外文變電站文獻(xiàn)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上 Power System Substation is an important and indispensable component of the power it assumed the task of conversion and distribution of grid security and the economy play a decisive role in running is to contact the user's power plants and intermediate links. With economic developme

2、nt, expanding grid capacity, reliability of operation of the power grid is getting higher and higher requirements. Development of science and technology, intelligent switches, photoelectric current and voltage transformer, a run-line state detection, training simulation Substation Operation matures,

3、 such as high-tech, as well as fiber-optic technology, computer high-speed network system in the development of real-time applications, bound to the existing substation automation technology have a profound impact, all-digital substation automation system development trend. Power system is operated

4、by the production, transmission, distribution and consumption of a variety of power linked to the composition of electrical equipment. As a result of a large number of power can not be stored, we must ensure that the production of electricity and energy balance. With the scientific and technological

5、 advances in the technological development of our country has reached a certain level. Intelligent switches, photoelectric current and voltage transformer, a run-line state detection, training simulation Substation Operation matures, such as high-tech, as well as fiber-optic technology, computer hig

6、h-speed network system in the development of real-time applications, significantly increase the transformation degree of automation. Design of our substation substation cable programs tend to be simple, many of the recent domestic new 220 k V substation and 110kV voltage levels of wiring without the

7、 use of dual-bus bypass bus. The use of GIS, the priority sub-bus single wire. Terminal Substation, the line as far as possible, such as transformer unit wiring. A large number of the introduction of new technology, transformer substation rising level of electrical equipment, power distribution devi

8、ces from the traditional form of moving toward oil-free, vacuum switches, SF6 switches and mechanical, electrical equipment combination of the development of small-scale integration. In recent years the world famous high-voltage electrical equipment companies have been developing, the development of

9、 the various types of 145-550 kV outdoor high-pressure and ultrahigh-pressure combination of electrical appliances, some high-voltage switchgear plant has also started production of 145 k V compact outdoor portfolio electrical appliances. Smart plug-in type outdoor switchgear is a more complete high

10、-pressure and ultrahigh-pressure switch system, which includes electrical first and second equipment, as well as the associated fiber optic cable, such as plug-type compound. The entire distributed substation automation system; the introduction of advanced network technology; substation and the cons

11、truction area covers an area of reduced substation program to simplify wiring, switchgear, bus and steel pipes, such as the use of stents to substation layout is more simple, the abolition of the former station area and optimize the layout to make a substantial decline in an area substation. With te

12、chnological advances, the traditional relay protection devices are gradually being replaced by microprocessor-based protection. Microprocessor-based protection is referred to as the protection of PC computer, a digital relay protection, is based on the programmable digital circuit technology and rea

13、l-time digital signal processing technology of the Power System Protection. At present, both at home and abroad have been developed to 32-bit digital signal processor for hardware-based protection, control, measurement, and data communications integration of microprocessor-based protection control d

14、evices, and artificial intelligence technology into a number of relay protection, such as artificial neural networks, fuzzy theory to determine the realization of fault type, fault location, the direction of protection, the main equipment and other new methods of protection. By means of wavelet anal

15、ysis of the theory of digital signal failure of the entire frequency band information and to achieve fault detection. These artificial intelligence technology to improve the accuracy of failure to provide a means of identification, but also some single-frequency signal based on the traditional metho

16、d difficult to identify the problems to be resolved. At present, the microprocessor-based relay protection is along the microprocessor-based protection network, and intelligent, adaptive and protection, control, measurement, signal, data communications integration direction.譯文：變電站是電力系統(tǒng)中不可缺少的重要組成部分，它

17、擔(dān)負(fù)著電能轉(zhuǎn)換和分配的任務(wù)，對電網(wǎng)的安全和經(jīng)濟(jì)運(yùn)行起著舉足輕重的作用，是聯(lián)系發(fā)電廠和用戶的中間環(huán)節(jié)。隨著經(jīng)濟(jì)的發(fā)展，電網(wǎng)容量不斷擴(kuò)大，對電網(wǎng)運(yùn)行的可靠性要求也越來越高?？茖W(xué)技術(shù)的發(fā)展、智能化開關(guān),光電式電流電壓互感器,一次運(yùn)行設(shè)備在線狀態(tài)檢測,變電站運(yùn)行操作培訓(xùn)仿真等高新技術(shù)日趨成熟,以及光纖技術(shù)、計(jì)算機(jī)高速網(wǎng)絡(luò)在實(shí)時(shí)系統(tǒng)中的開發(fā)應(yīng)用,勢必對現(xiàn)有的變電站自動化技術(shù)產(chǎn)生深刻的影響,全數(shù)字化的變電站自動化系統(tǒng)成為發(fā)展的趨勢。 電力系統(tǒng)是由生產(chǎn)、輸送、分配和消費(fèi)電能的各種電氣設(shè)備連接在一起組成。由于電能無法大量儲存，必須保證用電和電能生產(chǎn)的平衡。隨著科學(xué)技術(shù)的不斷進(jìn)步，我們國家的技術(shù)發(fā)展已經(jīng)達(dá)到一定

18、的水平。智能化開關(guān),光電式電流電壓互感器,一次運(yùn)行設(shè)備在線狀態(tài)檢測,變電站運(yùn)行操作培訓(xùn)仿真等高新技術(shù)日趨成熟,以及光纖技術(shù)、計(jì)算機(jī)高速網(wǎng)絡(luò)在實(shí)時(shí)系統(tǒng)中的開發(fā)應(yīng)用,大大的提高變電自動化程度。我國變電站設(shè)計(jì)開始趨向于變電站接線方案簡單，近期國內(nèi)新建的許多變電站220 k V及110kV電壓等級的接線采用雙母線而不帶旁路母線。采用GIS的情況下，優(yōu)先采用單母線分段接線。終端變電站中，盡量采用線路變壓器組接線等。大量采用新的技術(shù)，變電站電氣設(shè)備檔次不斷提高，配電裝置也從傳統(tǒng)的形式走向無油化、真空開關(guān)、SF6開關(guān)和機(jī)、電組合一體化的小型設(shè)備發(fā)展。近年來世界各國著名的高壓電氣設(shè)備公司都相繼開發(fā)、研制了各種類型的145-550 kV戶外高壓和超高壓組合電器，國內(nèi)一些高壓開關(guān)廠也已經(jīng)開始生產(chǎn)145 k V戶外緊湊型組合電器。戶外插接式智能型組合電器是一種功能更完備的高壓和超高壓開關(guān)系統(tǒng)，它內(nèi)含電氣一次、二次設(shè)備，以及相關(guān)連的插接式復(fù)合光纜等。全分散式變電站自動化系統(tǒng)；引入先進(jìn)的網(wǎng)絡(luò)技術(shù)；變電站占地及建筑面積減少，變電站接線方案的簡化，組合電器、管母線及鋼支架等的采用，使變電站布置更為簡單，取消站前區(qū)和優(yōu)化布置使變電站占地大幅度下降。隨著技術(shù)的進(jìn)步，傳統(tǒng)的繼電保護(hù)裝置正逐步被微機(jī)保護(hù)所取代。微機(jī)保護(hù)是微機(jī)計(jì)算機(jī)保護(hù)的簡稱，是一種數(shù)字式繼電保護(hù)，是基于可編程