考虑环流抑制的微网并联多逆变器稳定运行控制研究  

Research on Stable Operation Control of Parallel Multi-Inverter in Microgrid Considering Circulating Current Suppression

作　　者：江风云[1] JIANG Fengyun(College of Physical Science and Technology,Yichun University,Yichun 336000,China)

机构地区：[1]宜春学院物理科学与工程技术学院,宜春336000

出　　处：《电源学报》2023年第3期41-47,共7页Journal of Power Supply

基　　金：国家自然科学基金资助项目(61963036)。

摘　　要：针对传统微网并联多逆变器运行控制策略仅能在某种程度上抑制系统中的环流,抑制后的环流仍然比较大的问题,提出考虑环流抑制的微网并联多逆变器稳定运行控制研究。首先,建立微网并联多逆变器模型;基于微网并联多逆变器模型,计算微网并联多逆变器输出有功功率和无功功率;根据计算出的数据,提出改进后的下垂控制方法,对系统进行控制,以减小系统的环流值,控制微网并联多逆变器稳定运行。仿真实验结果显示,在存在环流干扰条件下,当有功功率和无功负载出现变化时,采用所提方法对微网并联多逆变器进行控制,其输出功率和输出频率会随着有功功率和无功负载的变化而产生相应的变化,实现了微网并联多逆变器稳定运行,说明该方法在微网并联多逆变器稳定运行控制研究方面有一定的参考价值。Aimed at the problem that the traditional operation control strategy for parallel multi-inverter in microgrid can only suppress the circulating current in the system to some extent and the circulating current after suppression is still large,the stable operation control of parallel multi-inverter in microgrid considering the circulating current suppression is put forward in this paper.First,a model of parallel multi-inverter in microgrid is established,based on which the active and reactive power output from the parallel multi-inverter are calculated.According to the calculated data,an improved droop control method is proposed to control the system,so as to reduce the circulating current value of the system and control the stable operation of the parallel multi-inverter in microgrid.Simulation results show that under the condition of circulating current disturbance,the output power and output frequency will change with the variations in active power and reactive load when applying the proposed method.As a result,the stable operation of the parallel multiinverter in microgrid is realized,indicating that the proposed method has certain reference value to the research on the stable operation control of parallel multi-inverter in microgrid.

关 键 词：微网并联多逆变器 环流 下垂控制 控制系数 

分 类 号：TM46[电气工程—电器]