【摘要】：隨著IEC61850標(biāo)準(zhǔn)的不斷完善,智能變電站對(duì)時(shí)鐘源精度和穩(wěn)定性的要求越來越高。本文以智能變電站為應(yīng)用背景,根據(jù)GPS與晶振的誤差互補(bǔ)特性,提出了滿足智能變電站時(shí)鐘同步精度要求的高精度時(shí)鐘設(shè)計(jì)方案。 論文首先研究了GPS時(shí)鐘與晶振時(shí)鐘誤差特性,并對(duì)GPS時(shí)鐘與晶振時(shí)鐘的秒脈沖時(shí)間間隔進(jìn)行分析,論證了該時(shí)間間隔為GPS時(shí)鐘與晶振時(shí)鐘誤差之和；然后,對(duì)實(shí)驗(yàn)采集的秒脈沖時(shí)間間隔曲線進(jìn)行傅立葉分析,從而確定采用小波濾波+RBF神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)的高精度時(shí)鐘算法,并完成對(duì)高精度時(shí)鐘的總體結(jié)構(gòu)和各模塊的設(shè)計(jì)；接著,采用MATLAB軟件對(duì)小波濾波算法、RBF網(wǎng)絡(luò)預(yù)測(cè)算法以及組合算法進(jìn)行仿真驗(yàn)證,結(jié)果表明本文高精度時(shí)鐘算法能夠很好地濾除GPS時(shí)鐘的隨機(jī)誤差,并實(shí)現(xiàn)對(duì)晶振時(shí)鐘誤差的精確預(yù)測(cè)。 論文最后還論述了本文高精度時(shí)鐘的軟硬件實(shí)現(xiàn)過程,其中包括Compact-RIO平臺(tái)的開發(fā)和IRIG-B碼解析板卡的研制兩個(gè)部分。采用銣原子鐘裝置對(duì)本文所設(shè)計(jì)的高精度時(shí)鐘進(jìn)行性能測(cè)試,測(cè)試結(jié)果表明該高精度時(shí)鐘輸出的秒脈沖精確性高、穩(wěn)定性好,能夠滿足智能變電站時(shí)鐘精度的要求。
[Abstract]:With the improvement of IEC61850 standard, the precision and stability of clock source are required more and more in intelligent substation. Based on the application background of intelligent substation and the complementary error between GPS and crystal oscillator, a high precision clock design scheme for intelligent substation clock synchronization accuracy is proposed in this paper. Firstly, the error characteristics of GPS clock and crystal oscillator clock are studied, and the second pulse time interval between GPS clock and crystal oscillator clock is analyzed. It is proved that the time interval is the sum of GPS clock and crystal oscillator clock error. Then, the time-interval curve of second pulse is analyzed by Fourier analysis, and the high-precision clock algorithm predicted by wavelet filter RBF neural network is determined, and the overall structure of high-precision clock and the design of each module are completed. Then, the wavelet filtering algorithm, the RBF network prediction algorithm and the combination algorithm are simulated by MATLAB software. The results show that the high precision clock algorithm in this paper can filter the random error of GPS clock very well. The accurate prediction of clock error is realized. At the end of the paper, the software and hardware implementation of high precision clock is discussed, including the development of Compact-RIO platform and the development of IRIG-B code analysis board. The performance of the high precision clock designed in this paper is tested by using rubidium atomic clock device. The test results show that the clock output of this high precision clock has high accuracy and good stability, and it can meet the requirements of clock precision in intelligent substation.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM63;TM76

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張坤;鄧志剛;張道農(nóng);鄧星星;胡炯;邱祖雄;;智能化變電站中多源自適應(yīng)時(shí)間同步系統(tǒng)[J];電力科學(xué)與技術(shù)學(xué)報(bào);2011年03期

2 李澤文;曾祥君;黃智偉;雷莉;馬洪江;;基于高精度晶振的GPS秒時(shí)鐘誤差在線修正方法[J];電力系統(tǒng)自動(dòng)化;2006年13期

3 李澤文;姚建剛;曾祥君;鄧豐;楚湘輝;;基于數(shù)字鎖相原理的GPS高精度同步時(shí)鐘產(chǎn)生新方法[J];電力系統(tǒng)自動(dòng)化;2009年18期

4 胡巨;高新華;;SNTP對(duì)時(shí)方式在數(shù)字化變電站中應(yīng)用[J];電力自動(dòng)化設(shè)備;2009年03期

5 張保會(huì);郝治國(guó);;智能電網(wǎng)繼電保護(hù)研究的進(jìn)展(一)——故障甄別新原理[J];電力自動(dòng)化設(shè)備;2010年01期

6 高磊;袁宇波;宋亮亮;;智能變電站監(jiān)控系統(tǒng)時(shí)間體系研究[J];電力自動(dòng)化設(shè)備;2012年03期

7 李建,謝小榮,韓英鐸,胡炯,吳雅璐,吳京濤;北斗衛(wèi)星導(dǎo)航系統(tǒng)與GPS互備授時(shí)的分布式相量測(cè)量單元[J];電網(wǎng)技術(shù);2005年09期

8 邢振鵬;;北斗/GPS衛(wèi)星同步授時(shí)系統(tǒng)在焦作電廠的應(yīng)用[J];電力信息化;2009年07期

9 張信權(quán);梁德勝;趙希才;;時(shí)鐘同步技術(shù)及其在變電站中的應(yīng)用[J];繼電器;2008年09期

10 郜洪亮;劉遵義;;基于GPS和FPGA的便攜式高精度同步時(shí)鐘的研制[J];電力系統(tǒng)保護(hù)與控制;2009年02期

，

本文編號(hào)：2323552