基于FIR滤波器降幅平抑波动的混合储能优化调度  

Optimization Dispatching of Hybrid Energy Storage Based on FIR Filter for Reducing Amplitude and Smoothing Fluctuations

作　　者：李培强 刘抒睿 郭榕 LI Peiqiang;LIU Shurui;GUO Rong(School of Electric,Electrical Engineering and Physics,Fujian University of Technology,FuZhou 350118,China;State Grid Yongchun County Power Supply Company,Nan′an,Fujian 362300,China)

机构地区：[1]福建理工大学电子电气与物理学院,福州350118 [2]国网永春县供电公司,福建南安362300

出　　处：《南方电网技术》2025年第3期39-50,共12页Southern Power System Technology

基　　金：国家重点研发计划资助项目(2021YFB2601504);国家自然科学基金资助项目(52377097)。

摘　　要：针对风功率波动平抑场景,以风储联合发电系统作为研究对象,提出一种FIR滤波器结合降幅环节的风电波动平抑策略,同时通过对被滤除波动分量进行基于EMD的自适应重构,从而实现对混合储能的优化调度。该策略选取了一种可以动态调节滤波阶数以及截止频率组合的FIR滤波器进行滤波,并加入FRA降幅环节处理FIR滤波器无法很好平滑的高幅值数据点,从而对风电波动进行平抑;将平抑后滤除的风电波动的作为混合储能功率进行EMD分解,得到的IMF分量通过算法自适应重构为高-低频两组功率分别配给超级电容器-蓄电池,进而得到最优调度参数。通过算例验证分析,加入FRA环节的FIR滤波能够适应不同频率、幅值的功率特性,同时能有效降低1 min、10 min尺度的功率波动,避免了平滑过度导致储能负担加重问题;EMD分解后对IMF分量的自适应重构,能够得到用于补偿不同充放电特性的蓄电池、超级电容器功率,显著降低了储能出力负担同时提高调度经济性。For the scenario of wind power fluctuation smoothing,taking the wind and energy storage combined power-generation system as the research object,a FIR filter combined with smooth strategy of wind power fluctuation of amplitude reduction link is proposed,and then the optimization dispatching of hybrid energy storage is realized through adaptive reconstruction based on EMD of filtered fluctuation components.In this strategy,a FIR filter that can dynamically adjust the combination of filtering order and cut-off frequency is selected for filtering,and FRA amplitude reduction link is introduced to address high-amplitude data points that FIR filters cannot smooth well,so as to smooth wind power fluctuations.The smoothed and filtered wind power fluctuations are used as hybrid energy storage power for EMD decomposition,and the IMF component is adaptively reconstructed into two groups of highlow frequency power allocated to super capacitors-batteries respectively by an algorithm,so as to obtain the optimal energy storage optimal dispatching parameters.Through the numerical example verification analysis,the FIR filtering added with FRA can adapt to the power characteristics of different frequencies and amplitude,effectively reduce the power fluctuations of 1 min and 10 min scales,and avoid the problem of increasing the energy storage burden caused by excessive smoothing.The adaptive reconstruction of IMF components after EMD decomposition can obtain the power of batteries and super capacitors to compensate for different charge and discharge characteristics,significantly reducing the energy storage output burden and improve dispatching economy.

关 键 词：风电波动 混合储能 优化调度 经验模态分解 滤波器 

分 类 号：TN713[电子电信—电路与系统] TM614[电气工程—电力系统及自动化]