陈晓雯, 李奇, 蒲雨辰, 阳洋, 李荦一, 陈维荣. 基于等效氢耗特征的孤岛电–氢混合储能多微电网功率自适应分配控制方法研究[J]. 电网技术, 2023, 47(3): 896-907. DOI: 10.13335/j.1000-3673.pst.2021.2396
引用本文: 陈晓雯, 李奇, 蒲雨辰, 阳洋, 李荦一, 陈维荣. 基于等效氢耗特征的孤岛电–氢混合储能多微电网功率自适应分配控制方法研究[J]. 电网技术, 2023, 47(3): 896-907. DOI: 10.13335/j.1000-3673.pst.2021.2396
CHEN Xiaowen, LI Qi, PU Yuchen, YANG Yang, LI Luoyi, CHEN Weirong. Power Adaptive Distribution Control of Isolated Multi-microgrids Containing Electric-hydrogen Hybrid Energy Storage Based on Equivalent Hydrogen Consumption Characteristics[J]. Power System Technology, 2023, 47(3): 896-907. DOI: 10.13335/j.1000-3673.pst.2021.2396
Citation: CHEN Xiaowen, LI Qi, PU Yuchen, YANG Yang, LI Luoyi, CHEN Weirong. Power Adaptive Distribution Control of Isolated Multi-microgrids Containing Electric-hydrogen Hybrid Energy Storage Based on Equivalent Hydrogen Consumption Characteristics[J]. Power System Technology, 2023, 47(3): 896-907. DOI: 10.13335/j.1000-3673.pst.2021.2396

基于等效氢耗特征的孤岛电–氢混合储能多微电网功率自适应分配控制方法研究

Power Adaptive Distribution Control of Isolated Multi-microgrids Containing Electric-hydrogen Hybrid Energy Storage Based on Equivalent Hydrogen Consumption Characteristics

  • 摘要: 在含电–氢混合储能系统的复杂多微电网中,为解决不同规模及类型微源所导致的公共负荷难以合理分配进而使交流母线电压频率失稳的问题,提出了一种基于等效氢耗的孤岛复杂多微电网功率分配自适应控制方法。该方法将微电网内不同微源承载能力等效为氢耗,统一评估不同微电网的载荷裕量,并根据实际微源的动态特性和运行机理自适应改变多虚拟同步发电机(virtual synchronous generator,VSG)一次调频分配系数,实现了通过分布式控制对公共负荷的实时合理分配。此外,所提出的VSG自适应控制方法通过识别频率变化快慢,使转动惯量和阻尼系数协同自适应控制。实现了减小频率波动超调量的同时提高系统的响应速度。最后,开展半实物实验,对所提方法的有效性进行了验证。

     

    Abstract: In complex multi-microgrids containing electric and hydrogen energy storage systems, there are different sizes and types of micro-sources, which makes it difficult to distribute the common load reasonably and further leads to the instability of the AC bus voltage frequency. In this paper, an adaptive control method for power distribution in the isolated complex multi-microgrids based on the equivalent hydrogen consumption is proposed. To uniformly evaluate the load margins of different microgrids, different micro sources within the microgrid are evaluated by the equivalent hydrogen consumption. In addition, the primary frequency modulation (FM) allocation coefficients of the multiple Virtual Synchronous Generators (VSG) are adaptively changed according to the dynamic characteristics and operating mechanisms of the actual micro sources, achieving a reasonable allocation of the common load in the real time by the distributed control. Next, the VSG adaptive control method proposed in this paper makes the rotational inertia and the damping coefficient adaptively controlled by identifying how fast the frequency changes, realizing the reduction of the frequency fluctuation overshoot while improving the response speed of the system. Finally, semi-physical experiments are carried out to verify the effectiveness of the proposed method.

     

/

返回文章
返回