强随机特性的分布式光伏点多面广、分散无序接入智能配电网成为趋势,给智能配电网稳定运行带来了巨大的挑战。合理优化配置混合储能是平抑这种强间歇性波动的重要措施之一,为此,提出了一种高比例分布式光伏接入下智能配电网的集中式混合储能的选址定容优化方法。首先,选取蓄电池和超级电容组成混合储能系统(hybrid energy storage system
HESS),采用变分模态分解(variational mode decomposition
VMD)算法分配储能功率,并通过模糊控制修正蓄电池和超级电容的功率信号,使其荷电状态(state of charge
Yushu SUN,Xisheng TANG,Xiaozhe SUN,Dongqiang JIA,Zhihuang CAO,Jing PAN,Bin XU.Model predictive control and improved low-pass filtering strategies based on wind power fluctuation mitigation[J].Journal of Modern Power Systems and Clean Energy,2019(03).