Hybrid energy storage capacity optimization based on VMD-SG and improved Firehawk optimization

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2024-11-07 DOI:10.1016/j.epsr.2024.111218

Zejia Zhou , Zengqiang Ma , Tianming Mu

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引用次数: 0

Abstract

Due to the hybrid energy storage system(HESS) in assisting the grid connection of Photovoltaic(PV) energy, the pursuit of smooth effect leads to increased system costs. In this paper, a capacity optimization method considering grid-connected constraints and dynamic balance of energy storage economy is proposed. Firstly, by combining variational mode decomposition(VMD) and Savitzky-Golay filtering method(SG), the photovoltaic power signal is decomposed and reconstructed to minimize energy storage usage while meeting grid connection standards. The reconstructed compensation power is used as the data input for cost analysis. Secondly, considering the energy storage SOC and power constraints, an economic capacity cost model is constructed. Then, chaotic mapping and variable spiral search strategy are introduced to improve the Firehawk optimization algorithm(IFHO), and the optimized capacity allocation scheme is obtained by solving the capacity allocation model. Finally, by analyzing the power data of a photovoltaic energy storage demonstration project in typical days of four seasons in Hebei Province, it is verified that the strategy is effective and economic.

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基于 VMD-SG 和改进 Firehawk 优化的混合储能容量优化

由于混合储能系统（HESS）在辅助光伏发电并网时，一味追求平滑效果会导致系统成本增加。本文提出了一种考虑并网约束和储能经济性动态平衡的容量优化方法。首先，结合变模分解法（VMD）和萨维茨基-戈莱滤波法（SG），对光伏功率信号进行分解和重构，在满足并网标准的前提下尽量减少储能用量。重构后的补偿功率将作为成本分析的数据输入。其次，考虑到储能 SOC 和功率约束，构建经济容量成本模型。然后，引入混沌映射和可变螺旋搜索策略来改进火鹰优化算法（IFHO），通过求解容量分配模型得到优化的容量分配方案。最后，通过分析河北省某光伏储能示范项目四季典型日的电量数据，验证了该策略的有效性和经济性。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.