本文選題：變電站 + 直流電源��； 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：變電站直流系統(tǒng)被稱為變電站的動脈,它為變電站的開關(guān)電源、繼電保護(hù)裝置及自動化設(shè)備等提供電源,特別是在電力系統(tǒng)出現(xiàn)故障時為變電站的安全運(yùn)行提供可靠的電力保證。當(dāng)前,國家電網(wǎng)對直流系統(tǒng)的運(yùn)行和管理都有嚴(yán)格的規(guī)范,其中7+2文件中更是對變電站直流系統(tǒng)的運(yùn)行、管理維護(hù)工作提出來更加明確和嚴(yán)格的要求。 由于目前變電站綜合自動化程度越來越高,并且無人值守變電站已成趨勢,而直流電源系統(tǒng)直接為其他自動化裝置提供基礎(chǔ)的源動力,所以直流電源本身一但出現(xiàn)問題,隨之而來的保護(hù)失靈、開關(guān)拒動、通道中斷等后果不堪設(shè)想。近年來因直流電源題目導(dǎo)致的重大電力事故時有發(fā)生,導(dǎo)致重大的經(jīng)濟(jì)損失,直流遠(yuǎn)程監(jiān)控系統(tǒng)也隨之引出。 該論文結(jié)合現(xiàn)實(shí)狀況以及出現(xiàn)的問題,研究和建立直流系統(tǒng)遠(yuǎn)程監(jiān)控及維護(hù),監(jiān)控直流充電機(jī)運(yùn)行狀態(tài)、電池的單體電壓、內(nèi)阻、溫度、控制母線電壓、合閘母線電壓、控制母線接地、空開跳閘檢測等重要電源特性參數(shù),還可遠(yuǎn)程進(jìn)行蓄電池的充放電試驗(yàn),通過聲光報警的方式響應(yīng)變電站直流電源狀態(tài)的異常,還可通過以太網(wǎng)將變電站直流電源異常狀態(tài)上報到監(jiān)控中心。同時,還可通過短信方式通知相關(guān)責(zé)任人,使變電站直流電源的異常能夠第一時間被發(fā)現(xiàn),并能夠得到及時處理,從而避免重大電力事故的發(fā)生。
[Abstract]:The DC system of a substation is called the artery of a substation. It supplies power to the switching power supply, relay protection device and automation equipment of the substation. Especially in the event of power system failure, it can provide reliable power guarantee for the safe operation of substation. At present, the State Grid has strict regulations on the operation and management of DC system, among which the operation and management and maintenance of DC system in substation are required more clearly and strictly in the 7.2 document. At present, the degree of comprehensive automation of substations is getting higher and higher, and the unattended substations have become a trend, and the DC power supply system directly provides the basic source power for other automation devices, so once the DC power supply itself appears, there is a problem. The following protection failure, switch failure, channel interruption and other consequences unthinkable. In recent years, the major electric power accidents caused by DC power supply problems occur frequently, resulting in significant economic losses, and the DC remote monitoring system also leads to. This paper studies and establishes the remote monitoring and maintenance of DC system, monitors the running state of DC charger, the cell voltage, internal resistance, temperature, control bus voltage, closing bus voltage, and so on. Important power characteristic parameters, such as controlling bus grounding and detecting air trip, can also be used to conduct battery charge and discharge tests remotely, and to respond to the abnormal state of DC power supply in substation by acousto-optic alarm. The abnormal status of DC power supply in substation can also be reported to the monitoring center by Ethernet. At the same time, it can also notify the relevant responsible person by short message, so that the anomaly of DC power supply in substation can be detected in the first time, and can be dealt with in time, so as to avoid the occurrence of major electric power accident.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM63;TM76

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李芳培;毛建國;沈\，

本文編號：2010542