Characterisation of electrical power systems based on electrical curves and their properties

[Abstract]: Due to the proliferation of renewable energy systems, the study of voltage and frequency stability is a crucial aspect. Recently, this problem has been approached from a purely geometrical point of view with interesting results. The present work investigates the properties of the so-called electrical curves described by arbitrary voltage or current vectors in Euclidean spaces. Through the invariants of these curves, certain indices can be constructed to detect abnormal operation or irregular characteristics in electrical power systems. Different scenarios and examples have been solved in this work to support the proposed theory

DSUALMH-A new high-resolution dataset for NILM

[Abstract]: The optimisation of energy consumption requires a reasonably accurate measurement, so an appropriate and advanced monitoring system of the relevant electrical variables in the electrical installations is of paramount importance. In this context, interoperable and highly configurable devices play a crucial role. A clear example is the OpenZMeter (OZM) which is an open source, open hardware, multi-purpose precision smart meter that can measure a wide range of electrical variables at a high sampling rate and provide processed data on power quality. The aim of this work is to show the use and possible applications of the new high sampling frequency data provided by the OZM device, which are much richer and more accurate than those obtained with other low-cost electrical meters. For this purpose, the opensource tool NILMTK has been used and adapted. Likewise, the use of two of the best known and most widely used algorithms such as Combinatorial Optimisation (CO) and the Factorial Hidden Markov Model (FHMM) has been considered, analysing the results obtained in the experimental study and offering a detailed comparison of the performance of the two different disaggregation algorithms using metrics for the different cases, as well as the incorporation of transients, and the comparison with other public DatasetsMinisterio de Ciencia, Innovación y Universidades; PGC2018-098813-B-C33Universidad de Almería; UAL2020-TIC-A208

A tool to select offshore renewable energy facilities. The case of study of shipyards and ports in Spain

[Abstract]: The objective of this work is to create a tool that serves to know the possibilities of manufacturing, storage, assembly, and maintenance of floating marine structures trying to take advantage of the ports and shipyards of Spain. This would help reduce costs and could make this type of energy more profitable. To this end, all the Spanish ports and shipyards have been analyzed, considering the characteristics and possibilities of each of them. In the study, those that did not meet certain essential conditions for the manufacture, storage, assembly, and maintenance of power generation equipment have been discarded.Ministerio de Ciencia e Investigación; /10.13039/50110001103

Reconversion of the shipbuilding sector: from production by project to mass production. What is its effect on the LCOE of a wave energy farm?

[Abstract]: The objective of this work has been to analyze the variation of different economic parameters (Levelized Cost Of Energy and Internal Rate of Return) for two possible ways of manufacturing: production by project to mass production. For this, 6 possible scenarios have been considered, taking into account the number of equipment manufactured and the economic parameters have been calculated in order to know which alternative provides greater economic viability, thus making the project more profitable.Ministerio de Ciencia e Investigación; /10.13039/50110001103

Analysis of the economic feasibility of different floating offshore renewable energies in Canary Islands

The aim of this paper is to study the suitability of different floating offshore energy technologies in a particular location in economic terms. In this context, their main initial investments and expenses have been taken into account in order to calculate the economic indicators of the economic feasibility study. These indicators are Internal Rate of Return, Net Present Value and Levelized Cost Of Energy. The case study has evaluated the Canary Islands (Spain) and three types of floating offshore renewable energies: offshore wind, wave energy and hybrid systems. The method created generates economic maps, which facilitates the election of the best area where install offshore renewable energy farms in the location selected. In addition, it also allows to select what is the best marine technology to be exploited in this area