基于虚拟储能的微网能量优化管理与控制

发布时间：2018-03-14 09:57

本文选题：微网　切入点：虚拟储能　出处：《东华大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着新能源技术和互联网技术为代表的第三次工业革命的兴起,新能源的开发和利用成为了能源领域备受关注的话题。为了更大限度的接纳分布式可再生能源,微电网的应用范围越来越广泛,并且日益体现出其良好的综合效益和市场前景。微电网能够有效集成各类分布式清洁能源,实现可靠、灵活、经济供电。其能量管理是微网研究中的重要一环,合理的能量管理与集成控制提高了整个微网系统的能源利用率、经济性和稳定性,达到实现微网系统的自我保护和自我管理的目的。储能系统对于微网的能量平衡起着至关重要的作用。本文将采用虚拟储能的概念,将储能系统的范围扩展至需求侧的可控负荷范畴,进一步对微网的能量管理与控制展开具体研究。主要内容如下:1.介绍了微网的基本概念以及关键技术,阐述了微网能量管理系统的基本功能及其重要的研究内容,针对风光储微网系统建立了稳态仿真模型,包含了风力发电机组、光伏阵列、蓄电池以及温控负荷的数学模型,为后续制定能量管理策略的研究奠定了模型基础。2.针对独立运行的风光储微网系统提出了基于虚拟储能的能量管理策略。定义了系统中的虚拟储能,通过需求侧负荷管理,将温控负荷的运行时间和运行时长、可转移负荷的运行时间随着风电机组和光伏阵列的出力的变化而灵活地调节,不仅能够最大化利用风光出力,而且利用温控负荷的蓄冷蓄热特性,能够对风光发电的出力能量起到缓冲作用,降低微网系统对储能容量的需求。3.针对并网运行的微网系统,在独立风光储微网系统的研究基础上,加入分时电价策略,配合大电网的电价信息,制定适合并网运行的微网系统的能量管理策略,在满足用户舒适度的前提下,以从电网购电费用最低为目标进行了算例仿真。结果表明所提的策略经济性更优且降低了对储能系统的容量配置需求。4.最后,对所做的工作进行了总结,并提出了需进一步研究的方向。
[Abstract]:With the rise of the third industrial revolution represented by new energy technology and Internet technology, the development and utilization of new energy has become a topic of great concern in the field of energy. The application scope of microgrid is more and more extensive, and more and more reflect its good comprehensive benefit and market prospect. Microgrid can effectively integrate all kinds of distributed clean energy, and realize reliable and flexible. Economic power supply. Its energy management is an important part of microgrid research. Reasonable energy management and integrated control improve the energy efficiency, economy and stability of the whole microgrid system. To achieve the goal of self-protection and self-management of microgrid system, energy storage system plays an important role in the energy balance of microgrid. In this paper, the concept of virtual energy storage is adopted. The scope of the energy storage system is extended to the scope of controllable load on the demand side, and the detailed research on the energy management and control of the microgrid is carried out. The main contents are as follows: 1. The basic concepts and key technologies of the microgrid are introduced. The basic functions and important research contents of the microgrid energy management system are described. A steady state simulation model is established for the wind energy storage system, which includes the mathematical models of wind turbine, photovoltaic array, storage battery and temperature control load. It lays a model foundation for the further study of energy management strategy. 2. A virtual energy management strategy based on virtual energy storage is proposed for the independently running solar microgrid system. The virtual energy storage strategy in the system is defined, and the demand side load management is adopted. The operating time and the running time of the temperature controlled load and the transferable load can be adjusted flexibly with the change of the wind turbine and the photovoltaic array, which can not only maximize the utilization of the wind power, but also the energy of the photovoltaic array. Moreover, by using the characteristic of temperature controlled load, it can buffer the output energy of wind power generation, and reduce the requirement of energy storage capacity of microgrid system. On the basis of the research of the independent solar microgrid system, the time-sharing pricing strategy is added, and the energy management strategy of the microgrid system suitable for grid-connected operation is formulated in accordance with the electricity price information of the large power grid. Under the premise of satisfying the comfort of the users, the energy management strategy of the micro-grid system is formulated. The simulation results show that the proposed strategy is more economical and reduces the capacity configuration requirement of energy storage system. Finally, the work done is summarized. The direction of further research is also put forward.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73

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