Automated Load Balancing for distribution substation feeders

摘要

An automated load-balancing manoeuvring device (ALBM) connected in series with the low-voltage side of a distribution transformer for an electrical substation is disclosed. The ALBM comprises (N-1) matrix converters (101) for N feeders branched out of the main bus (203) at Y-winding of distribution transformer (100). A central processor (301) analyses a combinatorial optimization problem using the sensing currents of all feeders. This analysis provides a selective swap between heavily loaded phases and lightly loaded ones. Phase swap solutions are executed by microcontrollers (105) assigned to each matrix converter, which are responsible for proper driving of the switches. The ALBM dissipates low energy losses because the switching frequency can be desirably low depending on the dynamics of the load.