引用本文: | 闫群民,刘语忱,董新洲,马永翔.基于CEEMDAN-HT的平抑光伏出力混合储能
容量优化配置[J].电力系统保护与控制,2022,50(21):43-53.[点击复制] |
YAN Qunmin,LIU Yuchen,DONG Xinzhou,MA Yongxiang.Hybrid energy storage capacity optimization configuration for smoothing PVoutput based on CEEMDAN-HT[J].Power System Protection and Control,2022,50(21):43-53[点击复制] |
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摘要: |
光伏出力具有间歇性和波动性,利用储能装置可减小光伏并网对电网的影响。以平抑光伏功率波动效果为标准,提出了一种由超级电容和蓄电池组成的混合储能系统(hybrid energy storage system, HESS)的容量配置方法。采用由递推平均和中值平均加权滤波的算法平滑光伏出力,得到光伏并网功率和HESS参考功率。利用完全集合经验模态分解和希尔伯特变换提取HESS 参考功率的高频与低频分量,对HESS内部功率进行一次分配。之后为了避免HESS荷电状态频繁越限,同时保证HESS能持续工作,提出一种HESS功率的均衡管理方法,对一次分配功率的衰减进行修正,再对修正后的HESS参考功率进行容量配置。最后,基于全寿命周期成本建立经济评估模型,对比不同的储能容量配置策略,利用实际数据仿真验证了所提方法的有效性与经济性。 |
关键词: 光伏发电 混合储能 平抑功率波动 完全集合经验模态分析 容量配置 |
DOI:DOI: 10.19783/j.cnki.pspc.220120 |
投稿时间:2022-01-26修订日期:2022-03-08 |
基金项目:国家重点研发计划项目资助(2016YFB0900600);陕西省教育厅重点科学研究计划项目资助(20JS018) |
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Hybrid energy storage capacity optimization configuration for smoothing PVoutput based on CEEMDAN-HT |
YAN Qunmin,LIU Yuchen,DONG Xinzhou,MA Yongxiang |
(1. School of Electrical Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
2. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;1. School of Electrical Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
2. Department of Electrical Engineering, Tsinghua University, Beijing 100085, China;1. School of Electrical Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
2. Department of Electrical Engineering, Tsinghua University, Beijing 100086, China) |
Abstract: |
V output is intermittent and volatile, and the use of energy storage devices can reduce the impact of PV grid-connected on the grid. A capacity configuration of a hybrid energy storage system (HESS) composed of super capacitor and battery is proposed based on the effect of smoothing the PV power fluctuation. An algorithm of recursive average and median average weighted filtering is used to smooth the PV output, and the PV grid-connected power and HESS reference power are obtained. The high frequency and low frequency components of HESS reference power are extracted by complete ensemble empirical mode decomposition (CEEMDAN) and Hilbert transform (HT), and the internal power of HESS is allocated once. Then, in order to avoid frequent over-limits of HESS state of charge (SOC) and to ensure that HESS can continue to work, this paper proposes a balanced management method of HESS power. This corrects the attenuation of primary distribution power, and then configures the capacity of the corrected HESS reference power. Finally, an economic evaluation model is established based on life cycle cost (LCC), and different energy storage capacity allocation strategies are adopted. The effectiveness and economy of the proposed method are verified by actual data simulation.
This work is supported by the National Key Research and Development Program of China (No. 2016YFB0900600). |
Key words: solar power hybrid energy storage smoothing power fluctuation CEEMDAN capacity configuration |