Propuesta multiobjetivo basada en lógica borrosa para microrredes renovables residenciales hibridadas con hidrógeno

Abstract

To adapt production to household energy demand at all times it is necessary, for microgrids based on renewable energy sources (RES), to use energy storage systems in order to accumulate excess energy produced by renewable energies and use them in times of production deficit, due to the intermittent nature of RES. On the other hand, as hydrogen hybridized renewable microgrids are composed of different production and storage elements with different characteristics and dynamics, i.e., they have a multicomponent nature, so it is essential to implement energy management systems (EMS), in order to find the best services for each element of the microgrid, which will jointly achieve a correct operation of the microgrid. In that sense, the proposal of this article is to implement an EMS based on a multivariable and multistage fuzzy logic controller (FLC) that faces a multi-objective problem to improve the behavior of the microgrid elements in terms of lifetime, efficiency and operation costs. To achieve that objective, both the power balance, performance and degradation of the microgrid elements and the costs and benefits of connecting the microgrid to the main power grid will be considered. Compared to traditional EMS, such as those based on models or heuristic techniques, the proposed EMS implies, according to the results obtained, a higher performance and a higher economic benefit.