本文關鍵詞： 無人值班變電站 智能監(jiān)控系統(tǒng) 開發(fā)設計 試運行　出處：《吉林大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著信息技術的不斷發(fā)展，為電網(wǎng)的快速發(fā)展帶來了機遇。對于電網(wǎng)而言，要想提升其運行和管理的效率，必須要依托信息技術建立無人值班變電站和集控站，同時還要求他們具備較高的可靠性和穩(wěn)定性，只要變電站電氣設備存在運行故障，它們能夠在第一時間偵測出這些故障并將其排除。一直以來，變電站所使用的故障診斷方法是人工檢查，按照一定的周期去巡視和檢查變電站設備的運行情況，這種方法不僅效率低，而且安全系數(shù)也低。當前，計算機監(jiān)控系統(tǒng)已經(jīng)普遍應用于無人值班變電站中，但是它們的主要功能是控制和管理變電站，并未涉及到電氣設備故障診斷領域。 本文基于此背景，開發(fā)設計了一套無人值班變電站電氣設備智能監(jiān)控系統(tǒng)，本文的主要內容可概括為四個方面： 首先，簡要地論述了變電站主要電氣設備常見的故障聲音原因分析及處理防范，這些設備包括電力變壓器、電力互感器、電容器和GIS設備； 其次，分析了監(jiān)控系統(tǒng)的技術方案，在現(xiàn)場調研的基礎上，得到了系統(tǒng)的設計方案和功能設計，系統(tǒng)的功能包括聲音信號采集與處理功能、聲音信號傳輸與故障判別功能、建立音頻數(shù)據(jù)庫、人機交互功能； 再次，進行系統(tǒng)硬件設計和軟件設計工作，其中所設計的硬件包括聲音信號采集模塊、聲音處理模塊、聲音信號傳輸與故障判別模塊、人機交互模塊、電源模塊、抗干擾模塊；所設計的軟件部分有：聲音采集與實時播放軟件、聲音壓縮與傳輸軟件、聲音特征量與頻譜分析軟件、聲音錄制與存儲軟件、通信軟件、音頻特征數(shù)據(jù)庫； 最后，在完成了監(jiān)控系統(tǒng)的設計工作后，對系統(tǒng)的試運行情況進行了分析，在確定系統(tǒng)總體性能指標的基礎上，，完成了系統(tǒng)的現(xiàn)場安裝和調試工作，并進行了試運行。 旨在通過本文的分析研究，能夠設計出一套可靠性較高的智能監(jiān)控系統(tǒng)，能夠及時準確的偵測并解決電氣設備運行中的出現(xiàn)的故障，提高無人值班變電站運行效率。
[Abstract]:With the continuous development of information technology, the rapid development of power grid has brought opportunities. In order to improve the efficiency of operation and management, we must rely on information technology to establish unattended substation and centralized control station. They are also required to have high reliability and stability, as long as substation electrical equipment operating failure, they can first detect these failures and eliminate them. Substation fault diagnosis method is manual inspection, according to a certain period to inspect and check the operation of substation equipment, this method is not only low efficiency, but also low safety factor. Computer monitoring systems have been widely used in unattended substations, but their main function is to control and manage substations, which is not involved in the field of electrical equipment fault diagnosis. Based on this background, this paper develops and designs an intelligent monitoring system for electrical equipment in unattended substations. The main contents of this paper can be summarized as four aspects: Firstly, this paper briefly discusses the analysis and prevention of common fault sound causes of main electrical equipment in substation, including power transformer, power transformer, capacitor and GIS equipment. Secondly, the technical scheme of the monitoring system is analyzed. On the basis of field investigation, the design scheme and function design of the system are obtained. The functions of the system include the sound signal acquisition and processing function. Audio signal transmission and fault identification function, the establishment of audio database, man-machine interaction function; Thirdly, the hardware design and software design of the system are carried out. The hardware includes sound signal acquisition module, sound processing module, sound signal transmission and fault identification module, human-computer interaction module. Power supply module, anti-jamming module; The software includes: sound acquisition and real-time playback software, sound compression and transmission software, sound feature and spectrum analysis software, sound recording and storage software, communication software, audio feature database; Finally, after the design of the monitoring system is completed, the trial operation of the system is analyzed. On the basis of determining the overall performance index of the system, the field installation and debugging of the system are completed. A trial operation was carried out. Through the analysis and research of this paper, we can design a set of intelligent monitoring system with high reliability, which can detect and solve the faults in the operation of electrical equipment in a timely and accurate manner. Improve the operational efficiency of unattended substations.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM63;TP277

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