Multiobjective Heuristic Search for Service Restoration in Electric Distribution Networks

Power system distribution networks can face emergency situations, defined by the interruption of the power supply in certain regions. As certain quality of service limits must be maintained, especially those related to interruption frequency and duration, efforts should be made to reduce or eliminate the lack of services in any region. The main objective of service restoration is to minimize the number of consumers affected by the fault, transferring them to distribution support feeders to restore power while maintaining electrical and operational conditions, such as radial network configuration, equipment and voltage drop limits. This paper proposes a multiobjective heuristic search method that considers two criteria: the maximization of the restored load and the minimization of the number of switching operations.