Despacho económico de corto plazo para el sistema hibrido de las islas Santa Cruz y Baltra, ante varios escenarios de aporte de energía renovable no convencional.

Abstract

This paper models a short-term (24 hours) Economic Dispatch of the Hybrid System of the Santa Cruz and Baltra Islands (thermal, wind, solar photovoltaic and battery bank generation) located in Galapagos. In a hybrid generation system, thermal generation has a great influence, as it is a complement to renewable energies, which depend on unmanageable natural resources. The randomness of solar radiation and wind lead the hybrid generation system to involve a stochastic treatment in forecasting the dispatch of its thermal, wind and photovoltaic generation resources and its battery storage systems. The stochastic analysis is based on the use of databases collected from measurement systems located in the field. The treatment of the data allows the establishment of probability distribution functions, Weibull distribution for solar radiation and Normal distribution for wind, whose use through the Monte Carlo simulation method allows the establishment of probable scenarios of generation dispatch of the electric system under analysis. In order to perform the most probable Economic Dispatch of a typical day, a Gams - Matlab interface is used, which through the mixed integer linear programming (MIP), performs the analysis of the parameters for the commitment of thermal units (unit commitment) and performing an hourly comparison of the thermal generation through the absolute error, it is possible to minimize the generation operating costs and supply the demand of the system.