电力系统外文英语文献资料

Electric Power System

Electrical power system refers to remove power and electric parts of the part,It includes substation, power station and distribution. The role of the power grid is connected power plants and users and with the minimum transmission and distribution network disturbance through transport power, with the highest efficiency and possibility will voltage and frequency of the power transmission to the user fixed .Grid can be divided into several levels based on the operating voltage transmission system, substructure, transmission system and distribution system, the highest level of voltage transmission system is ZhuWangJia or considered the high power grids. From the two aspects of function and operation, power can be roughly divided into two parts, the transmission system and substation. The farthest from the maximum output power and the power of the highest voltage grade usually through line to load. Secondary transmission usually refers to the transmission and distribution system is that part of the middle. If a plant is located in or near the load, it might have no power. It will be direct access to secondary transmission and distribution system. Secondary transmission system voltage grade transmission and distribution system between voltage level. Some systems only single second transmission voltage, but usually more than one. Distribution system is part of the power system and its retail service to users, commercial users and residents of some small industrial users. It is to maintain and in the correct voltage power to users responsible. In most of the system, Distribution system accounts for 35% of the total investment system President to 45%, and total loss of system of the half .

More than 220kv voltage are usually referred to as Ultra high pressure, over 800kv called high pressure, ultra high voltage and high pressure have important advantages, For example, each route high capacity, reduce the power needed for the number of transmission. In as high voltage to transmission in order to save a conductor material seem desirable, however, must be aware that high voltage transmission can lead to transformer, switch equipment and other instruments of spending increases, so, for the voltage transmission to have certain restriction, allows it to specific circumstances in economic use. Although at present, power transmission most is through the exchange of HVDC transmission, and the growing interest in, mercury arc rectifier and brake flow pipe into the ac power generation and distribution that change for the high voltage dc transmission possible.

Compared with the high-voltage dc high-voltage ac transmission has the following some advantages: (1) the communication with high energy; (2) substation of simple maintenance and communication cost is low; (3) ac voltage can easily and effectively raise or lower, it makes the power transmission and high pressure With safety voltage distribution

HVDC transmission and high-voltage ac transmission has the following advantages: (1) it only need two phase conductors and ac transmission to three-phase conductors; (2) in the dc transmission impedance, no RongKang, phase shift and impact overvoltage; (3) due to the same load impedance, no dc voltage, and transfer of the transmission line voltage drop less communication lines, and for this reason dc transmission line voltage regulator has better properties; (4) in dc system without skin effect. Therefore, the entire section of route conductors are using; (5) for the same work, dc voltage potential stress than insulation. Therefore dc Wire need less insulation; (6) dc transmission line loss, corona to little interference lines of communication; (7) HVDC transmission without loss of dielectric, especially in cable transmission; (8) in dc system without stability and synchronization of trouble.

A transmission and the second transmission lines terminated in substation or distribution substations, the substation and distribution substations, the equipment including power and instrument transformer and lightning arrester, with circuit breaker, isolating switch, capacitor set, bus and a substation control equipment, with relays for the control room of the equipment. Some of the equipment may include more transformer substations and some less, depending on their role in the operation. Some of the substation is manual and other is automatic. Power distribution system through the distribution substations. Some of them by many large capacity transformer feeders, large area to other minor power transformer capacity, only a near load control, sometimes only a doubly-fed wire feeders (single single variable substation)

Now for economic concerns, three-phase three-wire type communication network is widely used, however, the power distribution, four lines using three-phase ac networks.

Coal-fired power means of main power generating drive generators, if coal energy is used to produce is pushing the impeller, then generate steam force is called the fire. Use coal produces steam to promote the rotating impeller machine plant called coal-fired power plants. In the combustion process, the energy stored in the coal to heat released,

then the energy can be transformed into the form within vapor. Steam into the impeller machine work transformed into electrical energy.

Coal-fired power plants could fuel coal, oil and natural gas is. In coal-fired power plant, coal and coal into small pieces first through the break fast, and then put out. The coal conveyer from coal unloader point to crush, then break from coal, coal room to pile and thence to power. In most installations, according to the needs of coal is, Smash the coal storage place, no coal is through the adjustable coal to supply coal, the broken pieces of coal is according to the load changes to control needs. Through the broken into the chamber, the coal dust was in the second wind need enough air to ensure coal burning.

In function, impeller machine is used to high temperature and high pressure steam energy into kinetic energy through the rotation, spin and convert electricity generator. Steam through and through a series of impeller machine parts, each of which consists of a set of stable blade, called the pipe mouth parts, even in the rotor blades of mobile Li called. In the mouth parts (channel by tube nozzle, the steam is accelerating formation) to high speed, and the fight in Li kinetic energy is transformed into the shaft. In fact, most of the steam generator is used for air is, there is spread into depression, steam turbine of low-pressure steam from the coagulation turbine, steam into the condenses into water, and finally the condensate water is to implement and circulation.

In order to continuous cycle, these must be uninterrupted supply: (1) fuel; (2) the air (oxygen) to the fuel gas burning in the configuration is a must; (3) and condenser, condensed from the condensed water supply, sea and river to lake. Common cooling tower; (4) since water vapour in some places in circulation, will damage process of plenty Clean the supply.

The steam power plant auxiliary system is running. For a thermal power plant, the main auxiliary system including water system, burning gas and exhaust systems, condensation system and fuel system. The main auxiliary system running in the water pump, condensation and booster pump, coal-fired power plants in the mill equipment. Other power plant auxiliary equipment including air compressors, water and cooling water system, lighting and heating systems, coal processing system. Auxiliary equipment operation is driven by motor, use some big output by mechanical drive pump and some of the impeller blades, machine drive out from the main use of water vapor

impeller machine. In coal-fired power plant auxiliary equipment, water supply pump and induced draft fan is the biggest need horsepower.

Most of the auxiliary power generating unit volume increased significantly in recent years, the reason is required to reduce environment pollution equipment. Air quality control equipment, such as electrostatic precipitator, dust collection of flue gas desulfurization, often used in dust in the new coal-fired power plants, and in many already built in power plant, the natural drive or mechanical drive, fountain, cooling tower in a lake or cooling canal has been applied in coal-fired power plants and plants, where the heat release need to assist cooling system.

In coal-fired power stations, some device is used to increase the thermal energy, they are (1) economizer and air preheater, they can reduce the heat loss; (2) water heater, he can increase the temperature of water into boiling water heaters; (3) they can increase and filter the thermal impeller.

Coal-fired power plants usually requires a lot of coal and coal reservoirs, however the fuel system in power plant fuel handling equipment is very simple, and almost no fuel oil plants.

The gas turbine power plants use gas turbine, where work is burning gas fluid. Although the gas turbine must burn more expensive oil or gas, but their low cost and time is short, and can quickly start, they are very applicable load power plant. The gas turbine burn gas can achieve 538 degrees Celsius in the condensing turbine, however, the temperature is lower, if gas turbine and condenser machine, can produce high thermal efficiency. In gas turbine turbine a combined cycle power plant. The gas through a gas turbine, steam generator heat recovery in there were used to generate vapor heat consumption. Water vapor and then through a heated turbine. Usually a steam turbine, and one to four gas turbine power plant, it must be rated output power.

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电气英语证书考试(PEC)-电力系统常用英语词汇 (coaxial) cable (同轴)电缆 ac motor 交流环电动机 AC transmission system 交流输电系统 active filter 有源滤波器 Active power 有功功率 aging 老化 air-gap flux 气隙磁通 air-gap line 气隙磁化线 alloy 合金 alternating current 交流电 ammeter 电流表 amplidyne 微场扩流发电机 amplitude modulation (AM) 调幅 Amplitude Modulation(AM 调幅 analytical 解析的 anode (cathode) 阳极(阴极) arc discharge 电弧放电 Arc reignition 电弧重燃 Arc suppression coil 消弧线圈 arc-extinguishing chamber 灭弧室 armature circuit 电枢电路 Armature 电枢 Armature 电枢 asynchronous machine 异步电机 attachment coefficient 附着系数 attenuate 衰减 attenuation factor 衰减系数 Automatic control 自动控制 Automatic meter reading 自动抄表 Automatic oscillograph 自动录波仪 automatic Voltage regulator(A VR)自动电压调整器 Autotransformer 自耦变压器 Autotransformer 自藕变压器 baghouse 集尘室 bandwidth 带宽 Bare conductor 裸导线 binary 二进制 Blackout 断电、停电 block diagram 方框图 Boiler 锅炉

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英语论文参考文献精选3篇 英语论文参考文献精选1篇 英文及其它语种的文献在前，中文文献在后，参照以下标准执行。 期刊论文 Bolinger, D. 1965. The atomization of word meaning [J]. Language 41 (4): 555-573. 朱永生，2006，名词化、动词化与语法隐喻[J]，《外语教学与研究》(2)：83-90。 论文集论文 Bybee, J. 1994. The grammaticization of zero: Asymmetries in tense and aspect systems [A]. In W. Pagliuca (ed.). Perspectives on Grammaticalization [C]. Amsterdam: John Benjamins. 235-254. 文秋芳，2003a，英语学习者动机、观念、策略的变化规律与特点 [A]。载文秋芳、王立非(编)，《英语学习策略实证研究》[C]。西安：陕西师范大学出版社。255-259。 网上文献 Jiang, Yan. 2000. The Tao of verbal communication: An Elementary textbook on pragmatics and discourse analysis [OL]. (accessed 30/04/2006). 王岳川，2004，当代传媒中的网络文化与电视批评[OL]， (2005年11月18日读取)。 专著 Bloomfield, L. 1933. Language [M]. New York: Holt. 吕叔湘、朱德熙，1952，《语法修辞讲话》[M]。北京：中国青年出版社。 译著 Nedjalkov, V. P. (ed.). 1983/1988. Typology of Resultative Constructions, trans. Bernard Comrie [C]. Amsterdam: John Benjamins. 赵元任，1968/1980，《中国话的文法》(A Grammar of Spoken Chinese)[M]，丁邦新译。英语论文参考文献精选3篇英语论文参考文献精选3篇。香港：香港中文大学出版社。 编著/论文集

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文学批评理论的选题一般不太适合英语专业本科生，因为该理论知识的学习在英语专业研究生阶段，本科生一般不具备文学批评理论的知识结构。这个方向的选题可以有关某一文学批评理论,一文学批评术语的阐释或某两种或以上的文学批评理论的比较。 比较文学研究就是将两个以上的作家或作品进行比较。这两个作品或作家可以是同一国别的(如“雪莱与拜伦的诗歌比较”)，也可以是不同国别的(如《牡丹亭》与《罗密欧与朱丽叶》) 2.语言学：选择语言学的毕业论文选题可以在两个大的方向进行：普通语言学和应用语言学。 普通语言学的研究就是对于英语语言的任何一个方面的研究，如对一种词性、或一种时态、或拼写、语调等等方面的研究(如“一般现在时及其交际功能”)。 应用语言学包括教学法的研究和其它一些新兴的应用语言学分支的研究。师范专业或本身从事教师职业的学生选择教学法方向的较多。在这个方向选题，也要避免过大范围的选题，而应对一个具体问题进行研究，最重要的是要结合教学实践或实验。这个方向的好的选题有：“个性与英语教学”，“方言对英语学习的影响”等。

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power output 功率输出，输出功率 power output 功率输出，输出功率 short circuit a great deal 大量 ac 交流(电) admittance 导纳 amp 安培 amp 安培 amplitude振幅 arc 电弧，弧光 arise from 起于,由...出身 armature 电枢 armature winding 电枢绕组 arrangement 布置，排列；设备，装置；安装，装配；置配；安排 arrangement 布置，排列；安装，装配； assemblage 与会者(集合称), 集合, 集会, 装配 assume 假定, 设想, 采取, 呈现 automatic voltage regulator 自动电压调节器，自动稳压器，自动调压器autotransformer 自耦变压器 backup protection 后备保护，后备保护装置 block 组[件]，单元，部件；机组，单元机组；滑轮；字组，块，程序块，数据块break down 毁掉, 制服, 压倒, 停顿, 倒塌, 中止, 垮掉, 分解 bus bar 汇流条, 母线 bus impedance matrix 母线阻抗矩阵，节点阻抗矩阵 bus impedance matrix 母线阻抗矩阵，节点阻抗矩阵 busbar 母线，汇流条，结点，节点，汇流排 bushing [电工]套管 capacitor bank 电容器组 carrier protection 载波保护，高频保护 carrier relaying 载波继电保护，高频保护，载波中继[制] carry 携带，搬运，传送，传播；支持，执行，进位，进列 changing 转换 charging currents 充电电流 circuit breaker [电工]断路开关, 断路器 Circuit breaker 电路断路器 circuit layout 电路布线，线路布置 circuit-breaker 〈电〉断路器，断路开关 circuit-breaker 〈电〉断路器，断路开关 clearing time 通信连络断开时间, 电话的话终时间 clearing time 通信连络断开时间, 电话的话终时间 combine with 与...结合 come into 得到 communication circuit 通讯电路 conductance [电工]电导, 导率, 电导系数

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