Abstract:
This study presents an application for a series VSC (Voltage Source Converter) in
distribution grids for power flow management. Series devices have been widely studied for
FACTS (Flexible AC Transmission Systems), however, more recently these devices have
gained increased interest in applications for loading balance in medium voltage distribution
grids. As the number of distributed generation (DG) units increases, increasing the capacity
and reliability of distribution grids, while maximizing the benefits of installed DGs and
loading behavior, is an ever more important task. In this work we describe a test system and
control proposals for a practical application of series converters interconnecting two
distribution feeders at 13.8kV under load variation disturbances. This approach provides
solutions when installed at the end of distribution lines by interconnecting two feeders,
resulting in capacity increases in the feeders without needing grid reconfigurations using a
small-rated series VSC.
