【摘要】：目前,繼電保護等二次設(shè)備主要集中布置在保護小室內(nèi)。隨著智能變電站的發(fā)展、智能終端合并單元的應(yīng)用給二次專業(yè)帶來了一些新的問題,中間傳輸及轉(zhuǎn)化環(huán)節(jié)過多,繼電保護的速動性和系統(tǒng)可靠性有所降低。二次設(shè)備就地化安裝可以極大的減少與合并單元及智能終端的連接電纜,優(yōu)化二次回路設(shè)計,有效地提高智能變電站中繼電保護的可靠性,具有明顯的效益。逐步推進二次設(shè)備就地化,研究就地化相關(guān)技術(shù),將對智能變電站的發(fā)展具有重要意義。本文首先說明了二次設(shè)備就地化的意義和現(xiàn)狀,然后描述了本論文研究的某220kV變電站的詳細情況。接著對目前就地化的兩種方案,無防護、有防護方案進行了簡單介紹,對本站采用的包括寬溫顯示、預(yù)制光纜技術(shù)在內(nèi)的有防護就地化設(shè)計進行了詳細分析,并對提高智能控制柜的防護能力進行了深入研究。對于智能變電站來說,就地化二次設(shè)計方案是一次創(chuàng)新的全面的變革,促進了一二次設(shè)備的融合同時也是智能站二次設(shè)計未來發(fā)展的趨勢。最后,以蒙東地區(qū)220kV某變電站為例,結(jié)合相關(guān)技術(shù)規(guī)范,提出了該變電站就地化設(shè)計具體的實施方案,并對該方案產(chǎn)生的設(shè)計、安裝調(diào)試及運行方面的效益進行了分析。本文的主要目的在于探討出一套相對完善的、優(yōu)化的、適用性和實用性較好的二次設(shè)備就地化配置方案,力求為220kV智能變電站就地化設(shè)計、實現(xiàn)一二次設(shè)備一體化提供有參考價值的經(jīng)驗。
[Abstract]:At present, secondary equipment such as relay protection is mainly arranged in the protection chamber. With the development of intelligent substation, the application of intelligent terminal merging unit has brought some new problems to the secondary specialty. There are too many intermediate transmission and conversion links, and the rapidity of relay protection and the reliability of the system are reduced. Local installation of secondary equipment can greatly reduce the connection cable with merging unit and intelligent terminal, optimize the design of secondary circuit, effectively improve the reliability of relay protection in intelligent substation, and have obvious benefit. It is of great significance for the development of intelligent substation to promote local secondary equipment and study local technology. In this paper, the significance and present situation of local secondary equipment are first explained, and then the details of a 220kV substation studied in this paper are described. Then, the paper introduces two kinds of local protection schemes, no protection and protection, and analyzes in detail the local protection design, which includes wide temperature display, prefabricated optical cable technology, etc. The protection ability of intelligent control cabinet is studied deeply. For intelligent substation, the local secondary design scheme is an innovative and comprehensive change, which promotes the integration of primary and secondary equipment and is also the future development trend of the secondary design of intelligent substation. Finally, taking a 220kV substation in Mendong area as an example, combined with relevant technical specifications, the concrete implementation scheme of the local design of the substation is put forward, and the benefits of the design, installation, commissioning and operation of the scheme are analyzed. The main purpose of this paper is to discuss a set of relatively perfect, optimized, applicable and practical local configuration scheme of secondary equipment, and to make every effort for local design of 220kV intelligent substation. The realization of the first and second equipment integration provides valuable experience.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM63;TM502

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