Mathematical modeling and economic efficiency assessment of autonomous energy systems with production and storage of secondary energy carriers

Abstract

A mathematical model has been developed to describe an autonomous energy system including energy plants (technologies) of two types: energy conversion (transport) and energy (energy carriers) storage. At the conversion plants, primary and secondary energy is converted into final energy and secondary energy of another type; in energy storages, secondary energy is accumulated for its further utilization. The mathematical programming problem is formulated; the objective function is the total discounted costs of the system creation and operation. The variants of the optimal structure of an energy system, including a diesel power plant, a biomass-fueled power plant and wind turbines, were found, depending on the price of diesel fuel and wind speed.