【摘要】：微電網(wǎng)將分布式電源、負荷和大電網(wǎng)相結合，提高了間歇式可再生能源如光伏、風能的利用率和電力系統(tǒng)的靈活性。但微電網(wǎng)并網(wǎng)運行對大電網(wǎng)安全運行會有危害，因此儲能技術的引入可以平滑間歇性微源功率上的波動。在眾多類型儲能系統(tǒng)中，全釩液流電池（簡稱釩電池）具有壽命長、效率高等優(yōu)點而備受關注，目前釩電池應用于兆瓦級風力電站調節(jié)功率的研究較多，隨著國家鼓勵單位家庭使用分布式發(fā)電，與此對應的中小功率微電網(wǎng)系統(tǒng)功率調節(jié)研究將越來越重要。基于此，本文圍繞釩電池儲能系統(tǒng)，結合電網(wǎng)友好型控制策略，對并網(wǎng)微電網(wǎng)系統(tǒng)展開研究，其研究成果對釩電池在中小型微電網(wǎng)中的應用具有重要現(xiàn)實意義。 本文主要創(chuàng)新點包括： ①對現(xiàn)有的儲能系統(tǒng)、微電網(wǎng)控制方法進行深入研究分析，分析釩電池優(yōu)勢，提出在帶釩電池儲能的并網(wǎng)微電網(wǎng)系統(tǒng)中引入電網(wǎng)友好型控制策略，將間歇性微源以最大功率輸出，對單相釩電池儲能系統(tǒng)進行有功和無功功率控制，采用仿真法優(yōu)化配置儲能系統(tǒng)容量，，來平滑微電網(wǎng)和外部電網(wǎng)的功率波動。 ②現(xiàn)階段釩電池儲能的微電網(wǎng)系統(tǒng)相關研究大多停留在理論研究階段，實驗分析較少，本文從實際工程出發(fā)設計出10KW帶釩電池儲能的微電網(wǎng)系統(tǒng)，并在實驗系統(tǒng)中驗證所提出策略的可行性，解決了釩電池儲能用于中小型微電網(wǎng)系統(tǒng)的有功和無功調節(jié)問題，為釩電池在中小型微電網(wǎng)中的推廣和應用奠定了一定的實際應用基礎。
[Abstract]:The combination of distributed generation, load and large power grid improves the utilization rate of intermittent renewable energy such as photovoltaic, wind energy and the flexibility of power system. However, grid-connected operation of microgrid is harmful to the safe operation of large power grid, so the introduction of energy storage technology can smooth the fluctuation of intermittent micro-source power. Among the many types of energy storage systems, vanadium liquid flow batteries (VLFCs) have many advantages, such as long life, high efficiency and so on. At present, vanadium batteries are widely used in regulating power of megawatt wind power plants. With the government encouraging the unit and household to use distributed power generation, the research on power regulation of small and medium power microgrid system will become more and more important. Based on this, this paper focuses on the vanadium battery energy storage system, combined with the grid friendly control strategy, research on grid-connected microgrid system, its research results have important practical significance for the application of vanadium battery in small and medium-sized microgrid. The main innovations of this paper are as follows: (1) the existing energy storage system and microgrid control methods are deeply studied and analyzed, and the advantages of vanadium battery are analyzed. A grid-friendly control strategy is proposed in the grid-connected microgrid system with vanadium battery energy storage. The intermittent micro-source is output with maximum power to control the active and reactive power of the single-phase vanadium battery energy storage system. The simulation method is used to optimize the configuration of energy storage system capacity to smooth the power fluctuation between microgrid and external power grid. 2 at this stage, most of the research on vanadium battery energy storage microgrid system remains at the stage of theoretical research, but the experimental analysis is less. In this paper, the 10KW microgrid system with vanadium battery energy storage is designed from the practical engineering. The feasibility of the proposed strategy is verified in the experimental system, and the active and reactive power regulation problem of the vanadium battery energy storage system for the medium and small microgrid system is solved. It lays a foundation for the application of vanadium battery in medium and small microgrid.
【學位授予單位】：武漢科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM912

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