Decentralized Fast Delayed Signal Cancelation Secondary Control for Low Voltage Ride-Through Application in Grid Supporting Grid Feeding Microgrid

Frontiers in Energy Research

Elutunji Buraimoh¹  Innocent E. Davidson¹  Fernando Martinez-Rodrigo² 

[1] Department of Electrical Power Engineering, Durban University of Technology, Durban, South Africa;Department of Electronics Technology, University of Valladolid, Valladolid, Spain;

关键词: inverter;    microgrid;    fault ride though (FRT);    low voltage ride-through (LVRT);    delayed signal cancelation (DSC);   

DOI  :  10.3389/fenrg.2021.643920

来源: Frontiers

【 摘 要 】

In this study, a distributed secondary control is proposed alongside the conventional primary control to form a hierarchical control scheme for the Low Voltage Ride-Through (LVRT) control and applications in the inverter-based microgrid. The secondary control utilizes a fast Delayed Signal Cancelation (DSC) algorithm for the secondary control loop to control the reactive and active power reference by controlling the sequences generated. The microgrid consists of four Distributed Energy Resources (DER) sources interfaced to the grid through interfacing inverters coordinated by droop for effective power-sharing according to capacities. The droop also allows for grid supporting application for microgrid’s participation in frequency and voltage regulation in the main grid. The proposed decentralized fast DSC performance is evaluated with centralized secondary and traditional primary control using OPAL-RT Lab computation and MATLAB/SIMULINK graphical user interface for offline simulations and real-time digital simulator verification. This study presents and discusses the results.

【 授权许可】

CC BY