Abstract：With the increasing penetration of wind power in the power system, the intra-period fluctuation of wind power gets more and more violent, which may induce the scarcity of intra-period ramping capacity and threaten the intra-period operational security of the power system. In this paper, the model and solution algorithm of continuous-time modeling based robust unit commitment is proposed considering beyond-the-resolution (BtR) wind power uncertainties, which can fully access the intra-period wind power variation and give the robust solution to the BtR uncertainties. First, the continuous-time robust unit commitment model considering BtR uncertainties is established, and the BtR uncertainty model is analyzed. Second, by the solution space transformation, the optimization problem is shifted from the algebraic space to the function space for tractable computation. The column-and-constraint generation (C&CG) algorithm is adopted to solve the optimization problem in the function space and the solution is then recovered to the algebraic space. Finally, the simulation results validate that BtR uncertainties can be fully considered in the proposed method so as to enhance the robustness of the scheduling solution.
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2021, Vol. 36 
