翟文超, 姚良忠, 喻恒凝, 徐箭, 李妍, 朱寰, 毛蓓琳. 面向并联环流最小化的垂直式矩阵型重力储能系统多机协调控制[J]. 全球能源互联网, 2024, 7(2): 155-165. DOI: 10.19705/j.cnki.issn2096-5125.2024.02.005
引用本文: 翟文超, 姚良忠, 喻恒凝, 徐箭, 李妍, 朱寰, 毛蓓琳. 面向并联环流最小化的垂直式矩阵型重力储能系统多机协调控制[J]. 全球能源互联网, 2024, 7(2): 155-165. DOI: 10.19705/j.cnki.issn2096-5125.2024.02.005
ZHAI Wenchao, YAO Liangzhong, YU Hengning, XU Jian, LI Yan, ZHU Huan, MAO Beilin. Multimachine Coordinated Control for Vertical Matrix Gravity Energy Storage System Considering Parallel Power Circulation Minimization[J]. Journal of Global Energy Interconnection, 2024, 7(2): 155-165. DOI: 10.19705/j.cnki.issn2096-5125.2024.02.005
Citation: ZHAI Wenchao, YAO Liangzhong, YU Hengning, XU Jian, LI Yan, ZHU Huan, MAO Beilin. Multimachine Coordinated Control for Vertical Matrix Gravity Energy Storage System Considering Parallel Power Circulation Minimization[J]. Journal of Global Energy Interconnection, 2024, 7(2): 155-165. DOI: 10.19705/j.cnki.issn2096-5125.2024.02.005

面向并联环流最小化的垂直式矩阵型重力储能系统多机协调控制

Multimachine Coordinated Control for Vertical Matrix Gravity Energy Storage System Considering Parallel Power Circulation Minimization

  • 摘要: 重力储能利用高度落差对固体重物储能介质进行升降,实现储能系统的充放电。和抽水蓄能相比,由于其具有不依赖水资源、选址灵活等特点,应用前景广泛。为提高重力储能系统的充放电运行效率,研究了面向多机并联功率环流最小化的垂直式矩阵型重力储能系统多机协调控制问题。首先,基于PSCAD/EMTDC构建垂直式矩阵型重力储能系统模型,分析了其充放电特性;其次,通过对重力储能系统多机并联运行时产生的机组间功率环流机理及抑制问题进行分析,提出了基于重力储能系统双层控制架构的多个机组间协调控制方法,该控制方法可在快速满足电网侧功率充放电需求的同时,实现并联运行机组间的功率环流最小化,提高了重力储能系统的充放电运行效率,最后,仿真结果验证了上述多机协调控制策略的有效性。

     

    Abstract: Gravity energy storage utilizes the height difference to lift and lower the solid heavy energy storage medium,achieving the charging and discharging of the energy storage system. Compared with pumped storage, it has a wide range of application prospects due to its lack of dependence on water resources and flexible site selection. To improve the charging and discharging operating efficiency of gravity energy storage systems, this article investigates the multi-machine coordinated control problem of a vertical matrix type gravity energy storage system, aiming at minimizing power circulation in parallel with multiple machines. Firstly, a vertical matrix gravity energy storage system model is constructed based on PSCAD/EMTDC,and its charging and discharging characteristics are analyzed.Secondly, a coordinated control method for multiple units based on the dual layer control architecture of gravity energy storage array is proposed by analyzing the power circulation mechanism and suppression problem generated by the parallel operation of multiple units in the gravity energy storage system. This method can quickly meet the power charging and discharging needs of the power grid while minimizing the power circulation between parallel operating units, improving the charging and discharging operating efficiency of the gravity energy storage system.Finally, the simulation results verify the effectiveness of the above multi machine coordinated control strategy.

     

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