齐坤, 朱志宇. 基于混合储能的船舶电力系统功率波动平抑控制策略[J]. 中国舰船研究, 2021, 16(4): 190–198. doi: 10.19693/j.issn.1673-3185.02006
引用本文: 齐坤, 朱志宇. 基于混合储能的船舶电力系统功率波动平抑控制策略[J]. 中国舰船研究, 2021, 16(4): 190–198. doi: 10.19693/j.issn.1673-3185.02006
QI K, ZHU Z Y. Power fluctuation control strategy of ship power system based on hybrid energy storage system[J]. Chinese Journal of Ship Research, 2021, 16(4): 190–198. doi: 10.19693/j.issn.1673-3185.02006
Citation: QI K, ZHU Z Y. Power fluctuation control strategy of ship power system based on hybrid energy storage system[J]. Chinese Journal of Ship Research, 2021, 16(4): 190–198. doi: 10.19693/j.issn.1673-3185.02006

基于混合储能的船舶电力系统功率波动平抑控制策略

Power fluctuation control strategy of ship power system based on hybrid energy storage system

  • 摘要:
      目的  针对船舶电力系统在负载功率剧烈波动时的电网电能质量下降和储能装置功率分配问题,提出一种基于蓄电池与超级电容混合储能的船舶电力系统功率波动平抑控制策略。
      方法  首先,基于低通滤波算法,将船舶电力系统的功率波动以其波动频率初步分配到相应的储能单元;然后,基于下垂控制策略,根据分配功率调整各个储能单元的输出电流;最后,基于各个储能单元的荷电状态,开展混合储能系统的充放电控制,以平抑功率波动。
      结果  Simulink仿真结果表明,该功率分配策略实现了储能单元之间的功率合理分配,以及储能系统的充放电功率控制,可以有效平抑船舶电力系统的负载功率波动。
      结论  研究成果可为船舶电网电能质量的优化设计提供参考。

     

    Abstract:
      Objective  Aiming at the problems of the power quality degradation of the power grid and the power distribution of energy storage devices when the load power of a ship power system fluctuates sharply, a power fluctuation control strategy based on the hybrid energy storage of batteries and supercapacitors is proposed.
      Methods  First, based on the low-pass filtering algorithm, the power fluctuation of the ship's power system is initially allocated to the corresponding energy storage unit according to its fluctuation frequency. Then, based on the droop control strategy, the output current of each energy storage unit is adjusted according to the allocated power. Finally, based on the state of charge of each energy storage unit, the charge and discharge control of the hybrid energy storage system is conducted to smooth out the power fluctuations.
      Results  The simulation results show that this power distribution strategy realizes the reasonable distribution of power between energy storage units and the charge and discharge power control of the energy storage system, which can effectively smooth out the load power fluctuations of the ship's power system.
      Conclusion  The results of this study can provide valuable references for the optimal power quality design of a ship's power grid.

     

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