Title: Research on power distribution control of parallel microgrid based on adaptive capacitor algorithm

Authors: Zhanying Tong; Liutong Xu

Addresses: School of Electrical Engineering and Automation, Henan Institute of Technology, Xinxiang City, Henan Province, China ' School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, Xinxiang City, Henan Province, China

Abstract: In order to improve the stability and flexibility of microgrid operation, a droop control strategy for parallel microgrid power distribution based on adaptive virtual capacitor algorithm is proposed. The adaptive virtual capacitor is connected in parallel at the output of microgrid inverter to achieve accurate reactive power sharing of microgrid. The experimental results show that the average power sharing error of distributed generation under the control of adaptive virtual capacitor algorithm is 1.05%, which can effectively realise the accurate power distribution of microgrid and effectively avoid the problem of voltage drop. Add additional load to the system, and the distributed generation tends to be stable within 0.1s after a short transient process. The adaptive virtual capacitor algorithm has good adaptability to load changes, can effectively realise the accurate power distribution of parallel micro grid, and provides a new research idea for the operation optimisation of smart grid.

Keywords: microgrid; virtual capacitance; droop control; reactive power; power sharing.

DOI: 10.1504/IJWMC.2023.129083

International Journal of Wireless and Mobile Computing, 2023 Vol.24 No.1, pp.17 - 26

Received: 21 Apr 2022
Received in revised form: 05 Jul 2022
Accepted: 06 Aug 2022
Published online: 17 Feb 2023 *