提出一种考虑运行点的的风电场混合储能模型预测控制(model predictive control
MPC)策略,实现有效平滑风电出力和混合储能系统内部功率分配。首先,以储能系统出力最优为目标,满足并网标准和储能运行约束作为约束条件,推导出平滑风电出力的预测控制模型,调用求解器实现储能出力优化。然后,基于一阶低通滤波解耦内部功率,考虑蓄电池运行点对混合储能功率解耦的影响,以调整超级电容出力为原则,提出改善混合储能内部无效能量交换的滤波参数调整规则,并设计滤波参数模糊控制规则实现自适应控制,有效避免蓄电池-超级电容间无效能量交换,并能延长蓄电池运行寿命。最后,在MATLAB/SIMULINK中搭建风电场-混合储能系统并网模型,并采用实际风电功率数据进行验证,算例表明,相比低通滤波法,所提策略使混合储能能量交换降低44.94%;蓄电池-超级电容间无效能量交换降低99.4%,有效提升混合储能系统整体运行效能。
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