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ISSN 0254-0096 CN 11-2082/K

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (2): 239-246.DOI: 10.19912/j.0254-0096.tynxb.2021-1070

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RESEARCH ON OPTIMIZATION OF HYBRID ENERGY STORAGE CAPACITY USING ENSEMBLE EMPIRICAL MODE ECOMPOSITION AND FUZZY CONTROL

Jia Dongwei1, Ren Yongfeng1, Li Limei2, Yun Pingping3, Xue Yu1, Mi Yue3   

  1. 1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;
    2. Hohhot Vocational College, Hohhot 010010, China;
    3. Inner Mongolia Guotian New Energy Technology Co., Ltd., Hohhot 010020, China
  • Received:2021-09-06 Online:2023-02-28 Published:2023-08-28

基于集合经验模态分解的微电网混合储能优化配置

贾东卫1, 任永峰1, 李莉美2, 云平平3, 薛宇1, 米玥3   

  1. 1.内蒙古工业大学能源与动力工程学院,呼和浩特 010051;
    2.呼和浩特职业学院,呼和浩特 010010;
    3.内蒙古国天新能源科技有限公司,呼和浩特 010020
  • 通讯作者: 任永峰(1971—),男,博士、教授,主要从事新型电力系统运行与控制、新能源发电、智能电网、储能技术方面的研究。renyongfeng@vip.sina.com
  • 基金资助:
    国家自然科学基金(51967016; 51567020); 内蒙古自治区科技重大专项(2019ZD027); 内蒙古自治区自然科学基金(2015MS0532)

Abstract: In order to stabilize the power of the microgrid tie-line, this paper adopts the combination of lithium iron phosphate batteries with super-capacitors to optimize the configuration of hybrid energy storage in the microgrid. To start with, according to the grid scheduling arrangement, the net load of microgrid is decomposed into tie-line power and total power of hybrid energy storage system. Secondly, the total power of the hybrid energy storage system is decomposed into the low-frequency component of lithium battery suppression and the high-frequency component of super-capacitor suppression through ensemble empirical modal decomposition. In addition, the equal annual cost, the flat energy contact line power and the balance target function of energy supply and demand are established via applying the adaptive particle group algorithm to solve the hybrid energy storage capacity. Depending on the charge state of energy storage, the fuzzy control algorithm was used to make secondary corrections to the charging and discharging power of lithium batteries and super capacitors to ensure the long-term operation of the energy storage system. Based on an example analysis of a grid-connected microgrid, the economy and effectiveness of the method is verified through simulation.

Key words: energy storage, microgrid, particle swarm optimization, ensemble empirical mode decomposition, tie-line power, fuzzy control

摘要: 为了平抑微电网联络线功率,该文采用磷酸铁锂电池与超级电容组合的方式进行微电网混合储能优化配置。首先,根据电网调度安排,将微电网净负荷分解为联络线功率与混合储能系统总功率。其次,通过集合经验模态分解将混合储能总功率分解为锂电池平抑的低频分量与超级电容平抑的高频分量,并建立混合储能的等年值成本、平抑联络线功率、能量供需平衡目标函数,采用自适应粒子群算法求解混合储能容量。根据储能的荷电状态,采用模糊控制算法对锂电池、超级电容的充放电功率进行二次修正,保证储能系统的长期运行。基于某并网型微电网进行算例分析,仿真验证该方法的经济性与有效性。

关键词: 储能, 微电网, 粒子群优化, 集合经验模态分解, 联络线功率, 模糊控制

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