Hybrid Intelligent Modelling in Renewable Energy Sources-Based Microgrid. A Variable Estimation of the Hydrogen Subsystem Oriented to the Energy Management Strategy

Abstract

This work deals with the prediction of variables for a hydrogen energy storage system integrated into a microgrid. Due to the fact that this kind of system has a nonlinear behaviour, the use of traditional techniques is not accurate enough to generate good models of the system under study. Then, a hybrid intelligent system, based on clustering and regression techniques, has been developed and implemented to predict the power, the hydrogen level and the hydrogen system degradation. In this research, a hybrid intelligent model was created and validated over a dataset from a lab-size migrogrid. The achieved results show a better performance than other well-known classical regression methods, allowing us to predict the hydrogen consumption/generation with a mean absolute error of 0.63% with the test dataset respect to the maximum power of the system.

Conceptual Design of a Semi-Automatic Process Line for Recycling Photovoltaic Panels as a Way to Ecological Sustainable Production

“…Photovoltaic installations are very popular because they are available to most people, and their installation does not require as much capital as in the case of installations using other renewable energy sources which is confirmed by many authors in their works [1][2][3][4][5]. In addition, along with the development of technology, they are becoming cheaper and more effective way to obtain electricity [6][7][8].…”

“…These elements should be directed to warehouses, from which they go to industrial installations directly recycling or reselling this type of material. Then, laminates consisting of glass and photovoltaic cells laminated with EVA foil and Tedlar should be pre-shredded in the storage station (1). Successively, using an excavator, place them in a double-shaft shredder (2) for initial grinding.…”

Integration of Solar Photovoltaic Systems into Power Networks: A Scientific Evolution Analysis

“…Furthermore, another hot topic is technoeconomic analysis for hybrid power system (PV-wind) using mathematical techniques and HOMER, as can be seen from the following authors' keywords "techno-economic", "hybrid renewable system", and "HOMER" in Figure 9, and the cluster 3 (in blue) in Figure 8, and also stated in [90,95,96,115,116]. An additional hot topic is the optimization of hydrogen energy storage technologies for grid-connected applications as can be summarized from the following concepts "hydrogen", "fuel cell", "electrolyser", "modeling", "simulation", and "control" in Figure 9, and the cluster 5 (in purple) in Figure 8, as also mentioned in [104][105][106][107]117].…”

“…As shown in Figure 8, the main objective of the publications within cluster 5 (in purple color) is the modelization, simulation, and control of battery energy storage systems, especially hydrogen technologies for grid-connected applications, as can be concluded from the following keywords: "hydrogen", "fuel cell", "electrolyser", "modeling", "simulation", and "control", as mentioned in [104][105][106][107].…”

Sun, heat and electricity. A comprehensive study of non‐pollutant alternatives to produce green hydrogen

“…Based on the above, the hydrogen production from water is becoming increasingly important 29‐31 ; to the point that, following European directives and reports of the Clean Hydrogen Joint Undertaking, framed in EU Green Deal and Hydrogen Strategy, 32‐34 research on the production of hydrogen from water becomes a priority, among other alternatives such as biomass, within the technologies proposed to make a transition to more sustainable energy systems 35‐39 …”