【摘要】：現(xiàn)在全球經(jīng)濟處于快速增長期,人類對能源的消耗和需求日益加劇,常規(guī)能源如石油、天然氣、煤炭等面臨枯竭的危險。因此,取之不盡用之不竭的太陽能成為各國能源發(fā)展日益重視的能源之一。太陽能以分布式電源的形式加入大電網(wǎng)。但太陽能發(fā)電受環(huán)境的影響較大,具有間歇性、隨機性等特點,對大電網(wǎng)產(chǎn)生巨大沖擊和影響。為了解決上述問題,將光伏發(fā)電等分布式電源以及負(fù)載組成微電網(wǎng),進行集中管理。目前,微電網(wǎng)的研究主要集中于交流微電網(wǎng)方面。但隨著大量直流微源的出現(xiàn),以及對直流功率需求的提高,直流微電網(wǎng)逐漸得到了人們的重視。論文工作主要如下:1、對直流微電網(wǎng)系統(tǒng)內(nèi)各微源及相應(yīng)的變換器展開了工作原理的研究、數(shù)學(xué)建模及仿真。實現(xiàn)了太陽能光伏電池板的建模與仿真。對蓄電池的內(nèi)部特性和工作原理進行了基本分析,以及蓄電池的數(shù)學(xué)建模及仿真。2、對電力電子變換器即雙向DC/DC變換器進行了深入研究。3、研究了孤島狀態(tài)下的微源并聯(lián)運行控制。介紹了直流微電網(wǎng)的控制模式:主從控制和對等控制。在詳細(xì)研究主從控制策略和下垂控制策略的基礎(chǔ)上,提出了基于自調(diào)節(jié)下垂系數(shù)的直流微電網(wǎng)多重主從控制策略。并且詳細(xì)分析了恒流控制、恒壓控制、下垂控制的控制方法。4、在MAILAB/Simulink仿真環(huán)境下驗證了直流微電網(wǎng)各微源運行控制策略的有效性。在仿真建模的基礎(chǔ)上搭建了低壓直流微電網(wǎng)系統(tǒng)實驗平臺,驗證了上述的運行控制方法。
[Abstract]:Now the global economy is in a period of rapid growth, human consumption and demand for energy is increasing, conventional energy sources such as oil, natural gas, coal and so on are in danger of drying up. Therefore, the inexhaustible solar energy has become one of the most important energy sources in various countries. Solar energy is added to large power grids in the form of distributed power sources. However, solar power generation is greatly affected by the environment and has the characteristics of intermittence and randomness, which has a great impact and influence on the large power grid. In order to solve the above problems, the distributed power generation and load such as photovoltaic generation are formed into microgrid, and centralized management is carried out. At present, the research of microgrid mainly focuses on AC microgrid. However, with the emergence of a large number of DC microsources and the improvement of the demand for DC power, the DC microgrid has been paid more and more attention. The main work of this paper is as follows: 1. The working principle, mathematical modeling and simulation of the microsources and the corresponding converters in the DC microgrid system are studied. The modeling and simulation of solar photovoltaic panels are realized. The internal characteristics and working principle of the battery are analyzed, and the mathematical modeling and simulation of the battery. The power electronic converter, that is, the bi-directional DC/DC converter, is studied in depth. The microsource parallel operation control in the isolated island state is studied. This paper introduces the control mode of DC microgrid: master-slave control and peer-to-peer control. Based on the detailed study of master-slave control strategy and droop control strategy, a multi-master-slave control strategy for DC microgrid based on self-regulating sag coefficient is proposed. The control methods of constant current control, constant voltage control and droop control are analyzed in detail. The effectiveness of the operation control strategy of each micro-source in DC microgrid is verified under the MAILAB/Simulink simulation environment. On the basis of simulation and modeling, the experiment platform of low voltage DC microgrid system is built, and the operation control method mentioned above is verified.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM727

【參考文獻】

相關(guān)期刊論文 前10條

1 朱曉榮;蔡杰;;多儲能直流微電網(wǎng)的分布式控制[J];現(xiàn)代電力;2016年02期

2 支娜;張輝;肖曦;楊甲甲;;分布式控制的直流微電網(wǎng)系統(tǒng)級穩(wěn)定性分析[J];中國電機工程學(xué)報;2016年02期

3 朱曉榮;蔡杰;王毅;馮亞東;胡仙來;;風(fēng)儲直流微網(wǎng)虛擬慣性控制技術(shù)[J];中國電機工程學(xué)報;2016年01期

4 楊捷;金新民;吳學(xué)智;江晨;;一種適用于直流微電網(wǎng)的改進型電流負(fù)荷分配控制策略[J];中國電機工程學(xué)報;2016年01期

5 李霞林;郭力;王成山;李運帷;;直流微電網(wǎng)關(guān)鍵技術(shù)研究綜述[J];中國電機工程學(xué)報;2016年01期

6 馬中靜;姜文材;;一種應(yīng)用于直流微電網(wǎng)的改進型下垂控制策略[J];電力電子技術(shù);2015年09期

7 呂振宇;吳在軍;竇曉波;胡敏強;趙波;;基于離散一致性的孤立直流微網(wǎng)自適應(yīng)下垂控制[J];中國電機工程學(xué)報;2015年17期

8 文波;秦文萍;韓肖清;王鵬;劉家贏;;基于電壓下垂法的直流微電網(wǎng)混合儲能系統(tǒng)控制策略[J];電網(wǎng)技術(shù);2015年04期

9 劉家贏;韓肖清;王磊;張鵬;王靖;;直流微電網(wǎng)運行控制策略[J];電網(wǎng)技術(shù);2014年09期

10 王成山;武震;李鵬;;微電網(wǎng)關(guān)鍵技術(shù)研究[J];電工技術(shù)學(xué)報;2014年02期

，

本文編號：2211626