发电机组专业术语库.docx

1、发电机组专业术语库专业术语库按英文查询，请点击相应术语的开头字母：A B C D E F G H I J K L M N O P Q R S T U V W X Y Z按中文查询，请按Ctrl+F键。 AC Alternating Current (AC) is electric current that alternates between a positive maximum value and a negative maximum value at a characteristic frequency, usually 50 or 60 cycles per second (Hertz)

2、. 交流 交流是指电流在正负最大值之间以特定的频率变动，通常频率为50或60赫兹。 ANSI American National Standards Institute. 美国国家标准协会 美国国家标准协会 Acoustic Material Acoustic material is any material considered in terms of its acoustic properties, especially its properties of absorbing or deadening sound. 声音材料 声音材料，特指有吸音或隔音特性的材料。 Active Power

3、 Active power is the real power (kW) supplied by the generator set to the electrical load. Active power creates a load on the generator sets engine and is limited by the horsepower of the engine. Active power does the work of heating, turning motor shafts, etc. 有功功率 有功功率（kW），是指发电机组实际供应给负载的功率，它由发电机组的

4、发动机提供，受到发动机马力大小的限制。发热和驱动马达转动靠有功功率完成。 Air Circuit Breaker An air circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker. Air is the medium of electrical insulation between electrically live parts and grounded (earthed) metal par

5、ts. 空气线路断路器 空气线路断路器的功能是当电流大小超过断路器的过流跳脱设定值后自动断开。空气是带电零件和接地金属零件之间的绝缘介质。 Alternator Alternator is another term for AC generator. 交流发电机 交流发电机 Amortisseur Windings The amortisseur windings of a synchronous AC generator are the conductors embedded in the pole faces of the rotor. They are connected togethe

6、r at both ends of the poles by end rings or end plates. Their function is to dampen waveform distortion during load changes. 阻尼线圈 同步交流发电机的阻尼线圈是指嵌绕在转子磁极间的导线，他们分别在两极用端环或端板相连接，主要功能是减弱因负载变化而引起的波形畸变。 Ampacity Ampacity is the safe current-carrying capacity of an electrical conductor in amperes as defined

7、by code. 载流容量 载流容量是以安培数来定义导线安全载流能力。 Ampere The ampere is a unit of electric current flow. One ampere of current will flow when a potential of one volt is applied across a resistance of one ohm. 安培 安培是电流单位。1伏电压作用于1欧姆的电阻上就会产生1安培的电流。 Annunciator An annunciator is an accessory device used to give remote

8、 indication of the status of an operating component in a system. Annunciators are typically used in applications where the equipment monitored is not located in a portion of the facility that is normally attended. The NFPA has specific requirements for remote annunciators used in some applications,

9、such as hospitals. 指示器 指示器作为一个附属装置常用于远程显示系统的各个组成部分的运行状态。指示器通常使用在监测设备不在设备现场的应用。美国国家防火协会对指示器在某些行业的应用有特殊要求，例如医院等。 Apparent Power Apparent power is the product of current and voltage, expressed as kVA. It is real power (kW) divided by the power factor (PF). 视在功率 视在功率是电流和电压共同作用的产物，用kVA表示。它等于有功功率（kW）除以功率因

10、数。 Armature The armature of an AC generator is the assembly of windings and metal core laminations in which the output voltage is induced. It is the stationary part (stator) in a revolving-field generator. 电枢 交流发电机电枢的是金属芯和绕组的总成，产生感应电压。电枢是旋转磁场交流发电机的不动部分（定子）。 Backup Protection Backup protection consis

11、ts of protective devices, which are intended to operate only after other protective devices have failed to operate or detect a fault. 后备保护装置 后备保护装置是在其他保护装置动作失败或发生故障时动作的保护装置。 Bandwidth The amount of data that can be transmitted in a fixed amount of time. For digital devices, it is expressed as bits p

12、er second, or bytes per second. For analog devices, it is usually expressed as cycles per second, or Hertz. 带宽 在固定时间内可传输的数据量。在数字化设备中以位/秒或字秒表示，在模拟（数字）设备中以周/秒或者赫兹表示。 Base Load Base load is that portion of a building load demand which is constant. It is the base of the building demand curve. 基本负荷 基本负荷是

13、指建筑负荷需求量中不变的那一部分， 是构成负荷需求曲线的基数。 Baud Rate The speed of data transmission in serial data communications approximately equal to the number of code elements (bits) per second (BPS). Bits per second are also termed BPS, with the prefix (k) denoting thousands. 波特率 串行数据传输速率，约等于每秒钟传输的比特数。比特/秒也可以用BPS表示，kBPS

14、表示千比特/秒。 Binding The process of making the logical connections to the network (also called connecting). This involves connecting network variable outputs to network variable inputs using LonWorks software. 绑定 与网络进行逻辑连接的过程（也可以叫做连接），包括把输出变量与输入变量用LonWorks软件绑定。 Bit Binary Digit. 位 2进制数字 Black Start Blac

15、k Start refers to the starting of a power system with its own power sources, without the assistance from external power supplies. 黑启动 黑启动是指依靠系统内部的电源，而不借助外部的电力进行的启动。 Boolean A logical system used to express one of two states, such as on or off (yes or no, 1 or 0, etc.) 布尔类型 用于表示2种状态之一的逻辑系统，例如开或关（是或否，

16、1或0等）。 Bus Capacity Bus capacity is the maximum load that can be carried on a system without causing degradation of the generator frequency to less than a prescribed level (usually 59 Hz in a 60 Hz system). 母排容量 母排容量是指在发电机频率不被压低的情况下，系统所能带动的最大负载。 CT (Current Transformer) Current transformers are inst

17、rument transformers used in conjunction with ammeters, control circuits and protective relaying. They usually have 5 ampere secondaries. 电流互感器 电流互感器是一种仪表变压器，通常与电流表、控制电路、保护继电器配套使用。 Circuit A circuit is a path for an electric current across a potential (voltage). 电路 电路是电流通过电势（电压）的路径。 Circuit Breaker A

18、 circuit breaker is a protective device that automatically interrupts the current flowing through it when that current exceeds a certain value for a specified period of time. See Air Circuit Breaker, Main Breaker, Molded Case Circuit Breaker and Power Circuit Breaker. 线路断路器 线路断路器是一个保护装置，当通过它的电流超过某个安

19、全设定值一定时间后，它就能够自动切断电流。（见空气线路断路器、主开关、塑壳线路断路器等）。 Circulating Harmonic Currents Circulating Harmonic Currents are currents that flow because of differences in voltage waveforms between paralleled power sources, or induced by operation of non-linear loads. 谐波环流 谐波环流是由并联电源间不同的电压波形或者非线性负荷运转而产生的电流。 Continuo

20、us Load A continuous load is a load where the maximum current is expected to continue for three hours or more (as defined by the NEC for design calculations). 持续负荷 持续负荷是指使电流在3个小时或更长时间（根据NEC的定义）内需保持最大值的负荷。 Current Current is the flow of electric charge. Its unit of measure is the ampere. 电流 电流是电荷的流动，

21、以安培为单位。 Cycle A cycle is one complete reversal of an alternating current or voltage from zero to a positive maximum to zero again and then from zero to a negative maximum to zero again. The number of cycles per second is the frequency. 周期 周期是指交流电流或电压从零到正最大值再到零，然后从零到负最大值再到零这样一个往复的过程；而频率则是指每秒可完成的周期数。

22、Dead Bus Dead Bus refers to the de-energized state of the power connections between outputs of paralleled generator sets. The term bus in this usage can either be rigid solid bus bars or insulated flexible cables. 不带电母排 不带电母排是指连接并联发电机组输出之间的电力连接处于不带电状态。这里所指的母排可能是坚硬的实心汇流条，也可能是柔韧的绝缘电缆。 Delta Connection

23、 Delta connection refers to a three phase connection in which the start of each phase is connected to the end of the next phase, forming the triangle-shaped Greek letter Delta. The load lines are connected to the corners of the triangle. 三角形连接 三角形连接是指在三相连接中，相临两相首尾相连，构成三角形的希腊字母Delta，负荷线连接在三角形的角上。 Dif

24、ferential Relay A differential relay is a protective device that is fed by current transformers located at two different series points in the electrical system. The differential relay compares the currents and picks up when there is a difference in the two, which signifies a fault in the zone of pro

25、tection. These devices are typically used to protect windings in generators or transformers. 差动继电器 作为保护装置，差动继电器由位于系统中两个不同位置的电流互感器提供反馈信息。差动继电器对电流进行比较，如果存在不同则表示受保护区域内有故障存在。这些装置常被用于保护发电机或变压器的线圈。 Digital Master Control (DMC) This device is designed to control the power systems in a facility. It is offer

26、ed as an option on Cummins switchgear. 数字主控制器 数字主控制器是用于控制设备电力系统的装置。在康明斯开关柜中数字主控制器是选配件。 Direct Current (DC) Direct current is current with no reversals in polarity. 直流 直流是指没有正负极性往复变化的电流。 Distributed Control System A collection of nodes that interact to control a system whose components are spread out

27、 over some distance. Each node has intelligence for operating its own particular component of the system. Different parts of the system communicate status and control information with one another to form a distributed control system. Typically, they communicate on a peer-to-peer level. This is diffe

28、rent from a type of system where all control and interaction between components is dictated by one central control. This is a common master/slave arrangement. 分布式控制系统 分布式控制系统是由分布在不同位置但互相作用的节点构成。每个节点具有智能，可以对各自系统操作控制。系统不同部分之间的通信状态和控制信息交流构成了分布式控制系统，这种系统内的通信是点对点方式，有别于所有的控制以及组成部分之间的通信都由一个中央控制器完成的系统。 Dist

29、ribution Circuit Breaker A distribution circuit breaker is a device used for overload and short current protection of loads connected to a main distribution device. 配电线路开关 配电线路开关是给连接在主配电设备上的负荷提供过载和短路保护的装置。 Droop Load Sharing Droop load sharing is a method of making two or more parallel generator set

30、s share a system kW load. This is accomplished by having each governor control adjusted so that the sets have the same droop (reduction of speed). Typical droop is two cycles in frequency from no load to full load. 转速降负荷分配 转速降负荷分配是两台或多台机组负荷分配的一种方法。这通过每台并联机组调速器具备相同的转速降。从空载到满载转速降一般为两赫兹。 Efficiency (EF

31、F) Efficiency is the ratio of energy output to energy input, such as the ratio between the electrical energy input to a motor and the mechanical energy output at the shaft of the motor. 效率 效率是输出能量与输入能量的比率，例如输入到电动机的电能与电机轴承输出的机械能的之间的比率。 Emergency System An emergency system is independent power generat

32、ion equipment that is legally required to feed equipment or systems whose failure may present a life safety hazard to persons or property. 应急系统 应急系统是指根据相关法规要求，为那些可能会危及生命安全或造成财产重大损失的设备或系统提供电源的独立发电设备。 Energy Energy is manifest in forms such as electricity, heat, light and the capacity to do work. It is convertible from one form to another, suc