| 微电网孤岛运行混合储能自适应控制策略 |
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| 引用本文： | 侯世英,余海威,李琦,杨祝涛,毕晓辉. 微电网孤岛运行混合储能自适应控制策略[J]. 电力系统自动化, 2017, 41(17): 15-21 |
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| 作者姓名： | 侯世英 余海威 李琦 杨祝涛 毕晓辉 |
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| 作者单位： | 输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆市 400044,输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆市 400044,输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆市 400044,输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆市 400044,国网四川省电力公司天府新区供电公司, 四川省成都市 610041 |
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| 基金项目： | 高等学校学科创新引智计划(“111”计划)资助项目(B08036) |
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| 摘 要： | 蓄电池/超级电容器混合储能系统综合了超级电容器高功率密度和蓄电池高能量密度的优势,是储能技术未来发展方向之一。针对平抑微电网直流母线电压波动的应用需求,研究了蓄电池/超级电容器混合储能系统,建立了微电网孤岛运行状态混合储能系统等效电路模型。为充分保证混合储能系统整体性能,提出一种主从双环结构自适应控制策略,系统依据所设置的不同开环截止频率,对母线功率波动进行自适应响应,完成上层的功率自适应调节并使之平衡。针对负载电流不易测量的问题,提出基于扩张状态观测器的方法对其进行虚拟测量。仿真分析结果验证了所提控制策略的有效性与可行性。
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| 关 键 词： | 微电网(微网)；孤岛运行；混合储能；自适应控制；扩张状态观测器 |
| 收稿时间： | 2016-12-13 |
| 修稿时间： | 2017-07-06 |
Adaptive Control Strategy of Hybrid Energy Storage in Microgrid Islanded Operation State |
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| HOU Shiying,YU Haiwei,LI Qi,YANG Zhutao and BI Xiaohui. Adaptive Control Strategy of Hybrid Energy Storage in Microgrid Islanded Operation State[J]. Automation of Electric Power Systems, 2017, 41(17): 15-21 |
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| Authors: | HOU Shiying YU Haiwei LI Qi YANG Zhutao BI Xiaohui |
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| Affiliation: | State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China,State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China,State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China,State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China and Tianfu District Power Supply Company, State Grid Sichuan Electric Power Company, Chengdu 610041, China |
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| Abstract: | The battery/supercapacitor hybrid energy storage system has become one of the future development directions for energy storage technology by combining the advantages of high power density and high energy density. According to the application demand for stabilizing DC bus voltage fluctuation of the microgrid, the battery/supercapacitor hybrid energy storage system is studied, and the equivalent circuit model of hybrid energy storage system is established. In order to fully guarantee the overall performance of the hybrid energy storage system, a master-slave dual-loop structure adaptive control strategy is proposed. The hybrid energy storage system can produce adaptive response to the output power fluctuation according to the different cut-off frequencies of the system. And the upper level of the power adjustment is completed and balanced. To solve the problem of difficulty in measuring the load current, virtual measurement based on the extended state observer is proposed. Simulation results have verified the effectiveness and feasibility of the proposed control strategy. |
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| Keywords: | microgrid islanded operation hybrid energy storage adaptive control extended state observer |
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