Multi objective service restoration of distribution systems using user centered methodology
Abstract A multi objective problem formulation of service restoration and a three stage methodology tailored to user centered service restoration for large scale, unbalanced distribution systems are presented. One feature is that the experience and engineering judgment of operators is integrated into the three stage methodology. Since solutions suggested by a method need to be compromised with engineering judgment, this methodology involves system users (at Stage II) meta heuristics (at Stage I) and local heuristics in combination with restoration strategies (at Stage III) for efficient and robust performance in service restoration. An adaptive K means method is incorporated in the proposed group based PSO (Stage I) for global search. It also assists users in their decision making. Evaluation results of the proposed user centered methodology on the IEEE 123 node test system and a 1101 node practical unbalanced network show its effectiveness and flexibility in restoring service after faults.