| 引用本文: | 张宁,杨洪明,徐岩,王懂.局部阴影条件下太阳能电池-超级电容器件的充放电控制方法[J].电力系统保护与控制,2020,48(4):72-79.[点击复制] |
| ZHANG Ning,YANG Hongming,XU Yan,WANG Dong.Charge and discharge control method of solar cell-supercapacitor under partial shading condition[J].Power System Protection and Control,2020,48(4):72-79[点击复制] |
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| 摘要: |
| 局部阴影条件下，传统光伏阵列中被遮挡光伏组件和未遮挡光伏组件的功率输出特性不一致，导致光伏阵列的功率输出曲线存在多峰值。为此，利用太阳能电池-超级电容器件(Solar cell-supercapacitor device, SCSD)的发电-储能双重功能，构建了以SCSD为基本单元的光伏阵列，并对正常光照和局部阴影下SCSD的数学模型及工作特性进行了分析。在此基础上，提出了一种基于开关网络的充放电控制方法。局部阴影下利用开关网络变换不仅能对SCSD进行独立控制，实现SCSD内部的超级电容对本身光伏功率缺额进行补偿，而且能控制多个SCSD的超级电容相互配合，共同补偿光伏功率缺额。最后基于Matlab仿真，验证了该方法不仅能有效避免储能电池组不均衡问题，而且能在局部阴影下使光伏阵列输出功率曲线恢复单峰值，最大限度地降低局部阴影下的光伏功率波动。 |
| 关键词: 太阳能电池-超级电容器件 局部阴影 功率多峰值 充放电策略 功率补偿 |
| DOI：10.19783/j.cnki.pspc.190369 |
| 投稿时间：2019-04-02修订日期：2019-07-11 |
| 基金项目:国家自然科学基金项目资助(71931003); 湖南省科技计划项目资助(2019CT5001, 2018GK4002, 2017CT5015, 2017WK2053);泛在电力物联网湖南省重点实验室资助(2019TP1016);湖南省研究生科研创新项目(CX2018B525) |
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| Charge and discharge control method of solar cell-supercapacitor under partial shading condition |
| ZHANG Ning,YANG Hongming,XU Yan,WANG Dong |
| (School of Electrical and Information Engineering, Changsha University of Science and Technology, Hunan Provincial Engineering Research Center of Electric Transportation and Smart Distribution Network, Changsha 410114, China;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore) |
| Abstract: |
| Under partial shading condition, the power output characteristics of occluded PV modules and unoccluded PV modules in traditional PV arrays are inconsistent, which results in the total power output curve of the photovoltaic array having multiple peaks. Therefore, this paper uses the power generation-energy storage dual function of Solar Cell-Supercapacitor Device (SCSD) to construct a photovoltaic array based on SCSD, and analyzes the mathematical model and working characteristics of SCSD under normal illumination and partial shading. On this basis, it puts forward a charge and discharge control method based on switch network. Under the partial shading, the switch network transformation can not only independently control the SCSD and realize the compensation of the photovoltaic power deficiency by the supercapacitor of the SCSD, but also control the cooperation of the supercapacitor of multiple SCSD to compensate the photovoltaic power deficiency. Lastly, it is verified by Matlab simulation that the method proposed in this paper can not only effectively avoid the unbalanced problem of energy storage battery pack, but also restore the PV array output power curve to a single peak under the local shadow and minimize the photovoltaic power fluctuation under the local shadow. This work is supported by National Natural Science Foundation of China (No. 71931003), Science and Technology Project of Hunan Province (No. 2019CT5001, No. 2018GK4002, No. 2017CT5015, and No. 2017WK2053), Hunan Key Laboratory of Ubiquitous Power Internet of Things (No. 2019TP1016), and Postgraduate Scientific Research Innovation Project of Hunan Province (No. CX2018B525). |
| Key words: solar cell-supercapacitor device partial shading multi-peak power charge and discharge strategy power compensation |
