Energy storage device as a part of electric energy production system based on renewable energy sources

Abstract

This work deals whit an energy storage device as a part of electric energy production system based on renewable energy sources. The system supplies given load with known load diagram. Operational diagrams of individual units in the system are determined in an optimization procedure. The optimization goal is to supply given load with minimal use of conventional energy delivered from electric grid. Optimization is performed by a stochastic search algorithm called Differential Evolution for the system consisting of a solar power plant, wind turbine unit and flow battery connected to the load and to the electric grid. The optimization input data are given weather forecasting and forecasted load diagram.