Droop-Free Distributed Frequency Control of Hybrid PV-BES Microgrid with SOC Balancing and Active Power Sharing
Droop-Free Distributed Frequency Control of Hybrid PV-BES Microgrid with SOC Balancing and Active Power Sharing
复制标题
DOI：
10.1109/pesgm48719.2022.9916737
复制
发表时间：
2022-07
期刊：
影响因子：
--
通讯作者：
S. Mohiuddin;Amirthagunaraj Yogarathnam;M. Yue;Junjian Qi
中科院分区：
文献类型：
--
作者：
S. Mohiuddin;Amirthagunaraj Yogarathnam;M. Yue;Junjian Qi
本文提出了一种基于光伏与电池储能混合（PV-BES）微电网的无下垂分布式频率控制方法。分布式荷电状态（SOC）平衡调节器利用分布式平均SOC估计器实现分布式发电机（dg）之间的平衡荷电状态，而功率共享调节器确保基于PV-BES的dg之间的比例功率共享。这些调节器产生两个频率校正项，然后将其添加到微电网额定频率中，以生成低级控制器的参考。通过OPAL-RT实时仿真验证了所提分布式控制的性能，验证了所提分布式控制在孤岛和并网两种运行模式下实现PV-BES混合发电机组频率调节、SOC平衡和有功功率共享的有效性。
In this paper, we propose a droop-free distributed frequency control for the hybrid photovoltaic and battery energy storage (PV-BES) based microgrid. A distributed state of charge (SOC) balancing regulator achieves balanced SOC among the distributed generators (DGs) with BES utilizing a distributed average SOC estimator and the power sharing regulator ensures proportional power sharing among the PV-BES based DGs. These regulators generate two frequency correction terms which are then added to the microgrid rated frequency to generate references for the lower level controllers. The performance of the proposed distributed control is validated through real-time simulations in OPAL-RT, which demonstrates the effectiveness of the proposed control in achieving frequency regulation, SOC balancing, and active power sharing in the hybrid PV-BES units under both islanded and grid-connected operation modes.