【摘要】 为有效抑制船用光伏输出功率的波动性,提高光伏在船舶电网中的渗透率,文章在储能模块平抑光伏功率波动的场景下,以“中远腾飞”轮为研究对象,将模型预测控制(MPC)理论应用于船用光储发电系统研究中,利用储能充放电实现双向功率控制。首先建立船用光储发电系统模型,设计提升储能电池出力水平的MPC策略;其次在MATLAB中搭建仿真模型,仿真结果表明MPC可以在有效提升控制精度的同时平抑光伏并网波动,实现了电池在船舶电力系统充放电过程中的控制优化;最后分析了储能电池容量对于平抑效果的影响,得出MPC使储能模块对于不同渗透率的光伏均能实现平抑的结论,为高渗透率光伏发电系统在船舶上的应用与发展提供了一种解决方案。更多还原

【Abstract】 In order to effectively suppress the fluctuation of the output power of marine PV and improve the penetration of PV in the marine power grid,this paper takes the "COSCO Tengfei" ship as the research object,applies the theory of Model Predictive Control(MPC) to the research of marine photovoltaic storage power generation system,and uses the energy storage charging/discharging to achieve two-way power control.Firstly,the model of marine photovoltaic storage power generation system is established,and the MPC strategy to improve the output level of lithium battery is designed.Secondly,the simulation is made in MATLAB.The simulation results show that the proposed method can effectively improve the control accuracy while suppressing the photovoltaic grid connection fluctuation,and realize the optimal control of lithium battery charging and discharging process in the marine power system.Finally,based on the MPC strategy,the influence of the capacity of the energy storage battery on the flattening effect is analyzed,and the conclusion that the MPC energy storage module can flatten the PV with different permeability is drawn,which provides a solution for the application and development of the high permeability PV power generation system on ships.更多还原