有關電力系統(tǒng)自動化中英文翻譯資料

1、外文資料翻譯power system automation power system integration is the act of communication data to, or among ied s in the i&c system and remote users. substation integration refers to combining data from the ieds local to a substation so that there is a single point of contact in the substation for all of t

2、he i&c data. poletop devices often communicate to the substation via wireless or fiber connections. remote and local substation and feeder control is passed through the substation controller acting as a single point of contact. some systems bypass the substation controller by using direct connection

3、s to the poletop devices, such as rtu s, protective relays, and controllers. power system automation is the act of automatically controlling the power system via i&c devices. substation automation refers to using ied data, control and automation capabilities within the substation, and control comman

4、ds from remote users to control power system devices. since true substation automation relies on substation integration, the terms are often used interchangeably. power system automation includes processes associated with generation and delivery of power. a subset of the process deal with delivery o

5、f power at transmission and distribution levels, which is power delivery automation. together, monitoring and control of power delivery system in the substation and on the poletop reduce the occurrence of outages and shorten the duration of outages that do occur. the ieds, communications protocols,

6、and communications methods described in previous sections, work together as a system to perform power system automation. though each utility is unique, most consider power delivery automation of transmission and distribution substation and feeders to include : supervisory control and data acquisitio

7、n(scada)-operator supervision and control; distribution automation-fault location, auto-isolation, auto-sectionalizing, and auto-restoration; substation automation-breaker failure, reclosing, battery monitoring, dead substation transfer, and substation load transfer; energy management system (ems)-l

8、oad flow, var and voltage monitoring and control, generation control, transformer and feeder load balancing; fault analysis and device maintenance.system without automated control still have the advantages of remote monitoring and operator control of power system devices, which includes: remote moni

9、toring and control of circuit breakers and automated switches; remote monitoring of non-automated switches and fuses; remote monitoring and control of capacitor banks; remote monitoring and voltage control; remote power quality monitoring and control. ied s described in the overview are used to perf

10、orm power system integration and automation. most designs require that the one ied act as the substation controller and perform data acquisition and control of the other ied s. the substation controllers is often called upon to support system automation tasks as well. the communications industry use

11、s the term client/server for a device that acts as a master, or client, retrieving data from some devices and then acts as a slaver, a server, sending this data to other devices. the client/server collecting and concentrating dynamically. a data concentrator creates a substation databases by collect

12、ing and concentrating dynamic data from several devices. in this fashion, essential subsets of data from each ied are forwarded to a master through one data transfer. the concentrator databases is used to pass data between ied s that are not directly connected. a substation archive client/server col

13、lects and archives data from several devices. the archive data is retrieved when it is convenient for the user to do so. the age of the ied s now in substations varies widely. many of these ied s are still useful but lack the most recent protocols. a communications processor that can communicate wit

14、h each ied via a unique baud rate and protocol extends the time that each ied is useful. using a communications processor for substation integration also easily accommodates future ied s. it is rare for all existing ied s to be discarded during a substation integration upgrade project. the benefits

15、of monitoring, remote control, and automation of power delivery include improved employee and public safety, and deferment of the cost of purchasing new equipment. also, reduced operation and maintenance costs are realized through improved use of existing facilities and optimized performance of the

16、power system through reduced losses associated with outages and improved voltage profile. collection of information can result in better planning and system design, and increased customer satisfaction will result from improved responsiveness, service reliability, and power quality. power system auto

17、mation includes a variety of equipment. the principal items are listed and briefly described below. instrument transformers are used to sense power system current and voltage. they are physically connected to power system apparatus and convert the actual power system signals, which includes high vol

18、tage and current magnitudes, down to lower signal levels. transducers convert the analog output of an instrument transformer from one magnitude to another or from one value type to another, such as from an ac current to dc voltage. as the name implies, a remote terminal device, rtu, is an ied that c

19、an be installed in a remote location, and acts as a termination point for filed contacts. a dedicated pair of copper conductors are used to sense every contract and transducer value. these conductors originated at the power system device, are installed in trenches or overhead cable trays, and are th

20、en terminated on panels within the rtu. the rtu can transfer collected data to other devices and receive data and control commands from other device through a serial port. user programmable rtus are referred to as “smart rtus.” a communication switch is a device that switches between several serial

21、ports when it is told to do so. the remote user initiates communications with the port switch via a connection to the substation , typically a leased line or dial-up telephone connection. once connected, the user can route their communication through the port switch to one of the connected substatio

22、n ieds. the port switch merely “passes through” the ied communication. a meter is an ied that is used to create accurate measurement of power system current, voltage, and power values. metering values such as demand and peak are saved within the meter to create historical information about the activ

23、ity of the power system. a digital fault recorder ,is an ied that records information about power system disturbances. it is capable of storing data in digital format when triggered by conditions detected on the power system. harmonics, frequency, and voltage are examples of data captured by dfrs. l

24、oad tap changer are devices used to change the tap position on transformers. these devices work automatically or can be controlled via another local ied or form a remote operator or process. recloser controllers remotely control the operation of automated reclosers and switches. these devices monito

25、r and store power system conditions and determine when to perform control actions. they also accept commands form a remote operator or process. 電力系統(tǒng)自動化電力系統(tǒng)集成是在i&c系統(tǒng)中的ied和遠程用戶之間進行數(shù)據(jù)通信的操作。變電站集成指的是將局部和整個變電站的ied數(shù)據(jù)進行合成，對于變電站內(nèi)所有i&c數(shù)據(jù)，只有一個單一聯(lián)系點。桿頂設備通常通過無線或光纖連接與變電站進行通信。遠程、本地變電站和饋線控制像單一聯(lián)系點一樣通過變電站控制器。一些系統(tǒng)用直接連

26、接與rtu，保護繼電器和控制器等桿頂設備進行旁路連接。電力系統(tǒng)自動化是通過i&c設備自動控制電力系統(tǒng)的行為。變電站自動化指的是使用ied數(shù)據(jù)、變電站內(nèi)部的調節(jié)和自動控制能力和來自遠程用戶的控制命令去控制電力系統(tǒng)設備。由于真正的變電站自動化依賴于變電站集成，這兩個術語通?；ビ?。電力系統(tǒng)自動化涵蓋電力生產(chǎn)和發(fā)送的各個環(huán)節(jié)。其中一些環(huán)節(jié)涉及電力傳輸和分配的各個級別，即電力輸送自動化。對于變電站和桿頂電力輸送系統(tǒng)的監(jiān)控能減少斷電的發(fā)生，縮短斷電時間。ied、通信協(xié)議和前面描述的通信方法作為一個系統(tǒng)協(xié)同工作，實現(xiàn)電力系統(tǒng)自動化。盡管各個公共部門不同，但大多數(shù)認為電力輸送自動化，配電變電站和饋電線路應包括

27、：監(jiān)控和數(shù)據(jù)采集操作員監(jiān)視和控制，配電自動化故障定位，自動隔離，自動分段，自恢復供電，變電站自動化斷路器故障（失靈），自動重合閘，電池監(jiān)視，故障變電站轉移和變電站負荷轉移，能源管理系統(tǒng)潮流，無功和電壓監(jiān)控，發(fā)電控制，變壓器和饋電線路負荷平衡，故障分析和設備維護。沒有自動控制的系統(tǒng)仍然具有遠程監(jiān)視和操作員控制電力系統(tǒng)設備的優(yōu)點，包括:遠程監(jiān)控斷路器和自動開關遠程監(jiān)視非自動開關和熔絲遠程監(jiān)控電容組合遠程監(jiān)視和電壓控制遠程電力質量監(jiān)控前面描述的ied用來執(zhí)行電力系統(tǒng)集成和自動化。很多設計要求一個ied扮演變電站控制器的角色，執(zhí)行數(shù)據(jù)采集和控制其它ied的功能。變電站控制器也要求支持系統(tǒng)自動化任務。通信行業(yè)對設備使用術語客戶/服務器，主設備或客戶從其它設備得到數(shù)據(jù)，從設備或服務器向其它設備發(fā)送數(shù)據(jù)客戶端/服務器動態(tài)地收發(fā)數(shù)據(jù)。數(shù)據(jù)集中器通過收集，集中來自其它設備的動態(tài)數(shù)據(jù)創(chuàng)建變電站數(shù)據(jù)庫。在這種方式下，來自每個ied的重要數(shù)據(jù)子集通過一次數(shù)據(jù)轉移發(fā)送給主設備。數(shù)據(jù)集中器數(shù)據(jù)庫用于間接連接的ied之間的數(shù)據(jù)傳輸。變電站檔案客戶端/服務器從幾個設備收集、存儲數(shù)據(jù)。存檔數(shù)據(jù)可以方便供用戶檢索?，F(xiàn)在變電站的ied壽命差別很大。大多數(shù)ied仍然有用但是缺少最新的協(xié)議。通過特定波特率和協(xié)議與