摘要
以蓄电池与超级电容器混合储能系统为研究对象,提出基于频率滞环的孤立微网混合储能系统频率控制策略。该控制策略包含Ⅰ、Ⅱ两种控制方式:控制方式Ⅰ通过引入频率滞环来协调频率控制精度与蓄电池充放电次数的关系,可有效减小蓄电池的充放电次数;控制方式Ⅱ综合考虑蓄电池使用寿命和超级电容器容量的双重约束,通过频率滞环协调蓄电池和超级电容器的充放电优先级,实现不同储能装置的优化控制。在DIg SI-LENT商业软件中搭建了Benchmark低压微网算例,仿真结果验证了所提控制策略的有效性。
In this paper, a frequency control strategy of hybrid energy storage system (HESS)including battery and su- percapacitor for autonomous microarid (AMG)based on frequency hysteretic loop is proposed. The control strategy is composed of two modes. Control 1 coordinates the relationship between the frequency control precision and the battery charge/discharge cycles by utilizing the proposed frequency hysteretic loop, thus reduces the charge/discharge times. Considering the dual constraints from battery lifetime and the supercapacitor capacity comprehensively, Control II coor- dinates the charge/discharge priorities of battery and supercapacitor to achieve an optimal control of different energy storage devices in the HESS. Finally, a Benchmark low voltage AMG is established in DIgSILWNT as test system, and the simulation result verifies the effectiveness of the proposed control strategy.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2016年第11期50-57,共8页
Proceedings of the CSU-EPSA
基金
国家高技术研究发展计划(863计划)资助项目(2015AA050403)
国家电网科技项目分布式新能源发电系统并网及调度运行关键技术研究与示范工程资助项目
天津市应用基础与前沿技术研究计划资助项目(15JCQNJC43500)
关键词
孤立微网
频率控制
频率滞环
混合储能系统
优化控制
autonomous microgrid (AMG)
frequency control
frequency hysteretic loop
hybrid energy storage system (HESS)
optimal control