基于钒电池储能的并网微电网系统设计
发布时间：2018-10-13 20:18
【摘要】：微电网将分布式电源、负荷和大电网相结合，提高了间歇式可再生能源如光伏、风能的利用率和电力系统的灵活性。但微电网并网运行对大电网安全运行会有危害，因此储能技术的引入可以平滑间歇性微源功率上的波动。在众多类型储能系统中，全钒液流电池（简称钒电池）具有寿命长、效率高等优点而备受关注，目前钒电池应用于兆瓦级风力电站调节功率的研究较多，随着国家鼓励单位家庭使用分布式发电，与此对应的中小功率微电网系统功率调节研究将越来越重要。基于此，本文围绕钒电池储能系统，结合电网友好型控制策略，对并网微电网系统展开研究，其研究成果对钒电池在中小型微电网中的应用具有重要现实意义。 本文主要创新点包括： ①对现有的储能系统、微电网控制方法进行深入研究分析，分析钒电池优势，提出在带钒电池储能的并网微电网系统中引入电网友好型控制策略，将间歇性微源以最大功率输出，对单相钒电池储能系统进行有功和无功功率控制，采用仿真法优化配置储能系统容量，，来平滑微电网和外部电网的功率波动。 ②现阶段钒电池储能的微电网系统相关研究大多停留在理论研究阶段，实验分析较少，本文从实际工程出发设计出10KW带钒电池储能的微电网系统，并在实验系统中验证所提出策略的可行性，解决了钒电池储能用于中小型微电网系统的有功和无功调节问题，为钒电池在中小型微电网中的推广和应用奠定了一定的实际应用基础。
[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.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM912
本文编号：2269776
[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.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM912
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