• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2018, Vol. 39 ›› Issue (4): 83-.doi: 10.3969/j.issn.1000-7229.2018.04.013

• 储能技术 • 上一篇    下一篇

 基于总体平均经验模态分解的混合储能系统协调优化控制

 李大勇1,都明亮2,田春光2,韩晓娟3

 
  

  1.  (1.国网吉林省电力有限公司,长春市130021;2.国网吉林省电力有限公司电力科学研究院,长春市130021;3.华北电力大学控制与计算机工程学院,北京市102206)
     
  • 出版日期:2018-04-01
  • 作者简介:李大勇(1971),男,硕士,高级工程师,主要研究方向为电力系统自动化及新能源发电技术; 都明亮(1965),男,本科,高级工程师,主要研究方向为新能源并网及电网规划研究; 田春光(1970),男,硕士,高级工程师,主要研究方向为新能源并网及电网规划研究; 韩晓娟(1970),女,通信作者,博士,教授,主要研究方向为新能源发电技术。
  • 基金资助:
     基金项目:国家自然基金项目(51577065);国家电网公司科技项目(KY-SG-2016-204-JLDKY)

 Coordinated Optimization Control of Hybrid Energy Storage System Based on Ensemble Empirical Mode Decomposition

 LI Dayong1,DU Mingliang2, TIAN Chunguang2, HAN Xiaojuan3

 
  

  1.  (1.State Grid Jilin Electric Power Company, Changchun 130021, China;2. Electrical Power Research Institute of State Grid Jilin Electric Power Company, Changchun 130021, China;3. School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)
     
  • Online:2018-04-01
  • Supported by:
     Project supported by National Natural Science Foundation of China(51577065);Science and Technology Project of State Grid Corporation of China(KY-SG-2016-204-JLDKY)
     

摘要:  摘要:由于光伏发电具有较强的随机性和波动性,利用储能系统能够有效平抑光伏功率的波动。该文提出了基于总体平均经验模态分解(ensemble empirical mode decomposition, EEMD)的混合储能协调优化控制方法。首先,根据光伏并网波动率限制要求调整EEMD的滤波阶次k1,将光伏功率分解为高频分量和低频分量,然后,将分解后的低频分量作为光伏电站的并网功率实现光伏功率的平滑控制。为了提高混合储能系统使用寿命,根据电池和超级电容器的荷电状态(state of charge,SOC)对滤波阶数k2进行调整,实现电池和超级电容器之间的能量分配。根据电池和超级电容器的充放电优先级规则,实现超级电容器和储能电池之间的功率最优控制。通过仿真实例验证了本文方法的有效性和正确性。

 

关键词:  , 关键词: 总体平均经验模态分解(EEMD), 混合储能系统(HESS), 滤波阶次, 波动率, 荷电状态(SOC), 光伏发电

Abstract:  ABSTRACT:  Due to the strong randomness and volatility of the photovoltaic power generation, the energy storage system can be used to effectively stabilize the fluctuation of the photovoltaic output power. This paper proposes a coordinated optimization control method of hybrid energy storage system (HESS) bases on ensemble empirical mode decomposition (EEMD). The photovoltaic output power is decomposed into the high frequency component and low frequency component by adjusting the filter order k1 of the EEMD according to the fluctuation rate limit of the photovoltaic output power, and the low frequency component is regarded as the connected grid power to achieve a smoothing control of the photovoltaic output power. In order to improve the service life of hybrid energy storage system, according to the SOC (state of charge) of batteries and super capacitors, the filter order k2 of the EEMD is adjusted to realize the energy distribution between batteries and super capacitors. According to the priority rule of charge and discharge of batteries and super capacitors, the optimal control between super capacitors and batteries is realized. The effectiveness and correctness of the proposed method are verified by a simulation example.

 

Key words:  KEYWORDS: ensemble empirical mode decomposition (EEMD), hybrid energy storage system (HESS), filter order, volatility, state of charge (SOC), photovoltaic power generation

中图分类号: