電池柔性成組儲能系統(tǒng)監(jiān)控平臺和系統(tǒng)控制
[Abstract]:In recent years, the proportion of new energy generation, such as wind energy and solar energy, has gradually increased in China's power system, and the corresponding battery energy storage system has also attracted wide attention. In the traditional Li-ion battery energy storage system, a large number of single-cell batteries need to be serially connected to the converter. When the cell capacity, internal resistance and other parameters in the battery pack are inconsistent, it will lead to the mutual restriction of each other in the process of use, and the energy utilization ratio of the battery pack will be greatly reduced. In order to solve this problem, the flexible battery group technology is deeply studied in this paper, that is, the battery pack with hundreds of monomers in series is divided into several low-voltage battery modules. The multilevel converters are flexible to improve the service life of the energy storage system and the overall energy efficiency of the battery. This paper focuses on the basic principle of flexible group energy storage system, system control and monitoring platform. Firstly, this paper analyzes the problems and causes of traditional battery grouping, introduces the concept of flexible battery grouping, discusses its principle and technical characteristics, and expounds the composition of flexible group energy storage system. The topology of different converters which can be used in flexible groups of batteries is compared and analyzed. Finally, H-bridge cascaded energy storage converter is chosen as the main circuit topology in this paper. On the basis of the above, the system control of the energy storage converter based on the flexible group technology of battery is studied in depth. Firstly, the modulation strategy and the basic control strategy are described. Then the equilibrium control strategy of flexible group energy storage system is analyzed. From the angle of interphase equalization and intra-phase equalization, the equalization control strategies of SOC equalization and voltage equalization are discussed, and combined with the research background of the current retrograde battery ladder used in energy storage system. A SOC equalization control strategy based on different capacity battery modules is proposed. The monitoring platform of flexible group energy storage system is also built in this paper. The man-machine interface of the host computer is designed by using the LabVIEW development environment of NI Company. Under the premise of making full use of the existing equipment in the laboratory, the paper combines the CAN communication and TCP communication technology. Realize the joint real-time monitoring of 24 battery modules in 3-phase. Each battery module monitoring program is designed by modularization, including real-time display, real-time storage, data transceiver, data processing, real-time data dynamic call and so on. The results of the system monitoring platform are given. Finally, this paper presents the modulation strategy, basic control strategy and system equalization control of flexible group energy storage system, including SOC equalization, voltage equalization and simulation analysis of equalization control strategy based on different capacity battery. The SOC equalization control and voltage equalization control are tested and analyzed on the prototype of the flexible group energy storage system in the laboratory.
【學位授予單位】:北京交通大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM912;TM46
【參考文獻】
相關期刊論文 前10條
1 申科;王建賾;班明飛;紀延超;蔡興國;;基于零序電壓注入的模塊化多電平變流器故障容錯控制[J];電力系統(tǒng)自動化;2014年05期
2 薛金花;葉季蕾;張宇;時珊珊;樸紅艷;;儲能系統(tǒng)中電池成組技術及應用現狀[J];電源技術;2013年11期
3 丁明;陳忠;蘇建徽;陳中;吳建鋒;朱承治;;可再生能源發(fā)電中的電池儲能系統(tǒng)綜述[J];電力系統(tǒng)自動化;2013年01期
4 趙巖;鄭斌毅;賀之淵;;南匯柔性直流輸電示范工程的控制方式和運行性能[J];南方電網技術;2012年06期
5 劉霞;江全元;;風光儲混合系統(tǒng)的協(xié)調優(yōu)化控制[J];電力系統(tǒng)自動化;2012年14期
6 李騰;林成濤;陳全世;;磷酸鐵鋰電池組成組過程的不一致性分析[J];清華大學學報(自然科學版);2012年07期
7 溫珊林;;中國大規(guī)模儲能研發(fā)和應用綜述[J];電器工業(yè);2012年04期
8 伍嬋娟;;電力儲能技術發(fā)展概述[J];電工技術;2011年02期
9 李戰(zhàn)鷹;胡玉峰;吳俊陽;;大容量電池儲能系統(tǒng)PCS拓撲結構研究[J];南方電網技術;2010年05期
10 黃碧霞;陳陽生;;一種三相逆變器損耗分析方法[J];微電機;2009年09期
相關會議論文 前1條
1 吳福保;楊波;葉季蕾;薛金花;;大容量電池儲能系統(tǒng)的應用及典型設計[A];第十三屆中國科協(xié)年會第15分會場-大規(guī)模儲能技術的發(fā)展與應用研討會論文集[C];2011年
相關碩士學位論文 前10條
1 趙宇;基于電池柔性成組技術的儲能變流器研究[D];北京交通大學;2016年
2 王路石;級聯(lián)型儲能變流器的設計與研制[D];北方工業(yè)大學;2015年
3 耿俊利;級聯(lián)型多電平逆變器及控制策略研究[D];北京交通大學;2015年
4 艾洪克;用于光伏電站的組合級聯(lián)式電池儲能系統(tǒng)的控制研究[D];北京交通大學;2015年
5 曹生允;電池儲能的兩級式功率變換系統(tǒng)研究[D];廣西大學;2014年
6 晁剛;級聯(lián)H橋儲能系統(tǒng)研究與設計[D];上海交通大學;2013年
7 姜君;鋰離子電池串并聯(lián)成組優(yōu)化研究[D];北京交通大學;2013年
8 申斐斐;模塊化多電平變流器控制系統(tǒng)的研究[D];浙江大學;2012年
9 牛賽;儲能技術研究及其在智能電網中的應用[D];鄭州大學;2011年
10 楊娟;基于數字控制的雙向DC/DC儲能變流器的研究[D];華北電力大學(北京);2011年
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