分布式储能系统电流负荷动态分配方法研究

发布时间：2018-05-26 12:03

  本文选题：直流微电网 + 分布式储能系统　； 参考：《电力电子技术》2016年11期

【摘要】：为实现直流微电网内电流负荷在分布式储能系统(DESS)间的合理分配,克服传统下垂控制策略中电流分配精度低和母线电压跌落问题,提出一种适用于DESS的改进荷电状态(SOC)下垂控制策略。利用该策略可实现电流负荷在储能单元(ESU)的合理分配,避免ESU的过充过放;同时克服了线路阻抗对电流负荷分配的影响,实现了电流负荷的精确分配,且维持直流母线电压值恒定,从而保证了直流微电网的稳定性。最后对所提控制方法的有效性分别进行了仿真和实验验证。
[Abstract]:In order to realize the reasonable distribution of current load among distributed energy storage system (DESS) in DC microgrid, the problems of low precision of current distribution and voltage drop of busbar in traditional droop control strategy are overcome. An improved droop control strategy for DESS is proposed. This strategy can realize the reasonable distribution of current load in energy storage unit (ESUU), avoid overcharging and overdischarge of ESU, overcome the influence of line impedance on current load distribution, and realize the accurate distribution of current load. The DC bus voltage is kept constant, which ensures the stability of DC microgrid. Finally, the effectiveness of the proposed control method is verified by simulation and experiment.
【作者单位】： 燕山大学电气工程学院;
【基金】：国家自然科学基金(51477148)~~
【分类号】：TM732;TM46
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本文编号：1937168