA氧化锌避雷器nuclearpowerstation核电站busbar母线oil-filledpowercable充油电力电缆overheadline架空线mixeddivider(阻容)混合分压器transmissionline传输线XLPEcable交链聚乙烯电缆(coaxial)cable(同轴)电缆relay继电器ironcore铁芯tunedcircuit调协电路winding绕组suspensioninsulator悬式绝缘子bushing套管porcelaininsulator瓷陶绝缘子front(tail)resistance波头(尾)电阻glassinsulator玻璃绝缘子inverterstation换流站flashcounter雷电统计器charging(damping)resistor充电(阻尼)电阻steel-reinforcedaluminumconductor钢芯铝绞线tank箱体pointplanegap针板间隙earth(ground)wire接地线excitingwinding激磁绕组gradingring均压环triggerelectrode触发电极highvoltageengineering高电压工程glowdischarge辉光放电harmonic谐波highvoltagetestingtechnology高电压试验技术Powerelectronics电力电子Automaticcontrol自动节制Principlesofelectriccircuits电路原理Digitalsignalprocessing数字信号处理powersystem电力体系impulsecurrent冲击电流powernetwork电力网络impulseflashover冲击闪络insulation绝缘inhomogenousfield不均匀场overvoltage过电压insulationcoordination绝缘配合aging老化internaldischarge内部放电alternatingcurrent交流电lightningstroke雷电波ACtransmissionsystem交流输电体系lightningovervoltage雷电过电压arcdischarge电弧放电lossangle(媒质)损耗角attachmentcoefficient附着系数magneticfield磁场attenuationfactor衰减系数meanfreepath平均自由行程anode(cathode)阳极(阴极)meanmolecularvelocity平均分子速率breakdown(电)击穿negativeions负离子bubblebreakdown气泡儿击穿non-destructivetesting非破坏性试验cathoderayoscilloscope阴极射线示波器non-uniformfield不均匀场cavity空穴,腔partialdischarge局部放电corona电晕peakreversevoltage反向峰值电压compositeinsulation组合绝缘photoelectricemission光电发射criticalbreakdownvoltage临界击穿电压photon光量子Discharge放电phase-to-phasevoltage线电压Dielectric电媒质,绝缘体polarityeffect极性效应dielectricconstant媒质常数powercapacitor电力电容dielectricloss媒质损耗quasi-uniformfield稍不均匀场directcurrent直流电radiointerference无线干扰dividerratio分压器分压比ratingofequipment设备额定值grounding接地routingtesting常规试验electricfield电场residualcapacitance残余电容electrochemicaldeterioration电化学腐化shielding屏蔽electronavalanche电子崩shortcircuittesting短路试验electronegativegas电负性气体spacecharge空间电荷epoxyresin环氧树脂streamerbreakdown流注击穿expulsiongap灭弧间隙surfacebreakdown外貌击穿fieldstrength场强sustaineddischarge自持放电fieldstress电场力switchingovervoltage操作过电压fielddistortion场畸变thermalbreakdown热击穿fieldgradient场梯度treeing树梢放电fieldemission场致发射uniformfield均匀场flashover闪络wavefront(tail)波头(尾)gaseousinsulation气体绝缘withstandvoltage耐受电压Primemover原动机Powerfactor功率因数Torque力矩Distributionautomationsystem配电网自动化体系Servomechanism伺服体系Automaticmeterreading自动抄表Boiler锅炉Armature电枢Internalcombustionengine内燃机Brush电刷Deenergize断电Commutator换向器Undergroundcable地下电缆Counteremf 反电势历史上的今天:电气专业英语一览英文全称缩写中文【A-G】2011-02-06。
三绕组变压器及其他变压器--第五章
Z
/ 2
R2/
jX
/ 2
Z3/
R3/
jX
/ 3
X1பைடு நூலகம்
( L1
M1/2
M1/3
M
/ 23
)
X
/ 2
(L/2
M1/2
M
/ 23
M1/3 )
X
/ 3
(L/3
M1/3
M
/ 23
M1/2 )
注意：三绕组变压器中的电抗都是等效电抗，不 是漏抗，但它们具有漏抗的性质，即都为常数。
R1=1/2(Rk12+Rk13-Rk23') X1=1/2(Xk12+Xk13-Xk23') R2'=1/2(Rk12+Rk23'-Rk13) X2'=1/2(Xk12+Xk23'-Xk13) R3'=1/2(Rk13+Rk23'-Rk12) X3'=1/2(Xk13+Xk23'-Xk12)
1．变比ka ka=U1／U2=Nab／Ncb=N1/N2
2 磁势平衡方程式为：
I1(N1 N2 ) IN2 I0 N1
为了分析方便起见，略去I0[很小]。
I1N1 I1N2 I1N2 I2 N2 0
得
I1N1 I2 N2 0
由上式知：
1） I1和 I2 反相位 2）因为 I I1 I2 ，可知：I 与I2 同相位
（一）电压互感器
1．电压互感器的运行情况相当于2次侧开路的变压器， 副边额定电压设计为100V，其负载为阻抗较大的测 量仪表。
2．副边电流产生的压降和励磁电流的存在是电压互感 器误差之源。
电力系统英文单词精编版
电力系统英文单词精编版MQS system office room 【MQS16H-TTMS2A-MQSS8Q8-MQSH16898】电力系统powersystem发电机generator励磁excitation励磁器excitor电压voltage电流current升压变压器step-uptransformer母线bus变压器transformer空载损耗no-loadloss铁损ironloss铜损copperloss空载电流no-loadcurrent有功损耗activeloss无功损耗reactiveloss输电系统powertransmissionsystem 高压侧highside输电线transmissionline高压highvoltage低压lowvoltage中压middlevoltage功角稳定anglestability稳定stability电压稳定voltagestability暂态稳定transientstability 电厂powerplant能量输送powertransfer交流AC直流DC电网powersystem落点droppoint开关站switchstation调节regulation高抗highvoltageshuntreactor 并列的apposable裕度margin故障fault三相故障threephasefault分接头tap切机generatortriping高顶值highlimitedvalue 静态static(state)动态dynamic(state)机端电压控制AVR电抗reactance电阻resistance功角powerangle有功（功率）activepower 电容器Capacitor电抗器Reactor断路器Breaker电动机motor功率因数power-factor定子stator阻抗impedance功角power-angle电压等级voltagegrade有功负载:activeloadPLoad 无功负载reactiveload档位tapposition电阻resistor电抗reactance电导conductance电纳susceptance上限upperlimit下限lowerlimit正序阻抗positivesequenceimpedance 负序阻抗negativesequenceimpedance 零序阻抗zerosequenceimpedance无功（功率）reactivepower功率因数powerfactor无功电流reactivecurrent斜率slope额定rating变比ratio参考值referencevalue电压互感器PT分接头tap仿真分析simulationanalysis下降率drooprate传递函数transferfunction框图blockdiagram受端receive-side同步synchronization保护断路器circuitbreaker摇摆swing阻尼damping无刷直流电机BruslessDCmotor刀闸(隔离开关)Isolator机端generatorterminal变电站transformersubstation永磁同步电机Permanent-magnetSynchronismMotor异步电机AsynchronousMotor三绕组变压器three-columntransformerThrClnTrans 双绕组变压器double-columntransformerDblClmnTrans 固定串联电容补偿fixedseriescapacitorcompensation 双回同杆并架double-circuitlinesonthesametower单机无穷大系统onemachine-infinitybussystem励磁电流Magnetizingcurrent补偿度degreeofcompensation电磁场:Electromagneticfields失去同步lossofsynchronization装机容量installedcapacity无功补偿reactivepowercompensation故障切除时间faultclearingtime极限切除时间criticalclearingtime强行励磁reinforcedexcitation并联电容器shuntcapacitor<下降特性droopcharacteristics线路补偿器LDC(linedropcompensation)电机学ElectricalMachinery自动控制理论AutomaticControlTheory电磁场ElectromagneticField微机原理PrincipleofMicrocomputer电工学Electrotechnics电路原理Principleofcircuits电机学ElectricalMachinery电力系统稳态分析Steady-StateAnalysisofPowerSystem电力系统暂态分析Transient-StateAnalysisofPowerSystem电力系统继电保护原理PrincipleofElectricalSystem'sRelayProtection电力系统元件保护原理ProtectionPrincipleofPowerSystem'sElement 电力系统内部过电压PastVoltagewithinPowersystem模拟电子技术基础BasisofAnalogueElectronicTechnique数字电子技术DigitalElectricalTechnique电路原理实验电气工程讲座Lecturesonelectricalpowerproduction电力电子基础Basicfundamentalsofpowerelectronics高电压工程Highvoltageengineering电子专题实践Topicsonexperimentalprojectofelectronics电气工程概论Introductiontoelectricalengineering电子电机集成系统Electronicmachinesystem电力传动与控制ElectricalDriveandControl电力系统继电保护PowerSystemRelayingProtection主变压器maintransformer升压变压器step-uptransformer降压变压器step-downtransformeroperatingtransformer备用变压器standbytransformer公用变压器commontransformer三相变压器three-phasetransformer单相变压器single-phasetransformer带负荷调压变压器on-loadregulatingtransformer 变压器铁芯transformercore变压器线圈transformercoil变压器绕组transformerwinding变压器油箱transformeroiltanktransformercasing变压器风扇transformerfan变压器油枕transformeroilconservator(∽drum 变压器额定电压transformerretedvoltage变压器额定电流transformerretedcurrent变压器调压范围transformervoltageregulationrage 配电设备powerdistributionequipmentSF6断路器SF6circuitbreaker开关switch按钮button隔离开关isolator,disconnector 真空开关vacuumswitch刀闸开关knife-switch接地刀闸earthingknife-switch 电气设备electricalequipment 变流器currentconverter电流互感器currenttransformer电压互感器voltagetransformer电源powersource交流电源ACpowersource直流电源DCpowersource 工作电源operatingsource 备用电源Standbysource 强电strongcurrent 弱电weakcurrent继电器relay信号继电器signalrelay电流继电器currentrelay电压继电器voltagerelay跳闸继电器trippingrelay合闸继电器closingrelay中间继电器intermediaterelay时间继电器timerelay零序电压继电器zero-sequencevoltagerelay 差动继电器differentialrelay闭锁装置lockingdevice遥控telecontrol遥信telesignalisation遥测telemetering遥调teleregulationbreaker,circuitbreaker少油断路器mini-oilbreaker,oil-mini-mumbreaker 高频滤波器high-frequencyfilter组合滤波器combinedfilter常开触点normallyopenedcontaact常闭触点normallyclosedcontaact并联电容parallelcapacitance保护接地protectiveearthing熔断器cutout,fusiblecutout电缆cabletrippingpulse合闸脉冲closingpulse一次电压primaryvoltage二次电压secondaryvoltage并联电容器parallelcapacitor无功补偿器reactivepowercompensationdevice 消弧线圈arc-suppressingcoil母线Bus,busbar三角接法deltaconnection星形接法Wyeconnectionschematicdiagram一次系统图primarysystemdiagram二次系统图secondarysystemdiagram两相短路two-phaseshortcircuit三相短路three-phaseshortcircuit单相接地短路single-phasegroundshortcircuit 短路电流计算calculationofshortcircuitcurrent 自动重合闸automaticreclosing高频保护high-freqencyprotection距离保护distanceprotectiontransversedifferentialprotection 纵差保护longitudinaldifferentialprotection 线路保护lineprotection过电压保护over-voltageprotection母差保护busdifferentialprotection瓦斯保护Buchholtzprotection变压器保护transformerprotection电动机保护motorprotection远方控制remotecontrol用电量powerconsumption载波carrier故障fault选择性selectivity速动性speed灵敏性sensitivity可靠性reliability电磁型继电器electromagnetic无时限电流速断保护instantaneouslyover-currentprotection 跳闸线圈tripcoil工作线圈operatingcoil制动线圈retraintcoil主保护mainprotection后备保护back-upprotection定时限过电流保护definitetimeover-currentprotection 三段式电流保护thecurrentprotectionwiththreestages 反时限过电流保护inversetimeover-currentprotection 方向性电流保护thedirectionalcurrentprotection零序电流保护zero-sequencecurrentprotection阻抗impedance微机保护MicroprocessorProtection。
三绕组变压器
三绕组变压器科技名词定义中文名称：三绕组变压器英文名称：three winding transformer定义：具有三个独立绕组的变压器。
应用学科：电力（一级学科）；变电（二级学科）本内容由全国科学技术名词审定委员会审定公布三绕组变压器三绕组变压器的每相有3个绕组，当1个绕组接到交流电源后，另外2个绕组就感应出不同的电势，这种变压器用于需要2种不同电压等级的负载。
发电厂和变电所通常出现3种不同等级的电压，所以三绕组变压器在电力系统中应用比较广泛。
每相的高中低压绕组均套于同一铁心柱上。
为了绝缘使用合理，通常把高压绕组放在最外层，中压和低压绕组放在内层。
目录编辑本段编辑本段二、特性3个变比：k12=N1/N2≈U1/U2k13=N1/N3≈U1/U3k23=N2/N3≈U2/U3--------------------------------------------------------------------------------负载运行时若不计空载电流I0,则，变压器的磁势平衡方程为I1N1+I2N2+I3N3=0I1+I2/k12+I3/k13=0I1+I2'+I3'=0简化等效电路中的Z1=R1+jX1为1次侧的阻抗，Z2'=R2'+jX2'为2次侧折算到1次侧的阻抗；Z3'=R3'+jX3'为3次侧折算到1次侧的阻抗，6个参数可以根据短路试验求得。
Zk12=Rk12+jXk12=(R1+R2')+j(X1+X2')Zk13=Rk13+jXk13=(R1+R3')+j(X1+X3')Zk23'=Rk23'+jXk23'=(R2'+R3')+j(X2'+X3')--------------------------------------------------------------------------------R1=1/2(Rk12+Rk13-Rk23')X1=1/2(Xk12+Xk13-Xk23')R2'=1/2(Rk12+Rk23'-Rk13)X2'=1/2(Xk12+Xk23'-Xk13)R3'=1/2(Rk13+Rk23'-Rk12)X3'=1/2(Xk13+Xk23'-Xk12)知道参数后就可以根据等效电路计算特性了。
三相三绕组强迫油循环风冷变压器符号
三相三绕组强迫油循环风冷变压器符号引言在电力系统中，变压器是一种重要的电力设备，用于变换电压、传输电能。
而三相三绕组强迫油循环风冷变压器是变压器中的一种常见类型。
本文将对三相三绕组强迫油循环风冷变压器的符号进行详细探讨。
三相三绕组强迫油循环风冷变压器的基本结构三相三绕组强迫油循环风冷变压器由集电器、绕组、油箱、油泵等组成。
其中，绕组是变压器的核心部分，用于变换电压。
油箱则用于存放变压器油，起到冷却作用。
油泵则负责强制油循环，以保持变压器的正常运行。
集电器集电器是变压器的一个重要组成部分，用于连接变压器的输入和输出电路。
在三相三绕组强迫油循环风冷变压器符号中，集电器通常用一个长方形表示，在矩形的上下两端分别标注输入和输出电路的符号。
这样的符号设计使得变压器的输入输出关系清晰可见。
绕组绕组是变压器的核心部分，用于实现电压的变换。
在三相三绕组强迫油循环风冷变压器的符号中，绕组通常用一个或多个圆圈表示，圆圈上标注有相应的电压值，并通过线段与集电器相连接。
三相三绕组分别表示为“U1-U2”，“V1-V2”，“W1-W2”，其中“U1”，“V1”，“W1”表示输入电压，而“U2”，“V2”，“W2”表示输出电压。
油箱油箱是变压器的重要部分，用于储存变压器油，并起到冷却的作用。
在三相三绕组强迫油循环风冷变压器符号中，油箱通常用一个长方形表示，在长方形的上部标注“油”字，表示其功能。
同时，油箱的底部还可以通过线段连接到集电器，表示变压器油的循环。
油泵油泵是强迫油循环风冷变压器中的一个重要组成部分。
油泵负责将变压器油抽出油箱，并通过油管将其循环输送到绕组中，以实现变压器的冷却。
在符号中，油泵通常用一个小矩形表示，并与油箱通过线段连接，表示其物理关系。
三相三绕组强迫油循环风冷变压器的工作原理三相三绕组强迫油循环风冷变压器的工作原理主要包括油的循环和风的冷却。
油的循环油的循环是变压器保持正常运行的关键。
油泵负责将变压器油抽出油箱，并通过油管输送到绕组中。
发电专业常用英语
基础电力系统power system电网 power grid电厂 power plant电压 voltage电流 current交流 AC直流 DC静态 static (state)动态 dynamic (state)有功（功率） active power无功（功率） reactive power无功电流 reactive current电容器 Capacitor电抗器 Reactor电阻 resistor电抗 reactance电导 conductance电纳 susceptance阻抗 impedance正序阻抗 positive sequence impedance 负序阻抗 negative sequence impedance 零序阻抗 zero sequence impedance 高压 high voltage中压 middle voltage低压 low voltage额定 rating并列的 apposable三相 three phase短路 short-circuit电机发电机 generator定子 stator转子 rotor励磁 excitation强行励磁 reinforced excitation励磁器 excitor励磁电流 magnetizing current功率因数 power factor功角 power angle功角稳定 angle stability机端电压控制（自动电压调节器） AVR,automatic voltage regulator 切机（切除发电机的简称） generator tripping电动机 motor无刷直流电机 brushless DC motor永磁同步电机 permanent-magnet synchronism motor同步电机 synchronization motor异步电机 asynchronous motor失去同步 loss of synchronization变压器 transformer升压变压器 step-up transformer降压变压器 step-down transformer三绕组变压器 three-column transformer （缩写ThrClnTrans ）双绕组变压器 double-column transformer （缩写DblClmnTrans）分接头 tap档位 tap position变比 ratio铁损 iron loss铜损 copper loss空载损耗 no-load loss空载电流 no-load current输电装机容量 installed capacity输电系统 power transmission system能量输送 power transfer输电线 transmission line电压等级 voltage grade电压稳定 voltage stability暂态稳定 transient stability机端 generator terminal受端 receive side无功损耗 reactive loss有功损耗 active loss有功负载 active load无功负载 reactive load高抗（高压并联电抗器的简称） high voltage shunt reactor并联电容器 shunt capacitor固定串联电容补偿 fixed series capacitor compensation无功补偿 reactive power compensation线路补偿器 LDC,line drop compensation补偿度 degree of compensation双回同杆并架 double-circuit lines on the same tower 单机无穷大系统 one machine infinity bus system变电站 transformer substation开关站 switch station母线 bus断路器 breaker保护断路器 circuit breaker刀闸(隔离开关) isolator故障切除时间 fault clearing time极限切除时间 critical clearing time电压互感器 PT,potential transformer控制稳定 stability故障 fault仿真分析 simulation analysis传递函数 transfer function框图 block diagram传感器 sensor落点 drop point下降率 droop rate下降特性 droop characteristics摇摆 swing阻尼 damping裕度 margin调节 regulation斜率 slope参考值 reference value高顶值 high limited value上限 upper limit下限 lower limit学科电磁场（致敬麦克西奎） Electromagnetic Fields电机学 Electrical Machinery自动控制理论 Automatic Control Theory电磁场 Electromagnetic Field微机原理 Principle of Microcomputer电工学 Electrotechnics电路原理 Principle of Circuits电机学 Electrical Machinery。
电气英语大全
三绕组变压器： three-column transformer ThrClnTrans双绕组变压器： double-column transformer DblClmnTrans电容器： Capacitor 并联电容器： shunt capacitor 电抗器：Reactor母线： Busbar 输电线： Transmission Line 发电厂： power plant断路器： Breaker 刀闸(隔离开关)：Isolator 分接头： tap电动机： motor 有功： active power 无功： reactive power 电流： current 容量： capacity 电压： voltage档位：tapposition 有功损耗： reactive loss 无功损耗： active loss功率因数： power-factor 功率： power 功角： power-angle电压等级：voltagegrade 空载损耗：no-loadloss 铁损：iron loss铜损： copper loss 空载电流： no-load current 阻抗：impedance正序阻抗： positive sequence impedance 负序阻抗：negative sequence impedanceabscissa axis 横坐标ac motor 交流环电动机active (passive) circuit elements 有(无)源电路元件active component 有功分量active in respect to 相对…、呈阻性admittance 导纳air-gap flux distribution 气隙磁通分布air-gap flux 气隙磁通air-gap line 气隙磁化线algebraic 代数得algorithmic 算法得alloy 合金ampere-turns 安匝(数)amplidyne 微场扩流发电机Amplitude Modulation(AM 调幅armature circuit 电枢电路armature coil 电枢线圈armature m 、 m、f、 wave 电枢磁势波attenuate 衰减automatic station 无人值守电站automatic Voltage regulator(AVR) 自动电压调整器auxiliary motor 辅助电动机bandwidth 带宽base 基极bilateral circuit 双向电路bimotored 双马达得biphase 双相得bipolar junction transistor (BJT) 双极性晶体管block diagram 方框图boost 增压boost-buck 升压去磁breakaway force 起步阻力breakdown torque 极限转矩bronze 青铜buck 补偿capacitance effect 电容效应carbon-filament lamp 碳丝灯泡carrier 载波Cartesian coordinates 笛卡儿坐标系cast-aluminum rotor 铸铝转子chopper circuit 斩波电路circuit branch 支路circuit components 电路元件circuit diagram 电路图circuit parameters 电路参数coaxial 共轴得,同轴得coil winding 线圈绕组coincide in phase with 与…、同相collector 集电极commutation condition 换向状况commutator-brush combination 换向器-电刷总线complex impedance 复数阻抗complex number 复数compound generator 复励发电机compounded 复励conductance 电导conductor 导体corridor 通路coupling capacitor 结合电容cumulatively compounded motor 积复励电动机dc generator 直流发电机dc motor 直流电动机de machine 直流电机demodulator 解调器differentiation 微分direct axis transient time constant 直轴瞬变时间常数direct axis 直轴direct-current 直流displacement current 位移电流dynamic response 动态响应dynamic-state operation 动态运行e、 m、f = electromotive fore 电动势eddy current 涡流effective values 有效值effects of saturation 饱与效应electric energy 电能electrical device 电气设备electrode 电极电焊条electromagnetic torque 电磁转矩emitter 发射管放射器发射极end ring 端环energy converter 电能转换器epoch angle 初相角equivalent T – circuit T 型等值电路error detector 误差检测器error signal 误差信号excitation system 励磁系统excited by 励磁exciting voltage 励磁电压external armature circuit 电枢外电路external characteristic 外特性feedback component 反馈元件feedback loop 反馈回路feedback signal 反馈信号feedback system 反馈系统fidelity 保真度field coils 励磁线圈field current 励磁电流field effect transistor (FET) 场效应管field winding 磁场绕组励磁绕组flux linkage 磁链form-wound 模绕forward transfer function 正向传递函数Frequency Shift Keying(FSK) 移频键控frequency 频率full load 满载full-load torque 满载转矩gain 增益gain 增益generating 发电generator voltage 发电机电压Geometrical position 几何位置harmonic 谐波得heating appliance 电热器high-gain 高增益high-performance 高性能得horsepower 马力horseshoe magnet 马蹄形磁铁hydropower station 水电站ideal source 理想电源imaginary part 虚部impedance 阻抗incident 入射得induced current 感生电流induction generator 感应发电机induction machine 感应电机induction machine 感应式电机induction motor 感应电动机infinite voltage gain 无穷大电压增益inrush current 涌流instantaneous electric power 瞬时电功率instantaneous mechanical power 瞬时机械功率insulation 绝缘integration 积分下限internal resistance 内阻interoffice 局间得inverse 倒数iron-loss 铁损isolation 隔离分离绝缘隔振laminated core 叠片铁芯lamination 叠片leakage current 漏电流leakage flux 漏磁通leakage reactance 漏磁电抗leakage 泄漏left-hand rule 左手定则light emitting diode 发光二极管lightning shielding 避雷limiter 限幅器line trap 限波器linear zone 线性区line-to-neutral 线与中性点间得load characteristic 负载特性load-saturation curve 负载饱与曲线locked-rotor torque 锁定转子转矩locked-rotor 锁定转子电气专业英语词汇电压源 voltage source电流源 current source理想电压源 ideal voltage source理想电流源 ideal current source伏安特性 volt-ampere characteristic电动势 electromotive force 电压 voltage电流 current电位 potential电位差 potential difference欧姆伏特安培瓦特Ohm Volt Ampere Watt焦耳 Joule电路 circuit电路元件 circuit element 电阻 resistance电阻器 resistor电感 inductance电感器 inductor 电容 capacitance 电容器 capacitor电路模型参考方向参考电位欧姆定律circuit model reference direction reference potential Ohm ’s law基尔霍夫定律 Kirchhoff’s law基尔霍夫电压定律 Kirchhoff’s voltage law ( KVL ) 基尔霍夫电流定律 Kirchhoff’s current law ( KCL ) 结点 node支路 branch回路 loop网孔 mesh支路电流法 branch current analysis网孔电流法 mesh current analysis结点电位法 node voltage analysis电源变换 source transformations叠加原理 superposition theorem网络 network无源二端网络 passive two-terminal network 有源二端网络 active two-terminal network 戴维宁定理 Thevenin’s theorem诺顿定理 Norton’s theorem开路(断路)open circuit短路 short circuit开路电压短路电流直流电路交流电路open-circuit voltageshort-circuit currentdirect current circuit (dc) alternating current circuit (ac)正弦交流电路 sinusoidal a-c circuit平均值 average value有效值 effective value均方根值 root-mean-squire value (rms)瞬时值 instantaneous value电抗 reactance感抗 inductive reactance容抗capacitive reactance法拉 Farad亨利 Henry阻抗 impedance复数阻抗 complex impedance相位 phase初相位 initial phase相位差 phase difference相位领先 phase lead相位落后 phase lag倒相，反相 phase inversion 频率frequency角频率 angular frequency 赫兹 Hertz相量 phasor相量图 phasor diagram有功功率无功功率视在功率功率因数active power reactive power apparent power power factor功率因数补偿 power-factor compensation 串联谐振 series resonance并联谐振 parallel resonance谐振频率 resonance frequency频率特性 frequency characteristic幅频特性 amplitude-frequency response characteristic相频特性截止频率品质因数phase-frequency response characteristic cutoff frequencyquality factor通频带 pass-band带宽 bandwidth (BW)滤波器 filter一阶滤波器first-order filter二阶滤波器second-order filter 低通滤波器low-pass filter高通滤波器high-pass filter带通滤波器band-pass filter带阻滤波器band-stop filter转移函数 transfer function波特图 Bode diagram傅立叶级数 Fourier series三相电路 three-phase circuit三相电源 three-phase source对称三相电源 symmetrical three-phase source 对称三相负载 symmetrical three-phase load 相电压 phase voltage相电流 phase current线电压 line voltage线电流 line current三相三线制 three-phase three-wire system三相四线制 three-phase four-wire system三相功率 three-phase power星形连接 star connection(Y-connection)三角形连接 triangular connection(D- connection ,delta connection)中线 neutral line暂态 transient state稳态 steady state暂态过程，暂态响应 transient response换路定理low of switch一阶电路first-order circuit三要素法three-factor method时间常数time constant积分电路integrating circuit微分电路differentiating circuit磁路与变压器磁场 magnetic field磁通 flux磁路 magnetic circuit磁感应强度 flux density磁通势 magnetomotive force 磁阻 reluctance直流电动机交流电动机异步电动机同步电动机dc motorac motor asynchronous motor synchronous motor三相异步电动机 three-phase asynchronous motor 单相异步电动机 single-phase asynchronous motor 旋转磁场 rotating magnetic field定子 stator转子 rotor转差率 slip起动电流 starting current起动转矩 starting torque额定电压 rated voltage额定电流 rated current额定功率 rated power机械特性 mechanical characteristic按钮 button熔断器 fuse 开关 switch行程开关 travel switch继电器 relay接触器 contactor常开(动合)触点 normally open contact常闭(动断)触点 normally closed contact时间继电器 time relay热继电器 thermal overload relay中间继电器 intermediate relay可编程控制器 programmable logic controller 语句表 statement list梯形图 ladder diagram本征半导体 intrinsic semiconductor 掺杂半导体 doped semiconductor P 型半导体 P-type semiconductor N 型半导体 N--type semiconductor 自由电子 free electron空穴 hole载流子 carriersPN 结 PN junction扩散 diffusion漂移 drift二极管 diode硅二极管 silicon diode锗二极管 germanium diode阳极 anode阴极 cathode发光二极管 light-emitting diode (LED)光电二极管 photodiode稳压二极管 Zener diode晶体管(三极管) transistorPNP 型晶体管 PNP transistorNPN 型晶体管 NPN transistor发射极 emitter集电极 collector基极 base电流放大系数 current amplification coefficient 场效应管 field-effect transistor (FET)P 沟道 p-channelN 沟道 n-channel结型场效应管 junction FET ( JFET )金属氧化物半导体 metal-oxide semiconductor (MOS)耗尽型 MOS 场效应管 depletion mode MOSFET ( D-MOSFET )增强型 MOS 场效应管 enhancement mode MOSFET ( E-MOSFET )源极 source栅极 grid漏极 drain跨导transconductance夹断电压 pinch-off voltage热敏电阻 thermistor开路 open短路 shorted放大器 amplifier正向偏置 forward bias反向偏置 backward bias静态工作点 quiescent point (Q-point)等效电路 equivalent circuit电压放大倍数 voltage gain总得电压放大倍数 overall voltage gain 饱与 saturation截止 cut-off放大区 amplifier region饱与区 saturation region截止区 cut-off region失真distortion饱与失真 saturation distortion截止失真 cut-off distortion零点漂移 zero drift正反馈 positive feedback负反馈 negative feedback串联负反馈 series negative feedback并联负反馈 parallel negative feedback共射极放大器 common-emitter amplifier射极跟随器 emitter-follower共源极放大器 common-source amplifier共漏极放大器 common-drain amplifier多级放大器 multistage amplifier阻容耦合放大器 resistance-capacitance coupled amplifier 直接耦合放大器 direct- coupled amplifier输入电阻 input resistance输出电阻 output resistance负载电阻 load resistance动态电阻 dynamic resistance负载电流 load current旁路电容 bypass capacitor耦合电容coupled capacitor直流通路direct current path交流通路alternating current path直流分量direct current component交流分量alternating current component 变阻器(电位器)rheostat电阻(器)resistor电阻(值)resistance电容(器)capacitor电容(量)capacitance电感(器，线圈)inductor电感(量)，感应系数inductance正弦电压 sinusoidal voltage差动放大器 differential amplifier运算放大器 operational amplifier(op-amp)失调电压失调电流共模信号差模信号offset voltageoffset current common-mode signal different-mode signal共模抑制比 common-mode rejection ratio (CMRR)积分电路 integrator ( circuit )微分电路 differentiator ( circuit )有源滤波器 active filter低通滤波器 low-pass filter高通滤波器 high-pass filter带通滤波器 band-pass filter带阻滤波器 band-stop filter波特沃斯滤波器 Butterworth filter切比雪夫滤波器 Chebyshev filter贝塞尔滤波器 Bessel filter截止频率 cut-off frequency上限截止频率 upper cut-off frequency 下限截止频率 lower cut-off frequency 中心频率 center frequency带宽 Bandwidth开环增益 open-loop gain闭环增益 closed-loop gain共模增益 common-mode gain输入阻抗 input impedance电压跟随器 voltage-follower电压源 voltage source电流源 current source单位增益带宽 unity-gain bandwidth频率响应 frequency response频响特性(曲线)response characteristic波特图 the Bode plot稳定性 stability补偿compensation比较器 comparator迟滞比较器 hysteresis comparator阶跃输入电压 step input voltage仪表放大器 instrumentation amplifier 隔离放大器 isolation amplifier对数放大器 log amplifier反对数放大器 antilog amplifier反馈通道 feedback path反向漏电流 reverse leakage current 相位 phase相移 phase shift锁相环 phase-locked loop(PLL)锁相环相位监测器 PLL phase detector与频 sum frequency差频difference frequency振荡器 oscillator RC振荡器 RC oscillatorLC 振荡器 LC oscillator正弦波振荡器 sinusoidal oscillator三角波发生器 triangular wave generator方波发生器 square wave generator幅度 magnitude电平 level饱与输出电平(电压) saturated output level 功率放大器 power amplifier交越失真 cross-over distortion甲类功率放大器 class A power amplifier乙类推挽功率放大器 class B push-pull power amplifier OTL 功率放大器 output transformerless power amplifier OCL 功率放大器 output capacitorless power amplifier半波整流 full-wave rectifier全波整流 half-wave rectifier电感滤波器 inductor filter电容滤波器 capacitor filter串联型稳压电源 series (voltage) regulator开关型稳压电源 switching (voltage) regulator集成稳压器 IC (voltage) regulator晶闸管及可控整流电路晶闸管 thyristor单结晶体管 unijunction transistor ( UJT )可控整流 controlled rectifier可控硅 silicon-controlled rectifier峰点 peak point谷点 valley point控制角 controlling angle导通角 turn-on angle二进制 binary二进制数 binary number十进制 decimal十六进制 hexadecimal二-十进制 binary coded decimal ( BCD )门电路 gate三态门 tri-state gate与门 AND gate或门 OR gate非门 NOT gate与非门 NAND gate或非门 NOR gate异或门 exclusive-OR gate反相器 inverter布尔代数 Boolean algebra真值表 truth table卡诺图 the Karnaugh map逻辑函数 logic function逻辑表达式 logic expression组合逻辑电路 combination logic circuit译码器编码器比较器半加器全加器decoder coder comparator half-adder full-adder七段显示器 seven-segment display 时序逻辑电路 sequential logic circuitR-S 触发器 R-S flip-flopD 触发器 D flip-flopJ-K 触发器 J-K flip-flop主从型触发器 master-slave flip-flop置位 set复位 reset直接置位端 direct-set terminal直接复位端 direct-reset terminal寄存器 register移位寄存器 shift register双向移位寄存器 bidirectional shift register 计数器 counter同步计数器 synchronous counter异步计数器 asynchronous counter加法计数器 adding counter减法计数器 subtracting counter 定时器 timer清除(清 0 ) clear载入 load时钟脉冲 clock pulse触发脉冲 trigger pulse上升沿下降沿时序图波形图positive edge negative edge timing diagram waveform单稳态触发器双稳态触发器无稳态振荡器晶体 crystal monostable flip-flop bistable flip-flop astable oscillator555 定时器 555 timer模拟信号 analog signal数字信号 digital signalAD 转换器 analog -digital converter (ADC)DA 转换器 digital-analog converter (DAC)半导体存储器只读存储器 read-only memory ( ROM ) 随机存取存储器 random-access memory ( RAM )电力系统 power system发电机 generator励磁 excitation励磁器 excitor电压 voltage电流 current升压变压器 step-up transformer母线 bus变压器 transformer空载损耗： no-load loss铁损： iron loss铜损： copper loss空载电流： no-load current有功损耗： reactive loss无功损耗： active loss输电系统 power transmission system 高压侧 high side输电线 transmission line高压: high voltage低压： low voltage中压： middle voltage功角稳定 angle stability稳定 stability电压稳定 voltage stability 暂态稳定 transient stability 电厂 power plant能量输送 power transfer交流直流电网落点ACDCpower system drop point开关站 switch station调节 regulation高抗 high voltage shunt reactor 并列得： apposable裕度 margin故障 fault三相故障 three phase fault分接头： tap切机 generator triping高顶值 high limited value 静态 static (state)动态 dynamic (state)机端电压控制 AVR电抗 reactance电阻 resistance功角 power angle有功(功率)active power 电容器： Capacitor电抗器： Reactor断路器： Breaker电动机： motor功率因数： power-factor定子： stator阻抗： impedance功角： power-angle电压等级： voltage grade有功负载: active load PLoad无功负载： reactive load档位： tap position电阻： resistor电抗： reactance电导： conductance电纳： susceptance上限:upper limit下限： lower limit正序阻抗： positive sequence impedance 负序阻抗： negative sequence impedance零序阻抗： zero sequence impedance 无功(功率)reactive power功率因数 power factor无功电流 reactive current斜率 slope额定 rating变比 ratio参考值 reference value电压互感器 PT分接头 tap仿真分析 simulation analysis下降率 droop rate传递函数 transfer function框图 block diagram受端 receive-side同步 synchronization保护断路器 circuit breaker摇摆 swing阻尼 damping无刷直流电机： Brusless DC motor刀闸(隔离开关)：Isolator机端 generator terminal变电站 transformer substation永磁同步电机：Permanent-magnet Synchronism Motor 异步电机： Asynchronous Motor三绕组变压器： three-column transformer ThrClnTrans 双绕组变压器： double-column transformer DblClmnTrans固定串联电容补偿 fixed series capacitor compensation 双回同杆并架 double-circuit lines on the same tower 单机无穷大系统 one machine - infinity bus system励磁电流： magnetizing current补偿度 degree of compensation Electromagnetic fields 电磁场失去同步 loss of synchronization装机容量 installed capacity无功补偿 reactive power compensation 故障切除时间 fault clearing time极限切除时间 critical clearing time强行励磁 reinforced excitation并联电容器： shunt capacitor下降特性 droop characteristics线路补偿器 LDC(line drop compensation)电机学 Electrical Machinery自动控制理论 Automatic Control Theory 电磁场 Electromagnetic Field微机原理 Principle of Microcomputer电工学 ElectrotechnicsPrinciple of circuits 电路原理Electrical Machinery 电机学电力系统稳态分析 Steady-State Analysis of Power System电力系统暂态分析 Transient-State Analysis of Power System电力系统继电保护原理 Principle of Electrical System's Relay Protection电力系统元件保护原理 Protection Principle of Power System 's Element电力系统内部过电压 Past VoltagewithinPower system模拟电子技术基础 Basis of Analogue Electronic Technique数字电子技术 Digital Electrical Technique电路原理实验 Lab、 of principle of circuits电气工程讲座 Lectures on electrical power production 电力电子基础 Basic fundamentals of power electronics 高电压工程 High voltage engineering电子专题实践 Topics on experimental project of electronics电气工程概论 Introduction to electrical engineering电子电机集成系统 electronic machine system电力传动与控制 Electrical Drive and Control电力系统继电保护 Power System Relaying ProtectionAC alternating current 交流电AC automatic control 自动控制ACA accident consequence assessment 事故后果评价ACB air circuit breaker 空气断路器ACC accident 故障、事故ACCUM accumulate accumulate 累计、蓄电池ACDS acourtic crack detection system 声裂纹检测系统ACT/S active side 带电部件、有功部件ACW anti-clockwise 反时针方向ACW anti-clockwise 反时针方向AD analog-digital 模拟-数字AEOD analysis and evaluation of operational data 运行数据分析与管理AFC automatic frequency control automatic following control 自动频率控制：自动跟踪控制AI artificial intelligence 人工智能ALT alternate 交变得、交替得ALTNTR alternator 同步发电机AM ammeter 电流表AMP ampere 安培AN air natural cooled 空气自然冷却AOC automatic overload control 自动过载控制APC automatic plant coordinate control automatic power control 机组自动协调控制：自动功率控制APP appendix auxiliary power plant 附录：辅助电源设备APS acessory power supply 辅助电源APU auxiliary power unit 辅助动力装置：辅助电源设备ARM armature 电枢、衔铁ASR automatic speed run up 自动升速ASU automatic synchronizing unit 自动同步系统AT auxiliary transformer 辅助变压器AUS auxiliary switch 辅助开关AUX auxiliany 辅助、备用AVL automatic voltage control 自动电压控制AVR automatic voltage regulator 自动调压器BAT battery 电池BD block decrease 闭锁减BDUC bus duct 母线导管、母线沟BDV blowdown voltage 击穿电压BF back feed 反馈BHP brake horse power 制动马力BI block increase 闭锁增BKR breaker 断路器BOS back-out system 补偿系统BOT build-operate-tranfer 建造-运行-移交BR brush 电刷、刷子BRKG breaking 断开BYC battery charger 电池充电器CA compressed air 压缩空气CAOS completely automatic operate system 全自动操作系统CAP capactty 电容、出力、容量CAP capacity 容量、功率。
三绕组变压器的最大短路损耗定义
三绕组变压器最大短路损耗探究三绕组变压器是一种常见的变压器类型，它由三个互相连接的线圈组成。
在使用中，我们需要了解最大短路损耗的概念，并对其进行探究。
最大短路损耗是指在变压器输出侧短路状态下，变压器所承受的最大功率损耗。
在三绕组变压器中，由于存在多个绕组，最大短路损耗的计算较为复杂。
首先，我们需要对三绕组变压器的结构进行了解。
三绕组变压器由高、中、低三个端子构成，其中中端为共用端。
对于三绕组变压器，我们可以将其等效为Y-Y连接、Y-△连接或△-Y连接三种形式。
针对不同的连接形式，最大短路损耗的计算方式也会有所不同。
以Y-△连接为例，我们可以通过以下计算公式来求解最大短路损耗：Pmax = 3 * Imax^2 * (R1 + R2 + R3)其中，Pmax为最大短路损耗，Imax为短路电流大小，R1、R2、R3为三个绕组的电阻值。
需要注意的是，此处的短路电流大小应为变压器额定电流的2倍，以保证变压器在短路状态下能够正常工作。
同时，最大短路损耗的计算公式也会因不同变压器型号而有所区别。
除了计算最大短路损耗外，我们还需要了解短路损耗的原因。
短路损耗产生的原因有两种，一种是线圈电阻损耗，另一种是感应电流损耗。
前者主要由电流通过线圈时产生的电阻损耗引起，后者则是由于短路电流在变压器中引起的感应电流造成的损耗。
因此，在实际使用中，需要采取措施来减小短路损耗。
一种常见的方法是通过改变变压器的绕组结构来减小进出线路的阻抗差异。
此外，还可以通过安装保护设备来及时发现和排除短路故障，保证变压器的正常运行。
总之，最大短路损耗是三绕组变压器使用过程中需要重点关注的问题之一。
了解其概念和计算方法对于确保变压器的安全和稳定运行具有重要的意义。
专业英语--电力电子方面
专业英语－－电力电子方面AbsorberCircuit汲取电路ＡＣ／ＡＣFrequencyConverter交交变频电路ACpowercontrol交流电力操纵ACPowerController交流调功电路ACPowerElectronicSwitch交流电力电子开关AcV oltageController交流调压电路AsynchronousModulation异步调制BakerClampingCircuit贝克箝位电路Bi-directionalTriodeThyristor双向晶闸管BipolarJunctionTransistor--BJT双极结型晶体管Boost-BuckChopper升落压斩波电路BoostChopper升压斩波电路BoostConverter升压变换器BridgeReversibleChopper桥式可逆斩波电路BuckChopper落压斩波电路BuckConverter落压变换器Commutation换流ConductionAngle导通角ConstantV oltageConstantFrequency--CVCF恒压恒频ContinuousConduction--CCM〔电流〕连续模式ControlCircuit操纵电路CukCircuitCUK斩波电路CurrentReversibleChopper电流可逆斩波电路CurrentSourceTypeInverter--CSTI电流〔源〕型逆变电路Cycloconvertor周波变流器DC-AC-DCConverter直交直电路DCChopping直流斩波DCChoppingCircuit直流斩波电路DC-DCConverter直流－直流变换器DeviceCommutation器件换流DirectCurrentControl直截了当电流操纵DiscontinuousConductionmode〔电流〕断续模式displacementfactor位移因数printedcircuit印制电路printedwiring印制线路printedboard印制板printedcircuitboard印制板电路printedwiringboard印制线路板printedcomponent印制元件printedcontact印制接点printedboardassembly印制板装配board板rigidprintedboard刚性印制板flexibleprintedcircuit挠性印制电路flexibleprintedwiring挠性印制线路flushprintedboard齐平印制板metalcoreprintedboard金属芯印制板metalbaseprintedboard金属基印制板mulit-wiringprintedboard多重布线印制板moldedcircuitboard模塑电路板discretewiringboard散线印制板microwireboard微线印制板buile-upprintedboard积层印制板surfacelaminarcircuit外表层合电路板B2itprintedboard埋进凸块连印制板chiponboard载芯片板buriedresistanceboard埋电阻板motherboard母板daughterboard子板backplane背板bareboard裸板copper-invar-copperboard键盘板夹心板dynamicflexboard动态挠性板staticflexboard静态挠性板break-awayplanel可断拼板cable电缆flexibleflatcable(FFC)挠性扁平电缆membraneswitch薄膜开关hybridcircuit混合电路thickfilm厚膜thickfilmcircuit厚膜电路thinfilm薄膜thinfilmhybridcircuit薄膜混合电路interconnection互连conductortraceline导线flushconductor齐平导线transmissionline传输线crossover跨交edge-boardcontact板边插头stiffener增强板substrate基底realestate基板面conductorside导线面componentside元件面solderside焊接面printing印制grid网格pattern图形conductivepattern导电图形non-conductivepattern非导电图形legend字符mark标志basematerial基材laminate层压板metal-cladbadematerial覆金属箔基材copper-cladlaminate(CCL)覆铜箔层压板compositelaminate复合层压板thinlaminate薄层压板basismaterial基体材料prepreg预浸材料bondingsheet粘结片preimpregnatedbondingsheer预浸粘结片epoxyglasssubstrate环氧玻璃基板masslaminationpanel预制内层覆箔板corematerial内层芯板bondinglayer粘结层filmadhesive粘结膜unsupportedadhesivefilm无支撑胶粘剂膜coverlayer(coverlay)覆盖层stiffenermaterial增强板材copper-cladsurface铜箔面foilremovalsurface往铜箔面uncladlaminatesurface层压板面basefilmsurface基膜面adhesivefaec胶粘剂面platefinish原始光洁面mattfinish粗面lengthwisedirection纵向crosswisedirection模向cuttosizepanel剪切板ultrathinlaminate超薄型层压板A-stageresinA阶树脂B-stageresinB阶树脂C-stageresinC阶树脂epoxyresin环氧树脂phenolicresin酚醛树脂polyesterresin聚酯树脂polyimideresin聚酰亚胺树脂bismaleimide-triazineresin双马来酰亚胺三嗪树脂acrylicresin丙烯酸树脂melamineformaldehyderesin三聚氰胺甲醛树脂polyfunctionalepoxyresin多官能环氧树脂brominatedepoxyresin溴化环氧树脂epoxynovolac环氧酚醛fluroresin氟树脂siliconeresin硅树脂silane硅烷polymer聚合物amorphouspolymer无定形聚合物crystallinepolamer结晶现象dimorphism双晶现象copolymer共聚物synthetic合成树脂thermosettingresin热固性树脂thermoplasticresin热塑性树脂photosensitiveresin感光性树脂epoxyvalue环氧值dicyandiamide双氰胺binder粘结剂adesive胶粘剂curingagent固化剂flameretardant阻燃剂opaquer遮光剂plasticizers增塑剂unsatuiatedpolyester不饱和聚酯polyester聚酯薄膜polyimidefilm(PI)聚酰亚胺薄膜polytetrafluoetylene(PTFE)聚四氟乙烯reinforcingmaterial增强材料glassfiber玻璃纤维E-glassfibreE玻璃纤维D-glassfibreD玻璃纤维S-glassfibreS玻璃纤维glassfabric玻璃布non-wovenfabric非织布glassmats玻璃纤维垫yarn纱线filament单丝strand绞股weftyarn纬纱warpyarn经纱denier但尼尔warp-wise经向threadcount织物经纬密度weavestructure织物组织plainstructure平纹组织greyfabric坏布wovenscrim稀松织物bowofweave弓纬endmissing断经mis-picks缺纬bias纬歪crease折痕waviness云织fisheye鱼眼featherlength毛圈长mark厚薄段split裂缝twistofyarn捻度sizecontent浸润剂含量sizeresidue浸润剂残留量finishlevel处理剂含量size浸润剂couplintagent偶联剂finishedfabric处理织物polyarmidefiber聚酰胺纤维aromaticpolyamidepaper聚芳酰胺纤维纸breakinglength断裂长heightofcapillaryrise吸水高度wetstrengthretention湿强度保持率whitenness白度ceramics陶瓷conductivefoil导电箔copperfoil铜箔rolledcopperfoil压延铜箔annealedcopperfoil退火铜箔thincopperfoil薄铜箔adhesivecoatedfoil涂胶铜箔resincoatedcopperfoil涂胶脂铜箔compositemetallicmaterial复合金属箔carrierfoil载体箔invar殷瓦foilprofile箔〔剖面〕轮廓shinyside光面matteside粗糙面treatedside处理面stainproofing防锈处理doubletreatedfoil双面处理铜箔shematicdiagram原理图logicdiagram逻辑图printedwirelayout印制线路布设masterdrawing布设总图computeraideddrawing计算机辅助制图computercontrolleddisplay计算机操纵显示placement布局routing布线layout布图设计rerouting重布simulation模拟logicsimulation逻辑模拟circitsimulation电路模拟timingsimulation时序模拟modularization模块化layouteffeciency布线完成率MDFdatabse机器描述格式数据库designdatabase设计数据库designorigin设计原点optimization(design)优化〔设计〕predominantaxis供设计优化坐标轴tableorigin表格原点mirroring镜像drivefile驱动文件intermediatefile中间文件manufacturingdocumentation制造文件queuesupportdatabase队列支撑数据库componentpositioning元件安置graphicsdispaly图形显示scalingfactor比例因子scanfilling扫描填充rectanglefilling矩形填充regionfilling填充域physicaldesign实体设计logicdesign逻辑设计logiccircuit逻辑电路hierarchicaldesign层次设计top-downdesign自顶向下设计bottom-updesign自底向上设计net线网digitzing数字化designrulechecking设计规那么检查router(CAD)走〔布〕线器netlist网络表subnet子线网objectivefunction目标函数postdesignprocessing(PDP)设计后处理interactivedrawingdesign交互式制图设计costmetrix费用矩阵engineeringdrawing工程图blockdiagram方块框图moze迷宫componentdensity元件密度travelingsalesmanproblem回售货员咨询题degreesfreedom自由度outgoingdegree进度incomingdegree出度manhattondistance曼哈顿距离euclideandistance欧几里德距离network网络array阵列segment段logic逻辑logicdesignautomation逻辑设计自动化separatedtime分线separatedlayer分层definitesequence定顺序conduction(track)导线〔通道〕conductorwidth导线〔体〕宽度conductorspacing导线距离conductorlayer导线层conductorline/space导线宽度/间距conductorlayerNo.1第一导线层roundpad圆形盘squarepad方形盘diamondpad菱形盘oblongpad长方形焊盘bulletpad子弹形盘teardroppad泪滴盘snowmanpad雪人盘V-shapedpadV形盘annularpad环形盘non-circularpad非圆形盘isolationpad隔离盘monfunctionalpad非功能连接盘offsetland偏置连接盘back-bardland腹〔背〕裸盘anchoringspaur盘址landpattern连接盘图形landgridarray连接盘网格阵列annularring孔环componenthole元件孔mountinghole安装孔supportedhole支撑孔unsupportedhole非支撑孔via导通孔platedthroughhole(PTH)镀通孔accesshole余隙孔blindvia(hole)盲孔buriedviahole埋孔buriedblindvia埋,盲孔anylayerinnerviahole任意层内部导通孔alldrilledhole全部钻孔toalinghole定位孔landlesshole无连接盘孔interstitialhole中间孔landlessviahole无连接盘导通孔pilothole引导孔terminalclearomeehole端接全隙孔dimensionedhole准尺寸孔via-in-pad在连接盘中导通孔holelocation孔位holedensity孔密度holepattern孔图drilldrawing钻孔图assemblydrawing装配图datumreferan参考基准1〕元件设备三绕组变压器：three-columntransformerThrClnTrans双绕组变压器：double-columntransformerDblClmnTrans 电容器：Capacitor并联电容器：shuntcapacitor电抗器：Reactor母线：Busbar输电线：TransmissionLine发电厂：powerplant断路器：Breaker刀闸(隔离开关)：Isolator分接头：tap电动机：motor〔2〕状态参数有功：activepower无功：reactivepower电流：current容量：capacity电压：voltage档位：tapposition有功损耗：reactiveloss无功损耗：activeloss功率因数：power-factor功率：power功角：power-angle电压等级：voltagegrade空载损耗：no-loadloss铁损：ironloss铜损：copperloss空载电流：no-loadcurrent阻抗：impedance正序阻抗：positivesequenceimpedance负序阻抗：negativesequenceimpedance零序阻抗：zerosequenceimpedance电阻：resistor电抗：reactance电导：conductance电纳：susceptance无功负载：reactiveload或者QLoad有功负载:activeloadPLoad远测：YC(telemetering)远信：YX励磁电流(转子电流)：magnetizingcurrent定子：stator功角：power-angle上限:upperlimit下限：lowerlimit并列的：apposable高压:highvoltage低压：lowvoltage中压：middlevoltage电力系统powersystem发电机generator励磁excitation励磁器excitor电压voltage电流current母线bus变压器transformer升压变压器step-uptransformer高压侧highside输电系统powertransmissionsystem输电线transmissionline固定串联电容补偿fixedseriescapacitorcompensation 稳定stability电压稳定voltagestability功角稳定anglestability暂态稳定transientstability电厂powerplant能量输送powertransfer交流AC装机容量installedcapacity电网powersystem落点droppoint开关站switchstation双回同杆并架double-circuitlinesonthesametower 变电站transformersubstation补偿度degreeofcompensation高抗highvoltageshuntreactor无功补偿reactivepowercompensation故障fault调节regulation裕度magin三相故障threephasefault故障切除时刻faultclearingtime极限切除时刻criticalclearingtime切机generatortriping高顶值highlimitedvalue强行励磁reinforcedexcitation线路补偿器LDC(linedropcompensation)机端generatorterminal静态static(state)动态dynamic(state)单机无穷大系统onemachine-infinitybussystem 机端电压操纵A VR电抗reactance电阻resistance功角powerangle有功〔功率〕activepower无功〔功率〕reactivepower功率因数powerfactor无功电流reactivecurrent下落特性droopcharacteristics歪率slope额定rating变比ratio参考值referencevalue电压互感器PT分接头tap下落率drooprate仿真分析simulationanalysis传递函数transferfunction框图blockdiagram受端receive-side裕度margin同步synchronization失往同步lossofsynchronization阻尼damping摇摆swing保卫断路器circuitbreaker电阻：resistance电抗：reactance阻抗：impedance电导：conductance电纳：susceptance导纳：admittance电感：inductance电容:capacitance金属化聚丙烯膜电容\metallizationpolypropylenefilmcapacitor\插件磁芯电感\magneticcoreinductance\涤纶电容\terylenecapacity\接地片\groundlug\碳膜电阻\carbonfilmresistor\瓷片电容\ceramicdisccapacitor\莲花插座\lotussocket\贴片磁珠\coatedmageticbead贴片三极管\coateddynatron话题：专业词汇1backplane背板2Bandgapvoltagereference带隙电压参考3benchtopsupply工作台电源4BlockDiagram方块图5BodePlot波特图6Bootstrap自举7BottomFETBottomFET8bucketcapcitor桶形电容9chassis机架10Combi-senseCombi-sense11constantcurrentsource恒流源12CoreSataration铁芯饱和13crossoverfrequency交叉频率14currentripple纹波电流15CyclebyCycle逐周期16cycleskipping周期跳步17DeadTime死区时刻18DIETemperature核心温度19Disable非使能，无效，禁用，关断20dominantpole主极点21Enable使能，有效，启用22ESDRatingESD额定值23EvaluationBoard评估板24Exceedingthespecificationsbelowmayresultinpermanentdamagetothedevice,ordevicemalfunctio n.OperationoutsideoftheparametersspecifiedintheElectricalCharacteristicssectionisnotimplied.超过下面的规格使用可能引起永久的设备损害或设备故障。
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三绕组变压器：three-column transformer ThrClnTrans 双绕组变压器：double-column transformer DblClmnTrans 电容器：Capacitor并联电容器：shunt capacitor电抗器：Reactor母线：Busbar输电线：TransmissionLine发电厂：power plant断路器：Breaker刀闸(隔离开关)：Isolator分接头：tap电动机：motor（2）状态参数有功：active power无功：reactive power电流：current容量：capacity电压：voltage档位：tap position有功损耗：reactive loss无功损耗：active loss功率因数：power-factor功率：power功角：power-angle电压等级：voltage grade空载损耗：no-load loss铁损：iron loss铜损：copper loss空载电流：no-load current阻抗：impedance正序阻抗：positive sequence impedance 负序阻抗：negative sequence impedance 零序阻抗：zero sequence impedance电阻：resistor电抗：reactance电导：conductance电纳：susceptance无功负载：reactive load 或者QLoad有功负载: active load PLoad遥测：YC (telemetering)遥信：YX励磁电流(转子电流)：magnetizing current 定子：stator功角：power-angle上限:upper limit下限：lower limit并列的：apposable高压: high voltage低压：low voltage中压：middle voltage电力系统power system发电机generator励磁excitation励磁器excitor电压voltage电流current母线bus变压器transformer升压变压器step-up transformer高压侧high side输电系统power transmission system输电线transmission line固定串联电容补偿fixed series capacitor compensation 稳定stability电压稳定voltage stability功角稳定angle stability暂态稳定transient stability电厂power plant能量输送power transfer交流AC装机容量installed capacity电网power system落点drop point开关站switch station双回同杆并架double-circuit lines on the same tower 变电站transformer substation补偿度degree of compensation高抗high voltage shunt reactor无功补偿reactive power compensation故障fault调节regulation裕度magin三相故障three phase fault故障切除时间fault clearing time极限切除时间critical clearing time切机generator triping高顶值high limited value强行励磁reinforced excitation线路补偿器LDC(line drop compensation)机端generator terminal静态static (state)动态dynamic (state)单机无穷大系统one machine - infinity bus system 机端电压控制AVR电抗reactance电阻resistance功角power angle有功（功率）active power无功（功率）reactive power功率因数power factor无功电流reactive current下降特性droop characteristics斜率slope额定rating变比ratio参考值reference value电压互感器PT分接头tap下降率droop rate仿真分析simulation analysis传递函数transfer function框图block diagram受端receive-side裕度margin同步synchronization失去同步loss of synchronization阻尼damping摇摆swing保护断路器circuit breaker电阻：resistance电抗：reactance阻抗：impedance电导：conductance电纳：susceptance导纳：admittance电感：inductance电容: capacitancebackplane 背板Band gap voltage reference 带隙电压参考benchtop supply 工作台电源Block Diagram 方块图Bode Plot 波特图Bootstrap 自举Bottom FET Bottom FETbucket capcitor 桶形电容chassis 机架Combi-sense Combi-senseconstant current source 恒流源Core Sataration 铁芯饱和crossover frequency 交叉频率current ripple 纹波电流Cycle by Cycle 逐周期cycle skipping 周期跳步Dead Time 死区时间DIE Temperature 核心温度Disable 非使能，无效，禁用，关断dominant pole 主极点Enable 使能，有效，启用ESD Rating ESD 额定值Evaluation Board 评估板Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied.超过下面的规格使用可能引起永久的设备损害或设备故障。
建议不要工作在电特性表规定的参数范围以外。
Failling edge 下降沿26 figure of merit 品质因数27 float charge voltage 浮充电压28 flyback power stage 反驰式功率级29 forward voltage drop 前向压降30 free-running 自由运行31 Freewheel diode 续流二极管32 Full load 满负载33 gate drive 栅极驱动34 gate drive stage 栅极驱动级35 gerber plot Gerber 图36 ground plane 接地层37 Henry 电感单位：亨利38 Human Body Model 人体模式39 Hysteresis 滞回40 inrush current 涌入电流41 Inverting 反相42 jittery 抖动43 Junction 结点44 Kelvin connection 开尔文连接45 Lead Frame 引脚框架46 Lead Free 无铅47 level-shift 电平移动48 Line regulation 电源调整率49 load regulation 负载调整率50 Lot Number 批号51 Low Dropout 低压差52 Miller 密勒53 node 节点54 Non-Inverting 非反相55 novel 新颖的56 off state 关断状态57 Operating supply voltage 电源工作电压58 out drive stage 输出驱动级59 Out of Phase 异相60 Part Number 产品型号61 pass transistor pass transistor62 P-channel MOSFET P沟道MOSFET63 Phase margin 相位裕度64 Phase Node 开关节点65 portable electronics 便携式电子设备66 power down 掉电67 Power Good 电源正常68 Power Groud 功率地69 Power Save Mode 节电模式70 Power up 上电71 pull down 下拉72 pull up 上拉73 Pulse by Pulse 逐脉冲（Pulse by Pulse）74 push pull converter 推挽转换器75 ramp down 斜降76 ramp up 斜升77 redundant diode 冗余二极管78 resistive divider 电阻分压器79 ringing 振铃80 ripple current 纹波电流81 rising edge 上升沿82 sense resistor 检测电阻83 Sequenced Power Supplys 序列电源84 shoot-through 直通，同时导通85 stray inductances. 杂散电感86 sub-circuit 子电路87 substrate 基板88 Telecom 电信89 Thermal Information 热性能信息90 thermal slug 散热片91 Threshold 阈值92 timing resistor 振荡电阻93 Top FET Top FET94 Trace 线路，走线，引线95 Transfer function 传递函数96 Trip Point 跳变点97 turns ratio 匝数比，＝Np / Ns。
（初级匝数/次级匝数）98 Under Voltage Lock Out (UVLO) 欠压锁定99 Voltage Reference 电压参考100 voltage-second product 伏秒积101 zero-pole frequency compensation 零极点频率补偿102 beat frequency 拍频103 one shots 单击电路104 scaling 缩放105 ESR 等效串联电阻106 Ground 地电位107 trimmed bandgap 平衡带隙108 dropout voltage 压差109 large bulk capacitance 大容量电容110 circuit breaker 断路器111 charge pump 电荷泵112 overshoot 过冲三绕组变压器：three-column transformer ThrClnTrans双绕组变压器：double-column transformer DblClmnTrans 电容器：Capacitor并联电容器：shunt capacitor电抗器：Reactor母线：Busbar输电线：TransmissionLine发电厂：power plant断路器：Breaker刀闸(隔离开关)：Isolator分接头：tap电动机：motor（2）状态参数有功：active power无功：reactive power电流：current容量：capacity电压：voltage档位：tap position有功损耗：reactive loss无功损耗：active loss功率因数：power-factor功率：power功角：power-angle电压等级：voltage grade空载损耗：no-load loss铁损：iron loss铜损：copper loss空载电流：no-load current阻抗：impedance正序阻抗：positive sequence impedance 负序阻抗：negative sequence impedance 零序阻抗：zero sequence impedance电阻：resistor电抗：reactance电导：conductance电纳：susceptance无功负载：reactive load 或者QLoad有功负载: active load PLoad遥测：YC(telemetering)遥信：YX励磁电流(转子电流)：magnetizing current 定子：stator功角：power-angle上限:upper limit下限：lower limit并列的：apposable高压: high voltage低压：low voltage中压：middle voltage电力系统power system发电机generator励磁excitation励磁器excitor电压voltage电流current母线bus变压器transformer升压变压器step-up transformer高压侧high side输电系统power transmission system输电线transmission line固定串联电容补偿fixed series capacitor compensation 稳定stability电压稳定voltage stability功角稳定angle stability暂态稳定transient stability电厂power plant能量输送power transfer交流AC装机容量installed capacity电网power system落点drop point开关站switch station双回同杆并架double-circuit lines on the same tower 变电站transformer substation补偿度degree of compensation高抗high voltage shunt reactor无功补偿reactive power compensation故障fault调节regulation裕度magin三相故障three phase fault故障切除时间fault clearing time极限切除时间critical clearing time切机generator triping高顶值high limited value强行励磁reinforced excitation线路补偿器LDC(line drop compensation)机端generator terminal静态static (state)动态dynamic (state)单机无穷大系统one machine - infinity bus system 机端电压控制AVR电抗reactance电阻resistance功角power angle有功（功率）active power无功（功率）reactive power功率因数power factor无功电流reactive current下降特性droop characteristics斜率slope额定rating变比ratio参考值reference value电压互感器PT分接头tap下降率droop rate仿真分析simulation analysis传递函数transfer function框图block diagram受端receive-side裕度margin同步synchronization失去同步loss of synchronization阻尼damping摇摆swing保护断路器circuit breaker电阻：resistance电抗：reactance阻抗：impedance电导：conductance电纳：susceptance导纳：admittance电感：inductance电容: capacitancecoupling 耦合intermittent 周期的dislocation 错位propeller 螺旋桨switchgear 配电装置dispersion 差量flange 法兰盘dielectric 介电的binder 胶合剂alignment 定位elastomer 合成橡胶corollary 必然的结果rabbet 插槽vent 通风孔subtle 敏感的gearbox 变速箱plate 电镀crucial 决定性的flexible 柔性的technics 工艺ultimate 最终的resilience 弹性vendor 自动售货机partition 分类rigid 刚性的prototype 样机diagram 特性曲线interfere 干涉compatible 兼容的simulation 模拟clutch 离合器refinement 精加工fixture 夹具torque 扭矩responsive 敏感的tensile 拉伸cushion 减震器rib 肋strength 强度packing 包装metallized 金属化stress 应力mitigate 减轻trade off 折衷方案yield 屈伸line shaft 中间轴matrix 母体inherent 固有的spindle 主轴aperture 孔径conformance 适应性axle 心轴turbulence 扰动specification 规范semipermanent 半永久性的enclosure 机壳specialization 规范化bolt 螺栓oscillation 振幅calling 职业nut 螺母anneal 退火vitalize 激发screw 螺丝polymer 聚合体revelation 揭示fastner 紧固件bind 凝固dissemination 分发rivit 铆钉mount 支架booster 推进器hub 轴套distortion 变形contractual 契约的coaxial 同心的module 模块verdict 裁决crank 曲柄slide 滑块malfunction 故障inertia 惰性medium 介质allegedly 假定active 活性的dissipation 损耗controversy 辩论lubrication 润滑assembly 总装dictate 支配graphite 石墨encapsulate 封装i ncumbent 义不容辞的derivative 派生物adhesive 粘合剂validation 使生效contaminate 沾染turbine 涡轮procurement 收购asperity 粗糙bearing 支撑架mortality 失败率metalworking 金属加工isostatic 均衡的shed light on 阐明viscous 粘稠的osculate 接触adversely 有害的grinding 研磨imperative 强制的consistency 连续性corrosin 侵蚀lattice 晶格fitness 适应性flush 冲洗fracture 断裂warrant 保证inhibitor 防腐剂diffusivity 扩散率turning 车工dispersant 分散剂vice versa 反之亦然ways 导轨deteriorate 降低tribological 摩擦的hybrid 混合物neutralize 平衡screen 屏蔽ID=inside diameter pulley 滑轮exclusion 隔绝OD=outside diameter hydraulic 液压的insulation 绝缘reciprocate 往复运动delicate 精密的elaborate 加工dress 精整dampen 阻尼incontrovertible 无可争议的by and large 大体上pivotal 中枢的luminous 发光的plastic 塑胶utilitarian 功利主义out of round 失园organic 有机的grass root 基层premature 过早的film 薄膜state-of-the -art 技术发展水平guard 防护罩polyester 聚酯blade 托板permeate 渗入epoxy 环氧的carrier 载体spillage 溢出polypropylene 聚丙烯chuck 卡盘erosion 浸蚀photoconductive 光敏的infeed 横向进给routine 程序miniaturization 小型化lapping 抛光postprocess 后置处理asynchronism 异步milling 洗削solder-bump 焊点synchronization 同步speciality 专业grid 栅格respond 响应stroke 行程impedance 阻抗feedback 反馈attachment 备件approximately 大约aberrance 畸变tapered 楔形的purpo rted 据说steady 稳态的casting 铸件consumable 消费品dynamic 动态的index 换档inductance 电感transient 瞬态的stop 挡块capacitance 电容coordinate 坐标contour 轮廓resistance 电容curve 曲线machine center 加工中心audion 三极管diagram 特性曲线capitalize 投资diode 二极管history 关系曲线potentiometer 电位器transistor 晶体管gradient 斜率know-how 实践知识choker 扼流圈parabola 抛物线potted 封装的filter 滤波器root 根mechatronics 机电一体化transformer 变压器eigenvalue 特征值stem from 起源于fuse 保险丝function 函数rule-based 基于规则的annular core 磁环vector 向量consolidation 巩固radiator 散热器reciprocal 倒数energize 激发regulator 稳压器virtual value 有效值synchronous 同时发生bobbin 骨架square root 平方根socket 插孔tape 胶带cube 立方polarity 极性ceramic capacitor 瓷片电容integral 积分armature 电枢electrolytic C 电解电容differential 微分installment 分期付款self-tapping screw 自攻螺丝hisgram 直方图lobe 凸起footprint 封装ratio 比率plunge 钻入resin 松香grade down 成比例降低servo 伺服机构solderability 可焊性proportion 比例dedicated 专用的shock 机械冲击inverse ratio 反比interpolation 插补endurance 耐久性direct ratio 正比compensation 校正initial value 初始值plus 加upload 加载flashing 飞弧subtract 减overload 过载canned 千篇一律的multiply 乘lightload 轻载lot 抽签divide 除stagger 交错排列parallel 并联impedance 阻抗traverse 横向in series 串联damp 阻尼longitudinal 纵向的equivalent 等效的reactance 电抗latitudinal 横向的terminal 终端admittance 导纳restrain 约束creep 蠕动susceptance 电纳square 平方Hyperlink 超级连接spring 触发memo 备忘录wastage 损耗presentation 陈述principle 原理binder 打包planer 刨床source program 源程序Client-Server Model客户机server 服务器table 表query 查询form 表单report 报表macro 宏module 模块field 字段record 记录printed circuit 印制电路printed wiring 印制线路printed board 印制板printed circuit board 印制板电路printed wiring board 印制线路板printed component 印制元件printed contact 印制接点printed board assembly 印制板装配board 板rigid printed board 刚性印制板flexible printed circuit 挠性印制电路flexible printed wiring 挠性印制线路flush printed board 齐平印制板metal core printed board 金属芯印制板metal base printed board 金属基印制板mulit-wiring printed board 多重布线印制板molded circuit board 模塑电路板discrete wiring board 散线印制板micro wire board 微线印制板buile-up printed board 积层印制板surface laminar circuit 表面层合电路板B2it printed board 埋入凸块连印制板chip on board 载芯片板buried resistance board 埋电阻板mother board 母板daughter board 子板backplane 背板bare board 裸板copper-invar-copper board 键盘板夹心板dynamic flex board 动态挠性板static flex board 静态挠性板break-away planel 可断拼板cable 电缆flexible flat cable (FFC) 挠性扁平电缆membrane switch 薄膜开关hybrid circuit 混合电路thick film 厚膜thick film circuit 厚膜电路thin film 薄膜thin film hybrid circuit 薄膜混合电路interconnection 互连conductor trace line 导线flush conductor 齐平导线transmission line 传输线crossover 跨交edge-board contact 板边插头stiffener 增强板substrate 基底real estate 基板面conductor side 导线面component side 元件面solder side 焊接面printing 印制grid 网格pattern 图形conductive pattern 导电图形non-conductive pattern 非导电图形legend 字符mark 标志base material 基材laminate 层压板metal-clad bade material 覆金属箔基材copper-clad laminate (CCL) 覆铜箔层压板composite laminate 复合层压板thin laminate 薄层压板basis material 基体材料prepreg 预浸材料bonding sheet 粘结片preimpregnated bonding sheer 预浸粘结片epoxy glass substrate 环氧玻璃基板mass lamination panel 预制内层覆箔板core material 内层芯板bonding layer 粘结层film adhesive 粘结膜unsupported adhesive film 无支撑胶粘剂膜cover layer (cover lay) 覆盖层stiffener material 增强板材copper-clad surface 铜箔面foil removal surface 去铜箔面unclad laminate surface 层压板面base film surface 基膜面adhesive faec 胶粘剂面plate finish 原始光洁面matt finish 粗面length wise direction 纵向cross wise direction 模向cut to size panel 剪切板ultra thin laminate 超薄型层压板A-stage resin A阶树脂B-stage resin B阶树脂C-stage resin C阶树脂epoxy resin 环氧树脂phenolic resin 酚醛树脂polyester resin 聚酯树脂polyimide resin 聚酰亚胺树脂bismaleimide-triazine resin 双马来酰亚胺三嗪树脂acrylic resin 丙烯酸树脂melamine formaldehyde resin 三聚氰胺甲醛树脂polyfunctional epoxy resin 多官能环氧树脂brominated epoxy resin 溴化环氧树脂epoxy novolac 环氧酚醛fluroresin 氟树脂silicone resin 硅树脂silane 硅烷polymer 聚合物amorphous polymer 无定形聚合物crystalline polamer 结晶现象dimorphism 双晶现象copolymer 共聚物synthetic 合成树脂thermosetting resin 热固性树脂thermoplastic resin 热塑性树脂photosensitive resin 感光性树脂epoxy value 环氧值dicyandiamide 双氰胺binder 粘结剂adesive 胶粘剂curing agent 固化剂flame retardant 阻燃剂opaquer 遮光剂plasticizers 增塑剂unsatuiated polyester 不饱和聚酯polyester 聚酯薄膜polyimide film (PI) 聚酰亚胺薄膜polytetrafluoetylene (PTFE) 聚四氟乙烯reinforcing material 增强材料glass fiber 玻璃纤维E-glass fibre E玻璃纤维D-glass fibre D玻璃纤维S-glass fibre S玻璃纤维glass fabric 玻璃布non-woven fabric 非织布glass mats 玻璃纤维垫yarn 纱线filament 单丝strand 绞股weft yarn 纬纱warp yarn 经纱denier 但尼尔warp-wise 经向thread count 织物经纬密度weave structure 织物组织plain structure 平纹组织grey fabric 坏布woven scrim 稀松织物bow of weave 弓纬end missing 断经mis-picks 缺纬bias 纬斜crease 折痕waviness 云织fish eye 鱼眼feather length 毛圈长mark 厚薄段split 裂缝twist of yarn 捻度size content 浸润剂含量size residue 浸润剂残留量finish level 处理剂含量size 浸润剂couplint agent 偶联剂finished fabric 处理织物polyarmide fiber 聚酰胺纤维aromatic polyamide paper 聚芳酰胺纤维纸breaking length 断裂长height of capillary rise 吸水高度wet strength retention 湿强度保留率whitenness 白度ceramics 陶瓷conductive foil 导电箔copper foil 铜箔rolled copper foil 压延铜箔annealed copper foil 退火铜箔thin copper foil 薄铜箔adhesive coated foil 涂胶铜箔resin coated copper foil 涂胶脂铜箔composite metallic material 复合金属箔carrier foil 载体箔invar 殷瓦foil profile 箔（剖面）轮廓shiny side 光面matte side 粗糙面treated side 处理面stain proofing 防锈处理double treated foil 双面处理铜箔shematic diagram 原理图logic diagram 逻辑图printed wire layout 印制线路布设master drawing 布设总图computer aided drawing 计算机辅助制图computer controlled display 计算机控制显示placement 布局routing 布线layout 布图设计rerouting 重布simulation 模拟logic simulation 逻辑模拟circit simulation 电路模拟timing simulation 时序模拟modularization 模块化layout effeciency 布线完成率MDF databse 机器描述格式数据库design database 设计数据库design origin 设计原点optimization (design) 优化（设计）predominant axis 供设计优化坐标轴table origin 表格原点mirroring 镜像drive file 驱动文件intermediate file 中间文件manufacturing documentation 制造文件queue support database 队列支撑数据库component positioning 元件安置graphics dispaly 图形显示scaling factor 比例因子scan filling 扫描填充rectangle filling 矩形填充region filling 填充域physical design 实体设计logic design 逻辑设计logic circuit 逻辑电路hierarchical design 层次设计top-down design 自顶向下设计bottom-up design 自底向上设计net 线网digitzing 数字化design rule checking 设计规则检查router (CAD) 走（布）线器net list 网络表subnet 子线网objective function 目标函数post design processing (PDP) 设计后处理interactive drawing design 交互式制图设计cost metrix 费用矩阵engineering drawing 工程图block diagram 方块框图moze 迷宫component density 元件密度traveling salesman problem 回售货员问题degrees freedom 自由度out going degree 入度incoming degree 出度manhatton distance 曼哈顿距离euclidean distance 欧几里德距离network 网络array 阵列segment 段logic 逻辑logic design automation 逻辑设计自动化separated time 分线separated layer 分层definite sequence 定顺序conduction (track) 导线（通道）conductor width 导线（体）宽度conductor spacing 导线距离conductor layer 导线层conductor line/space 导线宽度/间距conductor layer No.1 第一导线层round pad 圆形盘square pad 方形盘diamond pad 菱形盘oblong pad 长方形焊盘bullet pad 子弹形盘teardrop pad 泪滴盘snowman pad 雪人盘V-shaped pad V形盘annular pad 环形盘non-circular pad 非圆形盘isolation pad 隔离盘monfunctional pad 非功能连接盘offset land 偏置连接盘back-bard land 腹（背）裸盘anchoring spaur 盘址land pattern 连接盘图形land grid array 连接盘网格阵列annular ring 孔环component hole 元件孔mounting hole 安装孔supported hole 支撑孔unsupported hole 非支撑孔via 导通孔plated through hole (PTH) 镀通孔access hole 余隙孔blind via (hole) 盲孔buried via hole 埋孔buried blind via 埋,盲孔any layer inner via hole 任意层内部导通孔all drilled hole 全部钻孔toaling hole 定位孔landless hole 无连接盘孔interstitial hole 中间孔landless via hole 无连接盘导通孔pilot hole 引导孔terminal clearomee hole 端接全隙孔dimensioned hole 准尺寸孔via-in-pad 在连接盘中导通孔hole location 孔位hole density 孔密度hole pattern 孔图drill drawing 钻孔图assembly drawing 装配图datum referan 参考基准电流current电压voltage功率power频率frequency电阻resistance电容capacitance电抗reactance电阻率resistivity阻抗impedance相，相位phase有功功率active power无功功率reactive power视在功率apparent power装设功率installed power安培ampere (A)伏volt (V)欧姆ohm赫兹hertz (HZ)瓦watt (W)供电局power supply authority 电力公司power supply company 发电厂power plant变电所substation配电站distribution substation配变电站transformer station终端变电站terminal substation车间变电站substation in workshop : 室内变电站indoor substation自动变电站automatic substation 成套变电站unit substation高压室H.T room低压室L.T room变压器室transformer room变压器平台transformer platform柴油发电机室diesel generator room控制室control room蓄电池室battery room维修间maintenance room值班室duty room休息室rest room电容器室condenser room充电室battery -- charging room室外储油罐outdoor oil tank地下油罐underground oil tank日用油箱day tank负荷load一类负荷first-class load二类负荷second-class load三类负荷third-class load照明负荷lighting load动力负荷power load电阻负荷resistance load电抗负荷reactive load冲击负荷shock load空载non -load有载on-load满载full -load过载over -load不平衡负荷unbalanced load平衡负荷balanced load额定负载nominal load负荷计算load circulation功率因数power factor同时使用系数diversity factor需要系数法demand factor method利用系数法utilization factor method二项式法binomial method无功功率补偿reactive power compensation自然功率因数natural power factor补偿后功率因数power factor after compensating 高压补偿compensating in H.T side低压补偿compensating in L.T side负荷率load rate补偿容量compensating capacity设备装设容量installed capacity备用容量standby capacity额定容量rated capacity视在容量apparent capacity计算容量calculated capacity短路容量short circuit capacity负荷计算表load calculation table电压voltage高压high tension (H.T)低压low tension (L.T)冲击电压impulse voltage临界电压critical voltage残余电压residual voltage击穿电压breakdown voltage供电电压supply voltage照明电压lighting voltage工作电压working voltage额定电压rated voltage相电压phase voltage线电压line voltage过压over--voltage欠压under--voltage电压降voltage drop电压损失voltage loss电压偏移voltage deviation电压波动voltage variation电压标准voltage standard电压等级voltage class电压调整率voltage regulation rate电流current交流alternating current (A.C)直流direct current (D.C)短路电流short--circuit短路点short circuit point三相短路电流three-phase short-circuit current 两相短路电流two-phase short-circuit current 单相短路电流single--phase short-circuit current 短路电阻short-circuit resistance短路电压short-circuit voltage短路电抗short-circuit reactance短路容量short-circuit capacity短路稳定性short-circuit stability短路冲击电流short-circuit impulse current热效应thermal effect稳定短路电流steady state short-circuit current切断电流cut-off current整定电流setting current动作电流action current额定电流rated current, nominal current熔体电流melt current熔丝电流fuse current故障电流fault current极限电流limiting current过电流over--current有效值virtual value, effective value电源，供电方式power and supply system工作电源working power source操作电源operating power source备用电源standby source应急电源emergency source常用电源normal source供电电压supply voltage双回路供电two-feeder supply两个独立电源two independent power supply放射式radial system单回路放射式one-circuit radial system双回路放射式two-circuit radial system有公用备用干线的放射式radial system with public standby main line树干式trunk system单回路树干式one-circuit trunk system单侧供电双回路树干式two-circuit trunk system with one-side power supply 双侧供电单回路树干式one-circuit trunk system with two-side power supply 双侧供电双回路树干式two-circuit trunk system with two-side power supply 环式ring system链式chain system变压器—干线式transformer-main line systemTN系统TN systemTN—S系统TN-S systemTN—C 系统TN-C systemTN—C—S系统TN-C-S systemTT 系统TT system单相二线制1-phase 2-wire system三相四线制3-phase 4-wire system三相五线制3-phase 5-wire system保护线protective earth (PE)中性线（N线）neutral分列运行independent operation并列运行parallel operation无载运行non-load operation变压器transformer三相变压器three-phase transformer油浸变压器oil-immersed transformer自冷变压器self-cooling transformer铜线变压器copper-coil transformer铝线变压器aluminum-coil transformer有载调压的变压器on-load regulating transformer可调变压器variable transformer全封闭的变压器fully-enclosed transformer干式变压器dry transformer单相变压器single-phase transformer防雷变压器lightning-proof transformer环氧浇注变压器epoxy-resin filled transformer电力变压器power transformer低损耗变压器low loss transformer照明变压器lighting transformer控制变压器control transformer三相油浸自冷式铝线低损耗有调压电力变压器3-phase oil-immersed self-cooling and low-loss aluminum-coil power transformer变压器系数transformer factor调压器voltage regulator稳压器stabilizer减压器reducer整流器rectifier限流器current limiter不停电电源uninterrupted power supply (UPS)变阻器rheostat电阻器resister自动功率调整器automatic power regulator电压互感器voltage transformer电流互感器current transformer降压变压器step-down transformer自动调压器automatic regulator高频变压器high-frequency transformer降压器step-down transformer升压器step-up transformer编号code型号type用途function二次接线图号secondary wiring drawing No.外形尺寸overall dimension一次主要设备preliminary main equipment辅助设备auxiliary equipment进线incoming line出线outgoing line规格specification数量quantity高压电器H.T equipment高压配电柜H.T distribution cabinet高压开关柜H.T switchgear手车式高压开关柜draw—out type H.T switchgear户内交流金属铠装移动式开关柜indoor A.C armored movable switchgear高压无功功率补偿装置H.T reactive power compensator高压静电电容器柜H.T electrostatic capacitor cabinet大功率并联电容无功功率补偿high power parallel capacitor reactive power compensating 高压断路器H.T circuit breaker少油断路器minimum oil circuit breaker油断路器oil circuit breaker真空断路器vacuum circuit breaker空气断路器air circuit breaker六氟化硫断路器sulfur hexaflouride breaker (SF6 breaker) 户内式indoor (type)户外式outdoor (type)电磁式electromagnetic产气式aerogenic高压接触器H.T contactor高压真空接触器H.T vacuum contactor高压负荷开关H.T load switch高压隔离开关H.T isolator操动机构control mechanism手动操动机构hand control mechanism电磁操动机构magnetic control mechanism弹簧储能操动机构(energy storing) spring operating mechanism 电动操动机构motor drived operating mechanism高压熔断器H.T fuse跌落式熔断器drop—out fuse高压电抗器H.T reactor串联电抗器series reactor高压互感器H.T transformer移相电容器phase—shift capacitor低压配电装置L.T distributor device低压配电屏L.T distribution panel低压无功功率补偿装置L.T reactive power compensator抽屉式低压配电屏drawable L.T distribution panel电动机控制中心motor control center (MCC)固定式低压配电屏fixed L.T distribution panel低压静电电容器屏L.T electrostatic capacitor panel出线屏outgoing panel进线屏incoming panel联络屏connection panel计量屏measurement panel动力馈电屏power feeder panel照明馈电屏lighting feeder panel控制柜control cabinet配电箱distribution cabinet总配电箱general distribution box动力配电箱power distribution box照明配电箱lighting distribution box插座箱socket box电度表箱kilowatt-hour meter box非标准控制箱，柜，台non-standard control box, cabinet, desk 电源切换箱power change-over box开关switch总开关master switch主开关main switch刀开关knife switch负荷开关load switch开启式开关open switch封闭式开关closed switch组合开关combination switch自动空气断路器automatic air breaker框架式skeleton type塑料外壳式断路器moulded case circuit breaker (MCCB)行程开关position switch微动开关microswitch万能转换开关universal switch分级转换开关stepping switch换相开关phase converter防爆开关explosion proof switch漏电保护开关leakage protection switch三向开关three—way switch轻载开关underload switch压力开关pressure switch单刀双掷开关single-pole double throw switch接触器contactor交流接触器 A.C contactor直流接触器 D.C contactor消弧接触器arc extinction contactor起动器starter电磁起动器electromagnetic starter磁力起动器magnetic starter自动空气式星三角起动器automatic air star-delta starter 减压起动器voltage reducing starter起动控制箱starting controler低压熔断器L.T fuse螺旋式熔断器screw fuse快速熔断器quick fuse瓷插式熔断器plug-in fuse继电器relay电流继电器current relay电压继电器voltage relay过电流继电器over-current relay信号继电器signal relay时间继电器timing relay中间继电器intermediate relay漏电继电器leakage relay欠压继电器under-voltage relay绝缘监视继合器insulation detection relay交流电度表 A.C kilowatt hour meter单相电度表single-phase kilowatt hour meter三相电度表three-phase kilowatt hour meter无功电度表reactive kilovolt ampere-hour meter无功功率表reactive power meter有功功率表active power meter电流表ammeter, current meter。