Abstract
What modelling time resolution will capture more accurately the actual performance of generators in the bulk power system operation? This paper analyses the generation portfolio in a unit commitment (UC) model that represents the generators’ behavior for a given demand and renewable generation on very short time intervals (down to 1 minute). The UC model is implemented in General Algebraic Modeling System (GAMS) using CPLEX solver, considering multiple generator constraints, such as ramp rate, maximum power output Furthermore, the results shed light on modelling experiences for the synergy between renewables and hydropower generation, contributing to an innovative and transparent market environment, proper power system organization and renewables integration, and regulatory framework design. Results show similar overall outcome on portfolio of generators under different time resolutions, but the behavior and insights on the operations clearly favor the application of finer time resolutions.
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