交直流混合微电网微元建模与控制

发布时间：2018-01-15 02:07

本文关键词：交直流混合微电网微元建模与控制　出处：《电力系统保护与控制》2017年21期 　论文类型：期刊论文

【摘要】：随着直流负荷的增多,传统的交流微电网已经不能满足系统负载多样性及经济性等方面的需求,交直流混合微电网逐步成为研究热点和难点。仿真研究中,分布式发电(Distributed Generation,DG)的随机性、时变性和非线性化特性,使得混合微电网中DG的建模和算法实现比较困难,DG与储能之间的协调控制亦是一个难题。为此,基于实际工程需求搭建了一种包含直流大电网的交直流混合微电网的系统结构,提出了相应元件的物理模型与控制策略,并在仿真平台下着重模拟了各微元在不同工况下的协同运行。仿真结果表明,所提出的交直流混合微电网结构合理,各元件的控制策略和性能良好,且整个系统具有较快的响应速度,很好地满足了系统安全稳定性要求。
[Abstract]:With the increase of DC load, the traditional AC micro grid system load has been unable to meet the diversity and economic aspects of the demand, AC-DC hybrid microgrid has gradually become a research hotspot and difficulty. In the simulation research of distributed generation (Distributed, Generation, DG) random, time-varying and nonlinear characteristics of the Hybrid Micro modeling and algorithm of DG network is difficult to realize, coordinated control between DG and energy storage is also a problem. Therefore, to build a hybrid AC / DC power grid includes DC microgrid system structure based on the actual engineering requirements, this paper presents a physical model and the corresponding control strategy and simulation components. The platform focuses on Simulation of the coordinated operation of each element in different conditions. The simulation results show that the proposed hybrid AC / DC micro grid structure, control strategy and performance of each element is good, and The whole system has a fast response speed, and it meets the requirements of the security and stability of the system.

【作者单位】：许继集团有限公司;国网山西省电力公司;
【基金】：国家电网科技项目“适应不同应用场景的分布式电源接入装备关键技术研究”(SGXJ0000KJJS1601515)
【分类号】：TM727
【正文快照】： 与传统能源相比,以太阳能、风能和生物能等为代表的新能源具有清洁无污染、能源利用率高、经济性能好和可持续发展的优势,代表着未来电力行业的一个重要方向[1]。以新能源为基础的分布式发电形式多样灵活,在一定程度上缓解了电力系统中的负荷压力,并且可以作为大电网的备用电

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