System and method for real-time feeder reconfiguration for load balancing in distribution system automation

摘要

A system and method for real-time feeder reconfiguration are disclosed for load balancing in distribution system automation. The load balancing of transformers and feeders can be achieved by load transfer from an overloaded transformer or feeder to an adjacent transformer or feeder which is lightly loaded. An exemplary method can include defining an objective function as a sum of squares of the load deviation of transformers/feeders. The minimization of this objective function determines the optimal operating states (open or closed) of sectionalizing switches. The load balancing operation of transformer and feeder can be carried out by a single operation in which a plurality of switches is reconfigured.

主权项

1. A method for real-time feeder reconfiguration for load balancing of transformers and feeders by load transfer from an overloaded transformer or feeder to an adjacent transformer or feeder, the method comprising:
a. obtaining a System Load Index (SLI) of a distribution system and load indices of any transformers and feeders; b. optimizing an objective function formulated as a function of the SLI and load indices; and c. obtaining load balance by transferring load to align the load indices of a transformer and/or feeder with the SLI, wherein the optimizing step includes: defining the objective function as a sum of squares of a load deviation of transformers/feeders; minimizing the objecting function to determine optimal operating states including any open or closed states of isolating devices for load break and load pick up; and changing open positions of isolating devices subject to constraints of transformer and feeder capacities to avoid an overload condition for uniform and balanced distribution of load.