【正文】 ction response and terminations of the white transformer winding faults, it can jump on each side of the transformer circuit breaker. The recurrent protection voltage lockout Complex pressure response to the external phase lock overcurrent protection can be caused by a short overcurrent and as a gas, differential protection of the reserve. Action on the trip. The current and voltage transformer protection Changing external electrical fault occurred, resulting overcurrent transformer winding, and an internal fault in the transformer when the gas as a backup protection and differential protection, the transformer should be installed overcurrent protection. And according to the system shortcircuit current and transformer capacity of different, you can choose different protection methods, including lowvoltage start over current protection, over current protection, negative sequence overcurrent protection. 3 characteristics of power transformer relay protection system High reliability Information management system in substation relay protection, high reliability, because it uses methods of data warehouse and database, to facilitate system maintenance and upgrades. The entire information management system is no longer in operation prior to transmission to the distributed users at all levels, but concentrated in the center of the network database and rule base. Even if one of the customer39。s workstation problems, damaged, it will not affect the normal operation of the entire information system, and recovery is very simple, software developers, system upgrading library only limited ways, so that The whole process easy and convenient. practical Operation in the production of some of the practical problems, an effective solution to all types of data between the second part of the use and sharing. This system can analyze the system and the data statistics, which for the protection of the technical staff who have practical, can run a certain extent, improve the level of protection. Remote Monitoring Protection device with the PC serial munication function, and remote puter monitoring system substations to municate with contacts, so that the whole puter with remote monitoring of protection, which no one substation to provide a protective relay system. 4 Realization of power transformer protection Software applications The main query for all types of secondary information on the three remote realtime analysis of data processing, records of previous trial to pare fixed, accident, failure alarm events such as instructions and response time and the number of times the action statistics. The material of the secondary equipment testing, recording, management and valuation trial notice given by the protection officer by that date, to other department for advice and sharing. It can be achieved between the database and linked images and graphics are reflected in the existence of secondary equipment failures and defects, and records and the operation of protective devices for effective analysis. Set a parameter interface equipment, such as voltage, power and current records of test equipment can be effectively carried out with a wiring diagram of the main query, the system this as a secondary source of data, the assistant analysis can also be used for press release boards and to facilitate the exchange of information between departments and cooperation. Data Warehousing and method library Currently, the data warehouse is a traditional relational database than the original function more and more data organization, it is not only the application interface, nonstructural dynamic storage interfaces, and has a strong performance, but with vast amounts of data processing capabilities. In addition, the method library is able to package and store large amounts of processing the rule base is the concentrated expression of the application forms of software, it can save the integrity of the data, effectively limit the use of customers. The establishment of model system In recent years, with extensive use of puter technology, business can not develop without the use of information resources. Therefore, the transformer relay protection management system, but also should pay attention to this point, you can learn from the outside space available information and data, can also provide certain information to the external space of data, the use of intranet system model is established now the main mode. 5 Conclusion In summary, since the power system operation, the transformer protection is an essential part of it can prevent accidents and reduce the scope of incidents to improve system reliability, the maximum continuous power supply to ensure safety to the user. 譯文：淺談電力變壓器的繼電保護(hù) 摘要: 變壓器是電力系統(tǒng)中較為重要的電氣原件,它具有故障小,結(jié)構(gòu)可靠的特點(diǎn),但是在實(shí)際的運(yùn)行過(guò)程中,還是會(huì)產(chǎn)生一定的故障和異常情況。因此,為了減少故障對(duì)電力系統(tǒng)造成的影響,保護(hù)電力系統(tǒng)的安全運(yùn)行,必須根據(jù)電力變電站的容量、電壓的等級(jí)情況,安裝可靠性較高的繼電保護(hù)裝置。隨著電力電子技術(shù)的不斷發(fā)展,微機(jī)已在電力變壓器的繼電保護(hù)中起到至關(guān)重要的作用,就此對(duì)電力變壓器微機(jī)繼電保護(hù)進(jìn)行簡(jiǎn)要的分析。關(guān)鍵詞:電力變壓器。繼電保護(hù)。微機(jī)電力變電站是電力系統(tǒng)正常、安全運(yùn)行中不可分割的一部分,它有利于功率的傳輸,在同一段線路上,能夠相同等級(jí)的功率,電壓在傳輸過(guò)程中,經(jīng)過(guò)升壓變壓器升壓以后,可以減少傳輸?shù)碾娏髁?使線路的損耗降到最低,從而達(dá)到遠(yuǎn)距離送點(diǎn)的目的,滿足用戶的需求。1 繼電保護(hù)概述在電力系統(tǒng)運(yùn)行中,為了能夠從根本上保證供電的可靠性和系統(tǒng)的正常運(yùn)行,就必須進(jìn)行相應(yīng)的繼電保護(hù)。當(dāng)電力系統(tǒng)發(fā)生故障或異常工況時(shí),在可能實(shí)現(xiàn)的最短時(shí)間和最小區(qū)域內(nèi),自動(dòng)將故障設(shè)備從系統(tǒng)中切除,或發(fā)出信號(hào)由值班人員消除異常工況根源,以減輕或避免設(shè)備的損壞和對(duì)相鄰地區(qū)供電的影響。繼電保護(hù)裝置必須具備4項(xiàng)基本性能:靈敏性,反映故障的能力,通常以靈敏系數(shù)表示?？煽啃?在該動(dòng)作時(shí),不發(fā)生拒動(dòng)作?？焖傩?能以最短時(shí)限將故障或異常消除。選擇性,在可能的最小區(qū)間切除故障,保證最大限度地向無(wú)故障部分繼續(xù)供電。選擇繼電保護(hù)方案時(shí),除設(shè)置需滿足以上4 項(xiàng)基本性能外,還應(yīng)注意其經(jīng)濟(jì)性。即不僅考慮保護(hù)裝置的投資和運(yùn)行維護(hù)費(fèi),還必須考慮因裝置不完善而發(fā)生拒動(dòng)或誤動(dòng)對(duì)國(guó)民經(jīng)濟(jì)和社會(huì)生活造成的損失。2 變壓器保護(hù)配置及作用 瓦斯保護(hù)瓦斯保護(hù)作為變壓器的主要保護(hù)措施,它能夠反映變壓器油箱內(nèi)的故障和油面降低。當(dāng)出現(xiàn)輕微故障的時(shí)候,油面會(huì)出現(xiàn)下降的情況,輕瓦斯動(dòng)作于信號(hào),當(dāng)發(fā)生嚴(yán)重故障的時(shí)候,會(huì)產(chǎn)生大量的氣體,重瓦斯會(huì)產(chǎn)生跳閘,跳開(kāi)主變各側(cè)斷路器。對(duì)于一些帶有負(fù)荷調(diào)壓的變壓器的調(diào)壓裝置,一般都設(shè)置有載瓦斯,和上述一樣的道理,當(dāng)發(fā)生輕瓦斯動(dòng)作的時(shí)候,會(huì)發(fā)出一定的信號(hào),當(dāng)發(fā)生重瓦斯動(dòng)作時(shí),出現(xiàn)跳閘現(xiàn)象。繼電保護(hù)動(dòng)作斷路器跳閘后,不要隨即將掉牌信號(hào)復(fù)歸,而應(yīng)檢查保護(hù)動(dòng)作情況,并查明原因,在消除故障恢復(fù)送電前,方可將所有的掉牌信號(hào)全部復(fù)歸。 差動(dòng)保護(hù)差動(dòng)保護(hù)作為變壓器的主保護(hù)反應(yīng)變壓器繞組和引出線的相間故障,它能夠跳開(kāi)變壓器各側(cè)斷路器。 復(fù)壓閉鎖過(guò)流保護(hù)復(fù)壓閉鎖過(guò)流保護(hù)能夠反應(yīng)外部相間短路所引起的過(guò)電流和作為瓦斯、差動(dòng)保護(hù)的后備。動(dòng)作于跳閘。 變壓器的電流和電壓保護(hù)在變電氣出現(xiàn)外部故障,而產(chǎn)生變壓器繞組過(guò)電流,而在變壓器出現(xiàn)內(nèi)部故障的時(shí)候,作為瓦斯保護(hù)和差動(dòng)保護(hù)的后備,變壓器應(yīng)該安裝過(guò)電流的保護(hù)。并且根據(jù)系統(tǒng)短路電流和變壓器容量的不同,可以選擇不同的保護(hù)方法,包括低電壓?jiǎn)?dòng)的過(guò)電