Dynamic Reconfiguration and Fault Isolation for a Self-Healing Distribution System

Abstract

This paper proposes a new mathematical model for network reconfiguration and fault isolation in a self-healing distribution network. The proposed model dynamically operates automatic switches in the distribution network. The model includes a new approach to ensure network radiality by combining spanning tree constraints with a virtual network framework. Multiple faults and their associated clearance and recovery are taken into account. The mathematical model is formulated as a mixed integer linear program (MILP) that can be efficiently solved using commercial solvers such as CPLEX. The model is tested on a modified IEEE 123-bus distribution system with automatic switches, distributed generators (DGs) and energy storage system (ESS).