A Coordinated Control for SST Converters to Provide Grid Voltage Support during Normal Operation and Stabilize Islanding Operation during Grid Emergency
Publication Name
2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023
Abstract
In the context of increased penetration of renewable energy resources (RES) into the power grid, maintaining the voltage at the grid terminals under established standards and grid codes is challenging for the healthy and reliable operation of the grid. This paper introduces a novel approach involving the synchronized management of smart transformer converters. The primary objective is to not only maintain the voltage stability at the utility grid terminals but also to safeguard the load connected at the low voltage (LV) side from potential disruptions resulting from severe grid disturbances, emergency maintenance, or malfunctions in upstream grid components. Aside from its voltage support capabilities, another attractive feature is its ability to ensure uninterrupted power supply to the loads when the system transitions from grid-connected mode to the islanded mode during instances of grid disturbances. The Simulink platform in MATLAB was utilized to create a model of the test system, showcasing the voltage support capabilities of the smart transformer converters during grid-connected operation. Additionally, the islanding operation of the converter to feed the connected load was verified in response to disturbances in the upstream grid.
Open Access Status
This publication is not available as open access