Abstract
To enhance the resilience of transmission networks with offshore wind farms (OWFs) and pump hydro energy storage systems (PHESSs) towards typhoons, a resilient unit commitment scheme is proposed. This problem is formulated as a two-stage robust optimization problem, where the uncertain impacts of typhoons on OWF output, transmission line failures, and demands are captured by a robust uncertain set with chance constraints. This uncertainty set is embedded into a two-stage robust unit commitment model, where the commitment of thermal units is optimized in the first-stage and PHESSs are scheduled in the second-stage optimization as the emergency resources. The two-stage robust optimization problem is solved using the column and constraint generation (C&CG) algorithm. Simulations are performed on the modified IEEE-RTS test systems with real OWF output during Typhoon Higos, and the effectiveness of proposed scheme is verified regarding the reduction of worst case load shedding.
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