| 引用本文: | 王振浩,刘宇男,张明江,陈继开,张钰.基于双向DC/AC变换器的混合储能系统动态控制策略[J].电力系统保护与控制,2017,45(3):26-32.[点击复制] |
| WANG Zhenhao,LIU Yunan,ZHANG Mingjiang,CHEN Jikai,ZHANG Yu.Dynamic control strategy for hybrid energy storage system based on bi-directional DC/AC converters[J].Power System Protection and Control,2017,45(3):26-32[点击复制] |
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| 摘要: |
| 针对风电和光伏并网发电系统的功率波动问题，研究了一种基于双向DC/AC变换器的混合储能系统的动态控制策略。对含有超级电容器与蓄电池组的混合储能系统，通过双闭环控制器对变换器内部的电压电流进行控制，把波动变化较快的电流分量分配给超级电容器，由蓄电池来响应波动变化较慢的电流分量。同时，控制系统将超级电容器的电压稳定在预设范围内。基于扩展卡尔曼滤波(Extended Kalman Filter, EKF)对蓄电池的荷电状态(State of Charge, SOC)进行控制，使其SOC值稳定在安全范围内并延长了蓄电池的使用寿命。通过仿真实验，验证了控制方法的有效性。 |
| 关键词: 双向DC/AC变换器 混合储能系统 动态控制策略 超级电容 蓄电池 扩展卡尔曼滤波 |
| DOI：10.7667/PSPC160291 |
| 投稿时间：2016-03-08修订日期：2016-09-06 |
| 基金项目:2015年国网黑龙江省电力有限公司科技项目;吉林市科技局杰出青年人才培养计划(20156407) |
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| Dynamic control strategy for hybrid energy storage system based on bi-directional DC/AC converters |
| WANG Zhenhao,LIU Yunan,ZHANG Mingjiang,CHEN Jikai,ZHANG Yu |
| (School of Electrical Engineering, Northeast Dianli University, Jilin 132012, China;State Grid Heilongjiang Electric Power Research Institute, Harbin 150030, China) |
| Abstract: |
| According to the problem of power fluctuation of wind power and photovoltaic connected power generation system, a new dynamic energy control strategy of hybrid energy storage system (HESS) based on bi-directional DC/AC converters is presented. In the HESS composed of batteries and super-capacitor, the two double-loop controllers are used to control the internal voltage and current of the converter, allocating the fast current variations to the super-capacitor while the slow current variations to the batteries. At the same time, the control system maintains the super-capacitor's voltage within a preset range. The Extended Kalman Filter (EKF) is used to control the state of charge (SoC) of battery, making the battery’s SOC maintain within the safety limits to prolong its lifetime. The simulation experiment is provided to verify the effectiveness of the proposed control strategy. This work is supported by 2015 Science and Technology Project of State Grid Heilongjiang Electric Power Limited Company and Distinguished Youth Talents Cultivation Plan of Jilin Science and Technology Bureau (No. 20156407). |
| Key words: bi-directional DC/AC converter hybrid energy storage system dynamic control strategy super-capacitor battery extended Kalman filter |
