Integration of power-to-hydrogen in day-ahead security-constrained unit commitment with high wind penetration

The increasing integration of variable wind generation has aggravated the imbalance between electricity supply and demand. Power-to-hydrogen（P2H） is a promising solution to balance supply and demand in a variable power grid, in which excess wind power is converted into hydrogen via electrolysis and stored for later use. In this study, an energy hub（EH） with both a P2H facility（electrolyzer） and a gas-to-power（G2P） facility（hydrogen gas turbine） is proposed to accommodate a high penetration of wind power. The EH is modeled and integrated into a security-constrained unit commitment（SCUC） problem, and this optimization problem is solved by a mixed-integer linear programming（MILP） method with the Benders decomposition technique. Case studies are presented to validate the proposed model and elaborate on the technological potential of integrating P2H into a power system with a high level of wind penetration（HWP）.