Linearization and Acceleration Strategy of Unit Commitment Model Incorporating Cascade Hydropower

This paper establishes a hydro-thermal unit commitment model incorporating cascaded hydropower stations. Due to the characteristics of high dimensionality and strong coupling between constraints, this paper adopts linearization methods for nonlinear objectives and constraints after considering the requirements of solving efficiency and calculation accuracy. It proposes corresponding Benders decomposition and heuristic solving methods, and solves the model using IEEE 118 and 300-bus systems.