直流船舶综合电力系统中混合储能的精确功率分配策略研究

直流船舶综合电力系统是未来船舶的重要发展趋势，可实现全船能源的集中控制和管理。确保船载直流微电网中各分布式电源间的精确功率分配以及母线电压稳定是维持系统安全、经济运行的先决条件。因此，提出一种基于二次规划算法的精确功率分配方法，该方法充分考虑混合储能系统中不同储能介质的额定容量、荷电状态、爬坡速率以及充放电效率的差异，旨在保证系统稳定性的前提下，实现调压成本最小化。具体而言，其通过直流母线电压波动值确定目标功率，采用二次规划算法将目标功率值在混合储能间进行合理分配，从而以最小成本维持母线电压在允许范围内。最后，通过两个实时仿真研究案例验证了所提控制方法的有效性。

Research on Accurate Power Distribution Strategy for Hybrid Energy Storage in DC Shipboard Integrated Power System

The DC shipboard integrated power system is an important development trend of future ships to realize centralized control and management of energy. Ensuring accurate power distribution among distributed power sources and maintaining the stability of DC bus voltage are prerequisites to run system in security and economy. Therefore, an accurate power distribution method based on quadratic programming algorithm is proposed. That method aims at minimizing the cost of voltage regulation under the premise of ensuring system stability considering the rated capacity, state of charge, ramp rate, and efficiency of different energy storage media. In detail, target power is determined by DC bus voltage deviation, and further distributed in the hybrid energy storage system by quadratic programming accurately, so as to maintain the DC bus voltage within the desired range at a minimum cost. Finally, two real-time simulation study cases are illustrated to verify the effectiveness of the proposed control method.