本文選題：數(shù)字故障指示器 + 北斗導(dǎo)航系統(tǒng)　； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：配電網(wǎng)與用戶(hù)端直接相連,負(fù)荷種類(lèi)多、電網(wǎng)結(jié)構(gòu)復(fù)雜,線路故障特別是線路單相接地故障的查找非常困難,若此類(lèi)故障不能及時(shí)排除,將導(dǎo)致電網(wǎng)運(yùn)行的可靠性降低,影響整個(gè)電網(wǎng)的運(yùn)行。在此背景下,縮小配電線路故障排查范圍,提高配電網(wǎng)線路運(yùn)維的水平和效率,確保配電網(wǎng)絡(luò)的安全、可靠、經(jīng)濟(jì)運(yùn)行至關(guān)重要。基于北斗導(dǎo)航系統(tǒng)的智能配網(wǎng)線路綜合監(jiān)測(cè)系統(tǒng)是通過(guò)在線路上安裝故障指示器將線路故障信息反饋到主站系統(tǒng),從而實(shí)現(xiàn)主動(dòng)上報(bào)線路故障信息。其中,利用北斗衛(wèi)星導(dǎo)航系統(tǒng),能夠?qū)崿F(xiàn)時(shí)鐘同步,因此該系統(tǒng)可以高度安全地實(shí)現(xiàn)線路故障快速定位。本文開(kāi)發(fā)的基于北斗導(dǎo)航系統(tǒng)的智能配網(wǎng)線路綜合監(jiān)測(cè)系統(tǒng)由配電網(wǎng)數(shù)字故障指示器、北斗通信網(wǎng)絡(luò)、主站系統(tǒng)組成,本文對(duì)這三部分進(jìn)行了詳細(xì)研究。研發(fā)了帶北斗通信模塊的新型數(shù)字故障指示器。該數(shù)字故障指示器能夠檢測(cè)短路故障、接地故障、過(guò)流或過(guò)負(fù)荷越限以及停電,其通訊分為兩個(gè)部分,一個(gè)是數(shù)字故障指示器與北斗通信終端的通訊,另一個(gè)是北斗通信終端與主站的通訊。開(kāi)發(fā)的北斗通信模塊由基帶芯片、射頻芯片、低噪放大器和功率放大器等組成,該模塊通過(guò)配置外部設(shè)備實(shí)現(xiàn)定位和通信功能。設(shè)計(jì)了基于短報(bào)文的北斗通信網(wǎng)絡(luò)。在研究分析了北斗衛(wèi)星導(dǎo)航系統(tǒng)短報(bào)文通信的機(jī)制、特點(diǎn)和限制的基礎(chǔ)上,對(duì)北斗短報(bào)文通信的可靠傳輸算法進(jìn)行了設(shè)計(jì),分別設(shè)計(jì)了發(fā)送與接收流程、響應(yīng)流程和補(bǔ)包流程,給出了發(fā)送端和接收端的程序流程圖。對(duì)基于北斗短報(bào)文的動(dòng)態(tài)組網(wǎng)方式進(jìn)行了研究,該方法需要自建北斗數(shù)據(jù)中心,北斗數(shù)據(jù)中心與各通信終端形成一個(gè)星形網(wǎng)絡(luò)結(jié)構(gòu),北斗數(shù)據(jù)中心為各終端提供的服務(wù)包括數(shù)據(jù)轉(zhuǎn)發(fā)以及數(shù)據(jù)推送。開(kāi)發(fā)了系統(tǒng)主站應(yīng)用功能。主站接收通過(guò)北斗衛(wèi)星通信網(wǎng)絡(luò)發(fā)送過(guò)來(lái)的故障信息數(shù)據(jù)及定位信息數(shù)據(jù),對(duì)數(shù)據(jù)進(jìn)行存儲(chǔ)、處理,通過(guò)拓?fù)浞治龊陀?jì)算對(duì)配電網(wǎng)線路全面監(jiān)測(cè)。闡述了主站功能開(kāi)發(fā)的總體目標(biāo)、主站的通信方式以及主站的主要工作流程。主站系統(tǒng)的主要應(yīng)用功能有系統(tǒng)管理、線路電流預(yù)警設(shè)置、圖形管理、數(shù)據(jù)查詢(xún)、前置通信軟件功能和后臺(tái)監(jiān)控軟件功能。最后,對(duì)系統(tǒng)功能模塊進(jìn)行了實(shí)現(xiàn),對(duì)系統(tǒng)實(shí)際工程應(yīng)用情況進(jìn)行了說(shuō)明,分析了系統(tǒng)經(jīng)濟(jì)效益。本系統(tǒng)能夠有效縮短配電網(wǎng)發(fā)生故障后故障定位需要花費(fèi)的時(shí)間,節(jié)約人力、物力,有利于提高配電網(wǎng)線路運(yùn)維的水平和效率,具有廣闊的前景。
[Abstract]:The distribution network is directly connected with the user side, with many kinds of loads, complicated power network structure, and it is very difficult to find line faults, especially single-phase grounding faults. If this kind of fault can not be eliminated in time, the reliability of power network operation will be reduced. Affect the operation of the whole power grid. Under this background, it is very important to narrow down the scope of fault detection of distribution lines, improve the level and efficiency of operation and maintenance of distribution lines, and ensure the safety, reliability and economic operation of distribution networks. The integrated monitoring system of intelligent distribution network line based on Beidou navigation system is that the fault information of the line is fed back to the main station system by installing the fault indicator on the line so as to realize the active reporting of the line fault information. Among them, the Beidou satellite navigation system can realize clock synchronization, so the system can achieve high safety fast fault location. The intelligent distribution line integrated monitoring system based on Beidou navigation system is developed in this paper, which is composed of digital fault indicator of distribution network, Beidou communication network and master station system. In this paper, the three parts are studied in detail. A new type of digital fault indicator with Beidou communication module is developed. The digital fault indicator can detect short circuit faults, ground faults, overcurrent or overload overruns and power outages. Its communication is divided into two parts, one is the communication between the digital fault indicator and the Beidou communication terminal. The other is the communication between the Beidou communication terminal and the master station. The Beidou communication module is composed of baseband chip, RF chip, low noise amplifier and power amplifier. A Beidou communication network based on short message is designed. On the basis of studying and analyzing the mechanism, characteristics and limitations of short message communication in Beidou satellite navigation system, the reliable transmission algorithm of Beidou short message communication is designed, and the sending and receiving flow, response flow and packet filling flow are designed respectively. The program flow chart of the transmitter and receiver is given. The dynamic networking method based on Beidou short message is studied. This method needs to build the Beidou data center, and the Beidou data center and each communication terminal form a star network structure. Beidou data Center provides services for each terminal, including data forwarding and data push. The main station application function of the system is developed. The master station receives the fault information data and the location information data sent by the Beidou satellite communication network, stores and processes the data, and monitors the distribution network lines by topology analysis and calculation. The main goal of the main station function development, the communication mode of the main station and the main work flow of the master station are expounded. The main application functions of the main station system include system management, line current warning setting, graph management, data query, front communication software function and background monitoring software function. Finally, the function module of the system is realized, the practical engineering application of the system is explained, and the economic benefit of the system is analyzed. The system can effectively shorten the time spent in fault location after fault in distribution network, save manpower and material resources, improve the level and efficiency of line operation and maintenance in distribution network, and have a broad prospect.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM75

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本文編號(hào)：1956157