| 基于虚拟同步电机技术的混合储能平抑微网频率波动策略研究 |
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| 引用本文： | 禹红,夏向阳,彭梦妮,赵昕昕,李付亮. 基于虚拟同步电机技术的混合储能平抑微网频率波动策略研究[J]. 电力系统保护与控制, 2018, 46(22): 47-54 |
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| 作者姓名： | 禹红 夏向阳 彭梦妮 赵昕昕 李付亮 |
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| 作者单位： | 湖南水利水电职业技术学院，湖南 长沙 410131,长沙理工大学电气与信息工程学院，湖南 长沙 410114,长沙理工大学电气与信息工程学院，湖南 长沙 410114,长沙理工大学电气与信息工程学院，湖南 长沙 410114,湖南水利水电职业技术学院，湖南 长沙 410131 |
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| 基金项目： | 国家自然科学基金项目资助(51307009);湖南省水利科研项目资助(湘水科计[2015]245-10) |
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| 摘 要： | 由锂电池和超级电容器组成的混合储能系统(HESS)具有响应快速、短时吞吐功率能力强的优点,可以很好地作为电网的分布式储能设备补偿电网频率波动。提出在储能单元体系优化匹配下,基于荷电状态(SOC)反馈的自学习平滑储能控制策略,自主归纳更新混合储能的控制规则,利用虚拟同步电机(VSG)技术来解决可再生能源功率波动引起的电网频率偏移问题。最后,在Matlab/Simulink中建立了光储微网模型。通过仿真验证了配置混合储能单元的VSG能有效模拟出同步电机的转动惯量与一次调频特性,提高了并网系统的稳定性。
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| 关 键 词： | 混合储能系统；自学习；平滑控制；虚拟同步电机；频率偏移 |
| 收稿时间： | 2017-11-16 |
| 修稿时间： | 2017-12-29 |
Research on strategy of micro-grid frequency control in hybrid energy storage system based on virtual synchronous generator technology |
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| YU Hong,XIA Xiangyang,PENG Mengni,ZHAO Xinxin and LI Fuliang. Research on strategy of micro-grid frequency control in hybrid energy storage system based on virtual synchronous generator technology[J]. Power System Protection and Control, 2018, 46(22): 47-54 |
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| Authors: | YU Hong XIA Xiangyang PENG Mengni ZHAO Xinxin LI Fuliang |
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| Affiliation: | Hunan Polytechnic of Water Resources and Electric Power, Changsha 410131, China,School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410114, China,School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410114, China,School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410114, China and Hunan Polytechnic of Water Resources and Electric Power, Changsha 410131, China |
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| Abstract: | The Hybrid Energy Storage System (HESS) consisting of battery and super capacitor has the advantages of fast response and high power capacity, which can well act as distributed energy storage equipment to compensate power grid frequency fluctuation. This paper puts forward a self-learning smooth energy storage control strategy based on State-of-Charge (SOC) feedback under energy storage unit system optimal matching, which automatically concludes and updates the control rule of hybrid energy storage and makes use of Virtual Synchronous Generator (VSG) to solve the problem of grid frequency offset caused by power fluctuation of renewable energy. Finally, a photovoltaic-storage- microgrid model is established in Matlab/Simulink. Simulation results show that the proposed HESS based VSG can effectively simulate the rotational inertia and the primary frequency modulation characteristics of SG, which improves the stability of the connected grid. This work is supported by National Natural Science Foundation of China (No.51307009). |
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| Keywords: | hybrid energy storage system (HESS) self-learning smooth control virtual synchronous generator frequency offset |
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