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Security-Constrained Optimal Scheduling of Transmission Outages With Load Curtailment

Transmission outage scheduling from a transmission facility owner's (TFO's) perspective in a deregulated electricity market has been one of the lesser explored topics in academia. This paper presents a security-constrained one-step optimal transmission outage scheduling model that can be used by any TFO. The proposed mixed-integer linear programming model incorporates a new load shedding methodology that allows transmission branches to radially connected and in-and-out connected buses to be taken out-of-service under outage and contingency conditions, which further improves its versatility. The proposed model is tested on two networks, a simple four-bus system and the 62-bus AltaLink 500 kV/240 kV backbone system in Alberta.