Development of the Stochastic Medium Term Market Simulation Model s-MTSIM

A large scale stochastic linear programming model, called s-MTSIM, has been developed to solve the unit commitment (UC) problem for power systems characterized by high levels of renewable energy sources penetration. Due to the high computational costs, mixed integer optimization is replaced by a two-step procedure: a continuous stochastic LP model and a heuristic calculation of UC. This work is part of a doctoral thesis and was carried out as a collaboration between RSE SpA and Università degli Studi di Bergamo. s-MTSIM model has been developed starting from an existing deterministic medium term power system simulator originally developed by RSE SpA.