【摘要】：直流微網(wǎng)系統(tǒng)由于具有能量轉(zhuǎn)換環(huán)節(jié)少，線路損耗小，，系統(tǒng)效率高，控制簡(jiǎn)單等優(yōu)點(diǎn)，已經(jīng)成為目前的研究熱點(diǎn)。儲(chǔ)能系統(tǒng)作為直流微電網(wǎng)的核心單元之一，對(duì)供電可靠性、電能質(zhì)量、可再生能源發(fā)電利用率等都起至關(guān)重要的作用。 本文以包含蓄電池儲(chǔ)能環(huán)節(jié)的直流微網(wǎng)系統(tǒng)作為研究對(duì)象，提出了一種保證系統(tǒng)經(jīng)濟(jì)運(yùn)行的基于直流母線電壓的自主式控制的一般性方法。該方法適用于沒(méi)有通信線路的直流微網(wǎng)系統(tǒng)控制方法的設(shè)計(jì)，利用該方法設(shè)計(jì)的控制策略能夠確保系統(tǒng)穩(wěn)定可靠運(yùn)行，并且優(yōu)化了系統(tǒng)的經(jīng)濟(jì)性能，并通過(guò)MATLAB/Simulink驗(yàn)證了該方法的有效性。 蓄電池是決定微網(wǎng)可靠運(yùn)行的關(guān)鍵環(huán)節(jié)。對(duì)蓄電池外特性進(jìn)行研究，建立其精確模型對(duì)于蓄電池單元的有效管理及增強(qiáng)微網(wǎng)系統(tǒng)可靠性非常關(guān)鍵，然而已有的蓄電池外特性模型不適用于微網(wǎng)系統(tǒng)控制方法的研究。本文搭建了蓄電池特性測(cè)試的實(shí)驗(yàn)平臺(tái)，在此基礎(chǔ)上，對(duì)鉛酸蓄電池的外特性展開(kāi)研究，提出了一種簡(jiǎn)單的電池外特性的建模方法，并建立了放電和充電電壓特性模型。該模型不僅能夠較準(zhǔn)確的反映電池電壓的非線性變化規(guī)律，而且可以準(zhǔn)確的估計(jì)電池的充放電狀態(tài)。 利用建立的蓄電池外特性模型對(duì)直流微網(wǎng)系統(tǒng)中蓄電池單元的控制方法進(jìn)行了優(yōu)化，簡(jiǎn)單的實(shí)現(xiàn)了電池的有效管理；對(duì)基于直流母線電壓的自主式控制方法進(jìn)行了完善，系統(tǒng)中增加了考慮蓄電池容量為有限的情況下的運(yùn)行模式。通過(guò)MATLAB/Simulink驗(yàn)證了優(yōu)化后的蓄電池的控制方法及基于蓄電池優(yōu)化控制的直流微網(wǎng)自主式控制方法的有效性。
[Abstract]:DC microgrid system has become a research hotspot because of its advantages of less energy conversion, less line loss, high system efficiency and simple control. As one of the core units of DC microgrid, energy storage system plays an important role in power supply reliability, power quality, renewable energy generation efficiency and so on. In this paper, the DC microgrid system which includes storage energy link of battery is taken as the research object, and a general method of independent control based on DC bus voltage is proposed to ensure the economical operation of the system. This method is suitable for the design of the control method of DC microgrid system without communication line. The control strategy designed by this method can ensure the stable and reliable operation of the system and optimize the economic performance of the system. The effectiveness of the method is verified by MATLAB/Simulink. Battery is the key to determine the reliable operation of microgrid. The research on the external characteristics of the battery is very important for the effective management of the battery unit and the enhancement of the reliability of the microgrid system. However, the existing models of the external characteristics of the battery are not suitable for the study of the control methods of the microgrid system. In this paper, an experimental platform for battery characteristic testing is built. On the basis of this, the external characteristics of lead-acid battery are studied, a simple modeling method of battery external characteristics is proposed, and a discharge and charging voltage characteristic model is established. The model can not only accurately reflect the nonlinear variation of the battery voltage, but also accurately estimate the charge and discharge state of the battery. The control method of the battery unit in the DC microgrid system is optimized by using the external characteristic model of the battery, and the effective management of the battery is realized simply. The autonomous control method based on DC bus voltage is improved, and the operation mode considering the limited capacity of battery is added in the system. The effectiveness of the optimized battery control method and the DC micro-grid autonomous control method based on the battery optimization control is verified by MATLAB/Simulink.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM912

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 施婕;鄭漳華;艾芊;;直流微電網(wǎng)建模與穩(wěn)定性分析[J];電力自動(dòng)化設(shè)備;2010年02期

2 印永華,郭劍波,趙建軍,卜廣全;美加“8.14”大停電事故初步分析以及應(yīng)吸取的教訓(xùn)[J];電網(wǎng)技術(shù);2003年10期

3 李成榕;呂玉珍;崔翔;杜小澤;程養(yǎng)春;王璋奇;艾欣;肖湘寧;;冰雪災(zāi)害條件下我國(guó)電網(wǎng)安全運(yùn)行面臨的問(wèn)題[J];電網(wǎng)技術(shù);2008年04期

4 于永清;李光范;李鵬;朱全軍;袁大陸;王承玉;李金忠;黃璜;李立新;張星海;劉敬民;;四川電網(wǎng)汶川地震電力設(shè)施受災(zāi)調(diào)研分析[J];電網(wǎng)技術(shù);2008年11期

5 黃偉;孫昶輝;吳子平;張建華;;含分布式發(fā)電系統(tǒng)的微網(wǎng)技術(shù)研究綜述[J];電網(wǎng)技術(shù);2009年09期

6 池海濤;吳俊宏;艾芊;;含儲(chǔ)能裝置的直流微電網(wǎng)控制系統(tǒng)研究[J];低壓電器;2009年22期

7 王曉虹;艾芊;;直流微電網(wǎng)在配電系統(tǒng)中的研究現(xiàn)狀與前景[J];低壓電器;2012年05期

8 徐偉華,艾芊,周玉光,凌曉波,王偉,章啟明,陳陳;莫斯科5·25大停電對(duì)中國(guó)電力市場(chǎng)發(fā)展的啟示[J];華東電力;2005年07期

9 茆美琴 ,余世杰 ,蘇建徽;帶有MPPT功能的光伏陣列Matlab通用仿真模型[J];系統(tǒng)仿真學(xué)報(bào);2005年05期

10 朱雄世;;國(guó)外數(shù)據(jù)通信設(shè)備高壓直流供電新系統(tǒng)(下)[J];郵電設(shè)計(jì)技術(shù);2009年05期

本文編號(hào)：2378144