RT Journal Article
T1 Sequence Control Strategy for Grid-Forming Voltage Source Converters Based on the Virtual-Flux Orientation under Balanced and Unbalanced Faults
A1 Dolado Fernández, Juan José
A1 Eloy-García Carrasco, Joaquín
A1 Arnaltes Gómez, Santiago
A1 Rodríguez Amenedo, José Luis
AB Renewable power generation has increased in recent years, which has led to a decrease in the use of synchronous generators (SGs). These power plants are mainly connected to the power system through electronic converters. One of the main differences between electronic converters connected to power systems and SGs connected to the grid is the current contribution during faults, which can have an impact on protection systems. New grid codes set requirements for fast current injection, but the converters' maximum current limitation during faults make it challenging to develop control strategies for such current contribution. This paper presents a positive and negative sequence current injection strategy according to the new Spanish grid code requirements for the novel grid-forming converter control algorithm based on virtual-flux orientation. The behavior of the proposed strategy is tested in a hardware in the loop (HiL) experimental set-up under balanced faults, meaning that the fault is symmetrically distributed among the three phases, and unbalanced faults, where the fault current is distributed asymmetrically between the phases.
PB MDPI
SN 1996-1073
YR 2023
FD 2023-04-01
LK https://hdl.handle.net/10016/38896
UL https://hdl.handle.net/10016/38896
LA eng
NO This paper was supported by the Spanish Research Agency under project reference PID2019-106028RB-I00/AEI/10.13039/501100011033.
DS e-Archivo
RD 1 sept. 2024