Loss reduction in distribution systems: a new approach using partitioning techniques

A novel method of distribution system reconfiguration for loss reduction in a real-time implementation is presented. The distribution system is represented as a hypergraph, the edge weights being representative of line section losses. Using an eigenvector approach to generate a good partition and the Sanchis interchange method to obtain a near-optimal solution, the distribution system is partitioned into blocks of busses. Through the use of existing tie and sectionalizing switches, switching combinations are introduced to preserve the blocks. This technique allows for a heuristic to very rapidly determine switching combinations required for near-optimal configuration for loss minimization. Subsequent trials of this technique on actual feeder data demonstrate the benefits that it could bring to a utility.<>