doiSerbia

Synchronization method for grid integrated battery storage systems during asymmetrical grid faults

Popadić Bane (University of Novi Sad, Novi Sad)
Katić Vladimir (University of Novi Sad, Novi Sad)
Dumnić Boris (University of Novi Sad, Novi Sad)
Milićević Dragan (University of Novi Sad, Novi Sad)
Čorba Zoltan (University of Novi Sad, Novi Sad)

This paper aims at presenting a robust and reliable synchronization method for battery storage systems during asymmetrical grid faults. For this purpose, a Matlab/Simulink based model for testing of the power electronic interface between the grid and the battery storage systems has been developed. The synchronization method proposed in the paper is based on the proportional integral resonant controller with the delay signal cancellation. The validity of the synchronization method has been verified using the advanced laboratory station for the control of grid connected distributed energy sources. The proposed synchronization method has eliminated unfavourable components from the estimated grid angular frequency, leading to the more accurate and reliable tracking of the grid voltage vector positive sequence during both the normal operation and the operation during asymmetrical grid faults.

Keywords: battery storage systems, synchronization, grid connected converter, asymmetrical grid faults

Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 042004: Integrated and Interdisciplinary Research entitled: Smart Electricity Distribution Grids Based on Distribution Management System and Distributed Generation