本文選題：分布式電網(wǎng)　切入點(diǎn)：電能質(zhì)量　出處：《上海電力學(xué)院》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著分布式電網(wǎng)的快速發(fā)展,大功率電力電子變流裝置在電力系統(tǒng)負(fù)載中所占比例變得越來越大,給分布式電網(wǎng)帶來了前所未有的沖擊與污染,產(chǎn)生了大量的電能質(zhì)量問題,嚴(yán)重影響了電網(wǎng)的電能質(zhì)量和安全穩(wěn)定。電網(wǎng)結(jié)構(gòu)的不斷變化,使得傳統(tǒng)監(jiān)測(cè)系統(tǒng)不能適應(yīng)新的發(fā)展需求,促使企業(yè)或研發(fā)人員研發(fā)能夠適應(yīng)分布式電網(wǎng)的電能質(zhì)量在線監(jiān)測(cè)裝置。為此,本文結(jié)合分布式電網(wǎng)電能質(zhì)量特性和功能需求,借鑒現(xiàn)有電能質(zhì)量監(jiān)測(cè)裝置的實(shí)踐成果,對(duì)以下幾個(gè)部分進(jìn)行分析與研究:(1)闡述本課題的研究背景和意義,分布式電網(wǎng)電能質(zhì)量在線監(jiān)測(cè)裝置的研究現(xiàn)狀及存在的問題以及分布式電網(wǎng)電能質(zhì)量在線監(jiān)測(cè)系統(tǒng)的拓?fù)浣Y(jié)構(gòu);(2)建立了分布式電網(wǎng)的數(shù)學(xué)模型,采用PSCAD軟件搭建分布式電網(wǎng)仿真系統(tǒng),分析DG并網(wǎng)位置、容量對(duì)電能質(zhì)量的影響,為設(shè)計(jì)分布式電網(wǎng)電能質(zhì)量在線監(jiān)測(cè)裝置提供了參考;(3)簡要介紹了電能質(zhì)量參數(shù)的基本概念及相關(guān)國家標(biāo)準(zhǔn),為設(shè)計(jì)分布式電網(wǎng)電能質(zhì)量在線監(jiān)測(cè)裝置的軟、硬件提供設(shè)計(jì)依據(jù);(4)硬件設(shè)計(jì)部分給出了以DSP+FPGA+ARM為結(jié)構(gòu)的系統(tǒng)設(shè)計(jì)方案,包括信號(hào)采集電路、信號(hào)調(diào)理電路、數(shù)字信號(hào)處理電路、人機(jī)交互和通信電路等等。對(duì)于每一個(gè)模塊,給出了詳細(xì)的硬件選型和電路設(shè)計(jì)方案,包括硬件的內(nèi)部結(jié)構(gòu),接口電路的設(shè)計(jì),電源管理電路的設(shè)計(jì)等等;(5)軟件設(shè)計(jì)部分介紹了幾個(gè)模塊的程序算法設(shè)計(jì),包括:FFT子程序設(shè)計(jì)、電能質(zhì)量參數(shù)測(cè)量算法設(shè)計(jì)、頻譜泄漏改進(jìn)算法設(shè)計(jì)、主程序設(shè)計(jì)、AD采樣中斷子程序設(shè)計(jì)、DSP數(shù)據(jù)處理主程序設(shè)計(jì)、通信中斷服務(wù)子程序設(shè)計(jì)、ARM主程序設(shè)計(jì)以及人機(jī)界面設(shè)計(jì);(6)通過微微網(wǎng)測(cè)試平臺(tái),驗(yàn)證了本監(jiān)測(cè)裝置適用于分布式電網(wǎng)系統(tǒng),且系統(tǒng)的各項(xiàng)基本功能和指標(biāo)達(dá)到了相關(guān)的國家標(biāo)準(zhǔn)。
[Abstract]:With the rapid development of distributed power grid, the proportion of high-power power electronic converter in power system load becomes more and more large, which brings unprecedented impact and pollution to distributed power network, and produces a large number of power quality problems. It has seriously affected the power quality and safety and stability of the power network. With the continuous change of power network structure, the traditional monitoring system can not adapt to the new development needs. In this paper, combining with the characteristics and functional requirements of power quality in distributed power grid, the practical results of the existing power quality monitoring devices are used for reference. The following several parts are analyzed and studied. (1) explain the research background and significance of this subject. The present situation and existing problems of the distributed power quality on-line monitoring device and the topology of the distributed power quality on-line monitoring system are discussed. The mathematical model of the distributed power network is established. The distributed power network simulation system is built with PSCAD software, and the influence of DG location and capacity on power quality is analyzed. This paper provides a reference for the design of distributed power quality on-line monitoring device. It briefly introduces the basic concept of power quality parameters and related national standards, and provides the software for the design of distributed power quality on-line monitoring device. In the hardware design part, the system design scheme based on DSP FPGA ARM is given, which includes signal acquisition circuit, signal conditioning circuit, digital signal processing circuit, etc. For each module, the detailed hardware selection and circuit design scheme are given, including the internal structure of the hardware, the design of the interface circuit, In the part of the software design, we introduce the algorithm design of several modules, including the design of the subprogram of: FFT, the algorithm of measuring the parameters of power quality, the design of the improved algorithm of spectrum leakage. The main program design includes AD sampling interrupt subprogram design and DSP data processing main program design, communication interrupt service subprogram design arm main program design and man-machine interface design. It is verified that the monitoring device is suitable for distributed power system, and the basic functions and indexes of the system are up to the relevant national standards.
【學(xué)位授予單位】：上海電力學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM930

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周俊;劉明;邱愛兵;;基于FPGA的基2-FFT算法在諧波檢測(cè)系統(tǒng)中的研究[J];電力電容器與無功補(bǔ)償;2016年06期

2 張戰(zhàn)彬;翟紅霞;徐華博;趙輝;趙麗霞;;光伏電站多逆變器并網(wǎng)系統(tǒng)輸出諧波研究[J];電力系統(tǒng)保護(hù)與控制;2016年14期

3 沈鑫;曹敏;;分布式電源并網(wǎng)對(duì)于配電網(wǎng)的影響研究[J];電工技術(shù)學(xué)報(bào);2015年S1期

4 傅志生;白曉清;李佩杰;韋化;;一種快速求解大規(guī)模安全約束最優(yōu)潮流的多核并行方法[J];電力系統(tǒng)保護(hù)與控制;2015年03期

5 何昌奇;邵龍;高楊;盧佳;;分布式電源并網(wǎng)后對(duì)電壓分布影響的研究[J];中國電力;2014年05期

6 金相華;;現(xiàn)代電能質(zhì)量的基本問題[J];黑龍江科技信息;2014年01期

7 吳昊;許躍進(jìn);殷德聰;楊建;;含分布式電源配電網(wǎng)規(guī)劃的研究現(xiàn)狀及發(fā)展趨勢(shì)[J];電工電氣;2013年07期

8 許德志;汪飛;毛華龍;阮毅;張巍;;多并網(wǎng)逆變器與電網(wǎng)的諧波交互建模與分析[J];中國電機(jī)工程學(xué)報(bào);2013年12期

9 王平;高陽;王林泓;陳民鈾;許琴;熊蘭;;基于DSP與FPGA的實(shí)時(shí)電能質(zhì)量監(jiān)測(cè)終端系統(tǒng)[J];電力系統(tǒng)保護(hù)與控制;2012年12期

10 林莘;王娜;徐建源;;動(dòng)態(tài)電弧模型下特快速瞬態(tài)過電壓特性的計(jì)算與分析[J];中國電機(jī)工程學(xué)報(bào);2012年16期

，

本文編號(hào)：1620289