基于AC-DC混合微网的能量管理方法的仿真研究
发布时间：2018-08-22 17:31
【摘要】：微网作为解决在电力系统中利用分布式电源存在问题的有效方式受到了广泛研究。本文研究了一种带有电路切换机构的基于交直流混合微网的能量管理系统,并设计了相应的能量管理方法。本文的主要工作内容如下:(1)研究了一种带有电路切换机构的基于交直流混合微网的能量管理系统,同时结合了交流微网和直流微网的优势,在直流微网内对分布式电源进行整合管理,在交流微网内实施负荷侧管理控制。本文提出的系统由于在交流微网内配置用于负荷控制的开关阵列,从而相较于其他微网系统多出一种工作模式,使得该能量管理系统工作方式更加灵活。(2)建立了能量管理系统的整体模型。能量管理系统集成了分布式电源、储能单元、交直流功率变换器、负荷等多种组件,系统的整体模型便由上述组件模型联立获得。(3)针对能量管理系统的不同工作模式,为了维持系统的功率平衡,保证系统正常运行,本文设计了相应的能量管理方法。针对不同工作模式下系统功率平衡方程,系统控制中心控制系统各组件的协调配合。然后在仿真环境中对能量管理方法进行了仿真验证。研究结果表明,带有电路切换机构的基于交直流混合微网的能量管理方法在系统稳定运行的情况下能够实现分布式电源高效率的整合利用和负荷侧的负荷控制,通过开关切换可以自主的进行需求侧管理。
[Abstract]:As an effective way to solve the problem of distributed power generation in power system, microgrid has been widely studied. In this paper, an energy management system based on AC / DC hybrid microgrid with circuit switching mechanism is studied, and the corresponding energy management method is designed. The main work of this paper is as follows: (1) an energy management system based on AC / DC hybrid microgrid with circuit switching mechanism is studied, which combines the advantages of AC microgrid and DC microgrid. Distributed power supply is integrated in DC microgrid and load side management is implemented in AC microgrid. In this paper, the switching array for load control is arranged in the AC microgrid, which has one more working mode than other microgrid systems. It makes the energy management system more flexible. (2) the overall model of the energy management system is established. The energy management system integrates distributed power generation, energy storage unit, AC / DC power converter, load and other components, and the whole model of the system is obtained by the above component model. (3) aiming at the different working modes of the energy management system, In order to maintain the power balance of the system and ensure the normal operation of the system, a corresponding energy management method is designed in this paper. According to the system power balance equations under different working modes, the coordination of the components of the system control center is presented. Then, the energy management method is simulated and verified in the simulation environment. The results show that the energy management method based on AC / DC hybrid microgrid with circuit switching mechanism can realize high efficiency integration of distributed power supply and load control of load side under the condition of stable operation of the system. Demand side management can be done independently through switch switching.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73
[Abstract]:As an effective way to solve the problem of distributed power generation in power system, microgrid has been widely studied. In this paper, an energy management system based on AC / DC hybrid microgrid with circuit switching mechanism is studied, and the corresponding energy management method is designed. The main work of this paper is as follows: (1) an energy management system based on AC / DC hybrid microgrid with circuit switching mechanism is studied, which combines the advantages of AC microgrid and DC microgrid. Distributed power supply is integrated in DC microgrid and load side management is implemented in AC microgrid. In this paper, the switching array for load control is arranged in the AC microgrid, which has one more working mode than other microgrid systems. It makes the energy management system more flexible. (2) the overall model of the energy management system is established. The energy management system integrates distributed power generation, energy storage unit, AC / DC power converter, load and other components, and the whole model of the system is obtained by the above component model. (3) aiming at the different working modes of the energy management system, In order to maintain the power balance of the system and ensure the normal operation of the system, a corresponding energy management method is designed in this paper. According to the system power balance equations under different working modes, the coordination of the components of the system control center is presented. Then, the energy management method is simulated and verified in the simulation environment. The results show that the energy management method based on AC / DC hybrid microgrid with circuit switching mechanism can realize high efficiency integration of distributed power supply and load control of load side under the condition of stable operation of the system. Demand side management can be done independently through switch switching.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73
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本文编号：2197814
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