Development of hybrid models for the optimization of the energy management of an electrical network with connection to the grid, generation through renewable sources, storage and energy consumption.

Abstract

A hybrid model was developed for the energy management of a power system with connection to the grid, generation through renewable and non-renewable sources, battery storage, hydrogen production and energy consumption. The model allows not only to optimize the performance of the proposed power system but also to analyze energy production and accumulation facilities considering the supply and demand, the costs involved and the prices of buying and selling energy to the grid.

Analytical models were used to estimate wind and solar photovoltaic generation taking into account meteorological variables. For the storage in batteries, typical charge and discharge curves were considered and characteristic curves of high pressure electrolysers were used for hydrogen generation.

The complete model includes agents for decision making such as buying and selling energy to the grid, accumulation in batteries or hydrogen production. The validity of the model and the logics used were verified by proposing various scenarios, in which it was possible to observe the fluctuations in generation, accumulation and consumption.

The model can be applied to various cases from optimizing decisions in existing networks to allowing projects to be sized based on the expected demand and supporting the decision to incorporate different types of electricity generation and accumulation systems.