Power System Contingency Analysis电力系统静态安全分析

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。

第32卷第17期电网技术V ol. 32 No. 17 2008年9月Power System Technology Sep. 2008 文章编号：1000-3673（2008）17-0058-06 中图分类号：TM712 文献标志码：A 学科代码：470·4051N−1故障状态下电力系统静态电压稳定极限的快速计算赵柯宇，吴政球，刘杨华，连欣乐，曾兴嘉（湖南大学电气与信息工程学院，湖南省长沙市 410082）Rapid Calculation of Power System Static Voltage Stability Limit Under N-1 Fault Condition ZHAO Ke-yu，WU Zheng-qiu，LIU Yang-hua，LIAN Xin-le，ZENG Xing-jia （College of Electrical & Information Engineering，Hunan University，Changsha 410082，Hunan Province，China）ABSTRACT: To calculate the critical point of static voltage stability under faulty branch state of power system rapidly, a Taylor series based calculation approach is proposed. Taking admittance coefficients of branches as parameters and by means of solving the 1st to n-order derivatives of critical point of original system’s static voltage stability to admittance coefficient of faulty branch, the saddle node bifurcation (SNB) point can be approximated by Taylor series method, the exact solution of voltage stability critical point under N−1 fault condition can be solved rapidly. Using IEEE 30-bus system and IEEE 118-bus system for the cases, the proposed approach is verified. Verification results show that by use of the proposed approach the critical point of static voltage stability under N−1 fault condition can be obtained rapidly and accurately.KEY WORDS: power system；static voltage stability；saddle node bifurcation (SNB)；Newton method；fault analysis摘要：为了快速计算电力系统支路故障状态下的静态电压稳定临界点，提出了一种基于泰勒级数的计算方法。

电力系统定义与解析中文名称：电力系统英文名称：electric power system，power system 定义：由发电、变电、输电、配电和用电等环节组成的电能生产、传输、分配和消费的系统。

所属学科：电力（一级学科）；电力系统（二级学科）由发电、输电、变电、配电和用电等环节组成的电能生产与消费系统。

它的功能是将自然界的一次能源通过发电动力装置转化成电能，再经输电、变电和配电将电能供应到各用户。

为实现这一功能，电力系统在各个环节和不中文名称：电力系统英文名称：electric power system，power system 定义：由发电、变电、输电、配电和用电等环节组成的电能生产、传输、分配和消费的系统。

所属学科：电力（一级学科）；电力系统（二级学科）由发电、输电、变电、配电和用电等环节组成的电能生产与消费系统。

它的功能是将自然界的一次能源通过发电动力装置转化成电能，再经输电、变电和配电将电能供应到各用户。

为实现这一功能，电力系统在各个环节和不同层次还具有相应的信息与控制系统，对电能的生产过程进行测量、调节、控制、保护、通信和调度，以保证用户获得安全、经济、优质的电能。

英文：powersystem电力系统图由发电、变电、输电、配电和用电等环节组成的电能生产与消费系统。

它的功能是将自然界的一次能源通过发电动力装置（主要包括锅炉、汽轮机、发电机及电厂辅助生产系统等）转化成电能，再经输、变电系统及配电系统将电能供应到各负荷中心，通过各种设备再转换成动力、热、光等不同形式的能量，为地区经济和人民生活服务。

由于电源点与负荷中心多数处于不同地区，也无法大量储存，故其生产、输送、分配和消费都在同一时间内完成，并在同一地域内有机地组成一个整体，电能生产必须时刻保持与消费平衡。

因此，电能的集中开发与分散使用，以及电能的连续供应与负荷的随机变化，就制约了电力系统的结构和运行。

据此，电力系统要实现其功能，就需在各个环节和不同层次设置相应的信息与控制系统，以便对电能的生产和输运过程进行测量、调节、控制、保护、通信和调度，确保用户获得安全、经济、优质的电能。

abnormal overload 异常过载，事故过载active power 有功功率ampere-hour efficiency 充电效率aperiodic damping 非周期阻尼arithmetic circuitry 运算电路capacitive voltage transformer 电容式电压互感器closed electric circuit 闭合电路de-energizing circuit 去激电路，去励磁电路distribution network 配电网earthing arrangement 接地系统electrical phase angle 电相（位）角electronic transducer 电子式互感器end pressure 端部压力energy conversion factor 能量转换系数equivalent admittance 等效导纳equivalent generator 等效发电机equivalent parameter 等效参数，等值参数equivalent reactance 等效电抗，等值电抗equivalent resistance 等效电阻，等值电阻excitation characteristic 励磁特性extended uncertainty 扩展不确定度faulty line selection 故障选线Ferro resonance 铁磁谐振field inspection 现场检验fully energized 全激励，满励磁fundamental frequency 基本频率，基频high tension lead 高压引线insulation 绝缘interrupt mode 中断模式inverter 逆变器。

电力专业英语阅读与翻译第一课一、Summary of glossary 术语1.电力系统(electric) power systempower generation 发电transmission system(network) 输电系统(网络)distribution system 配电系统2.发电power generationpower plant 发电厂powerhouse 发电站hydropower plant 水力发电厂nuclear plant 核电厂thermal plant 热电厂fossil-power plant火电厂3.负荷分类load classificationindustrial loads 工业负荷residential loads 居民负荷commercial loads 商业负荷4.拓扑结构system topologyradial system 辐射状系统loop system 环状系统network system 网状系统二、Wording-buildingGeneral Introduction 专业英语词汇和构词方法简介专业词汇的形成主要有三种情况：1.借用日常英语词汇或其他学科的专业词汇，但是词义和词性可能发生了明显的变化。

例如：在日常英语中表示“力量、权力”和在机械专业表示“动力”的power，数学上表示“幂”，在电力专业领域可以仍作为名词，表示“电力、功率、电能”；也可以作为动词，表示“供以电能”。

在日常英语中表示“植物”的plant，在电力专业领域中用来表示“电厂”等。

2.由日常英语词汇或其他学科的专业词汇，直接合成新的词汇。

例如：over和head组合成overhead，表示“架空（输电线）”；super和conductor 合成superconductor，表示“超导体”等。

3.由基本词根和前缀或后缀组成新的词汇。

大部分专业词汇属于这种情况。

和电力系统相关的专业英语电力系统 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 AC直流 DC电网 power system落点 drop point开关站 switch station调节 regulation高抗 high voltage shunt reactor 并列的 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电磁场:Electromagnetic fields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 Electrotechnics电路原理 Principle of circuits电机学 Electrical Machinery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 Voltage within Power 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 Protection 主变压器 main transformer升压变压器 step-up transformer降压变压器 step-down transformer工作变压器 operating transformer备用变压器 standby transformer公用变压器 common transformer三相变压器 three-phase transformer单相变压器 single-phase transformer带负荷调压变压器 on-load regulating transformer变压器铁芯 transformer core变压器线圈 transformer coil变压器绕组 transformer winding变压器油箱 transformer oil tank变压器外壳 transformer casing变压器风扇 transformer fan变压器油枕transformer oil conservator(∽ drum变压器额定电压 transformer reted voltage变压器额定电流 transformer reted current变压器调压范围 transformer voltage regulation rage配电设备 power distribution equipment SF6断路器 SF6 circuit breaker开关 switch按钮 button隔离开关 isolator,disconnector真空开关 vacuum switch刀闸开关 knife-switch接地刀闸 earthing knife-switch电气设备 electrical equipment变流器 current converter电流互感器 current transformer电压互感器 voltage transformer电源 power source交流电源 AC power source直流电源 DC power source工作电源 operating source备用电源 Standby source强电 strong current弱电 weak current继电器 relay信号继电器 signal relay电流继电器 current relay电压继电器 voltage relay跳闸继电器 tripping relay合闸继电器 closing relay中间继电器 intermediate relay时间继电器 time relay零序电压继电器 zero-sequence voltage relay差动继电器 differential relay闭锁装置 locking device遥控 telecontrol遥信 telesignalisation遥测 telemetering遥调 teleregulation断路器 breaker,circuit breaker少油断路器 mini-oil breaker,oil-mini-mum breaker 高频滤波器 high-frequency filter组合滤波器 combined filter常开触点 normally opened contaact常闭触点 normally closed contaact并联电容 parallel capacitance保护接地 protective earthing熔断器 cutout,fusible cutout电缆 cable跳闸脉冲 tripping pulse合闸脉冲 closing pulse一次电压 primary voltage二次电压 secondary voltage并联电容器 parallel capacitor无功补偿器 reactive power compensation device消弧线圈 arc-suppressing coil母线 Bus,busbar三角接法 delta connection星形接法 Wye connection原理图 schematic diagram一次系统图 primary system diagram二次系统图 secondary system diagram两相短路 two-phase short circuit三相短路 three-phase short circuit单相接地短路 single-phase ground short circuit短路电流计算 calculation of short circuit current 自动重合闸 automatic reclosing高频保护 high-freqency protection距离保护 distance protection横差保护 transverse differential protection纵差保护 longitudinal differential protection线路保护 line protection过电压保护 over-voltage protection母差保护 bus differential protection瓦斯保护 Buchholtz protection变压器保护 transformer protection电动机保护 motor protection远方控制 remote control用电量 power consumption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 instantaneously over-current protection 跳闸线圈 trip coil工作线圈 operating coil制动线圈 retraint coil主保护 main protection后备保护 back-up protection定时限过电流保护 definite time over-current protection三段式电流保护 the current protection with three stages 反时限过电流保护 inverse time over-current protection 方向性电流保护 the directional current protection零序电流保护 zero-sequence current protection阻抗 impedance微机保护 Microprocessor Protection。

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空载消耗 no-load loss铁损 iron loss铜损 copper loss空载电流 no-load current有功消耗 active loss无功消耗 reactive 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功角稳固 angle stability稳固 stability电压稳固 voltage stability暂态稳固 transient stability电厂 power plant能量输送 power transfer沟通 AC直流 DC电网 power system落点 drop point开关站 switch station调理 regulation高抗 high voltage shunt reactor 并列的 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)动向 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参照值 reference value电压互感器 PT分接头 tap仿真剖析 simulation analysis降落率 droop rate传达函数 transfer function框图 block diagram受端 receive-side同步 synchronization保护断路器 circuit breaker摇晃 swing阻尼 damping无刷直流电机 Brusless DC motor刀闸 ( 隔走开关 ) 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 固定串连电容赔偿fixed series capacitor compensation双回同杆并架 double-circuit lines on the same tower 单机无量大系统one machine - infinity bus system励磁电流 Magnetizing current赔偿度 degree of compensation电磁场 :Electromagnetic fields失掉同步 loss of synchronization装机容量 installed capacity无功赔偿 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<降落特征 droop characteristics线路赔偿器 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 Electrotechnics电路原理 Principle of circuits电机学 Electrical Machinery电力系统稳态剖析Steady-StateAnalysis 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 ofElectrical System's Relay Protection电力系统元件保护原理ProtectionPrinciple of Power System 's Element电力系统内部过电压Past Voltagewithin Power system模拟电子技术基础Basis ofAnalogue Electronic Technique数字电子技术DigitalElectrical Technique电路原理实验Lab. ofprinciple of circuits电气工程讲座Lectures onelectrical power production电力电子基础Basic fundamentals of power electronics高电压工程High voltageengineering电子专题实践Topics onexperimental project of electronics电气工程概论Introductionto electrical engineering电子电机集成系统Electronicmachine system电力传动与控制ElectricalDrive and Control电力系统继电保护Power SystemRelaying Protection主变压器main transformer升压变压器step-up transformer降压变压器step-down transformer工作变压器operating transformer备用变压器standby transformer公用变压器common transformer三相变压器three-phase transformer单相变压器single-phase transformer带负荷调压变压器on-load regulating transformer 变压器铁芯transformer core变压器线圈transformer coil变压器绕组transformer winding变压器油箱transformer oil tank变压器外壳transformer casing变压器电扇transformer fan变压器油枕transformer oil conservator(∽ drum 变压器额定电压transformer reted voltage变压器额定电流transformer reted current变压器调压范围transformer voltage regulation rage配电设施power distribution equipmentSF6 断路器SF6 circuit breakerswitch按钮button隔走开关isolator,disconnector 真空开关vacuum switch刀闸开关knife-switch接地刀闸earthing knife-switch 电气设施electrical equipment 变流器current converter电流互感器current transformer 电压互感器voltage transformerpower source沟通电源AC power source 直流电源DC power source 工作电源operating source 备用电源Standby source 强电strong current弱电weak current继电器relay信号继电器signal relay电流继电器current relay电压继电器voltage relay跳闸继电器tripping relay合闸继电器closing relay中间继电器intermediate relay时间继电器time relay零序电压继电器zero-sequence voltage relay 差动继电器differential relay闭锁装置locking device遥控telecontrol遥信telesignalisationtelemetering遥调teleregulation断路器breaker,circuit breaker少油断路器mini-oil breaker,oil-mini-mum breaker 高频滤波器high-frequency filter组合滤波器combined filter常开触点normally opened contaact常闭触点normally closed contaact并联电容parallel capacitance保护接地protective earthingcutout,fusible cutout电缆cable跳闸脉冲tripping pulse合闸脉冲closing pulse一次电压primary voltage二次电压secondary voltage并联电容器parallel capacitor无功赔偿器reactive power compensation device 消弧线圈arc-suppressing coil母线Bus,busbardelta connection星形接法Wye connection原理图schematic diagram一次系统图primary system diagram二次系统图secondary system diagram两相短路two-phase short circuit三相短路three-phase short circuit单相接地短路single-phase ground short circuit 短路电流计算calculation of short circuit current 自动重合闸automatic reclosinghigh-freqency protection距离保护distance protection横差保护transverse differential protection 纵差保护longitudinal differential protection 线路保护line protection过电压保护over-voltage protection母差保护bus differential protection瓦斯保护Buchholtz protection变压器保护transformer protection电动机保护motor protectionremote control用电量power consumption载波carrier故障fault选择性selectivity速动性speed敏捷性sensitivity靠谱性reliability电磁型继电器electromagnetic无时限电流速断保护instantaneously over-current protectiontrip coil工作线圈operating coil制动线圈retraint coil主保护main protection后备保护back-up protection准时限过电流保护definite time over-current protection三段式电流保护the current protection with three stages 反时限过电流保护inverse time over-current protection方向性电流保护the directional current protection零序电流保护zero-sequence current protection阻抗impedance微机保护Microprocessor Protection。