混合储能辅助风电场平滑出力的功率配比方法研究  

Research on power ratio method of wind farm smooth output assisted by hybrid energy storage

作　　者：王丹阳 胡三高[1] 何海婷 柳亦兵[1] WANG Dan-yang;HU San-gao;HE Hai-ting;LIU Yi-bing

机构地区：[1]华北电力大学先进飞轮储能技术研究中心,北京102206 [2]中国大唐集团科学技术研究院有限公司,北京100040

出　　处：《节能》2022年第1期4-9,共6页Energy Conservation

摘　　要：随着风电渗透率的增大,风电并网时对电网产生的波动也逐渐增大,采用储能系统对风电场出力进行平滑处理,可以使风电满足规定的并网要求。针对风电场出力波动成分的频率范围较宽的问题,采用混合储能系统(飞轮+电化学储能)进行不同波动频率成分平滑,提出一种运行数据驱动的混合储能容量配置方法,利用抗脉冲平均滤波法对风电场出力数据序列进行平滑,求出需要储能系统调节的出力差值序列,再利用经验模态分解方法对出力差值序列进行分解,根据分解结果的低频和高频分量占比,分别计算确定飞轮储能和电化学储能的容量。用某风电场的实际功率数据对上述方法的效果进行验证,结果表明,采用不同时长出力数据计算混合储能系统容量配比具有很好的鲁棒性。As the permeability of wind power increases, the fluctuations in the grid when wind power is connected to the grid have gradually increased. Using energy storage system to smooth the output of wind farm can make wind power meet the requirements of grid connection. Aiming at the problem of wide frequency range of wind farm output fluctuation components, this paper discusses the application of hybrid energy storage system(flywheel+electrochemical energy storage) to smooth different fluctuation frequency components, and proposes an operation data-driven hybrid energy storage capacity configuration method. Use the anti-pulse average filtering method to smooth the output data sequence of the wind farm, find the output difference sequence that needs to be adjusted by the energy storage system, and then use the empirical mode decomposition method to decompose the output difference sequence. According to the low frequency and high frequency proportion of the decomposition result, the capacity of flywheel energy storage and electrochemical energy storage are calculated and determined, respectively. The verification of the effect of the above method with the actual power data of a wind farm shows that the use of output data of different durations to calculate the capacity ratio of the hybrid energy storage system has good robustness.

关 键 词：功率平滑 经验模态分解 混合储能 容量配置 

分 类 号：TM614[电气工程—电力系统及自动化]