Model-based automated reconfiguration for fault isolation and restoration

This paper presents a new concept for automated reconfiguration control that is based on past model-based system analysis, load modeling and integrated system recovery analysis research and development. The approach uses a software based supervisory level control application that: (1) Monitors device level distribution protection device operation, (2) Generates isolation refinement and restoration switch operation lists using a model-based reconfiguration algorithm, and (3) Uses the switch operation list to remotely operate switches, reclosers and circuit breakers through Supervisory Control and Data Acquisition (SCADA) to speed up fault recovery actions and reduce the size of outaged areas. The paper provides an overview of the model-based analysis concepts used to implement the reconfiguration controller and analysis algorithm, and also discusses reconfiguration algorithm design and operation.