OPTIMAL NETWORK RECONFIGURATIONS IN DISTRIBUTION-SYSTEMS .1. A NEW FORMULATION AND A SOLUTION METHODOLOGY

A new formulation of the network reconfiguration problem for both loss reduction and load balancing taking into considerations load constraints and operational constraints is presented. The number of switch-on/switch-off operations involved in network reconfiguration is put into a constraint. The new formulation is a constrained, multi-objective and non-differentiable optimization problem with both equality and inequality constraints. A two-stage solution methodology based on a modified simulated annealing technique and the e-constraint method for general multi-objective optimization problems is developed. A salient feature of the solution methodology is that it allows designers to find a desirable, global non-inferior solution for the problem. An effective scheme to speed up the solution methodology is presented and analyzed. © 1990 IEEE