REE&PQJ-24. ISSN: 3020-531X Index
Renewable Energies, Environment & Power Quality Journal (REE&PQJ)
Volume 24, Issue 2, January 2026-> Go to Issue 3
If you want to see the articles published by RE&PQJ until 2023, click here.
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125-130 |
121 |
Optimal energy concept for decarbonisation of sea-buckthorn M.I. Roldán, R. Kansara Department of Simulation and Virtual Design Institute of Low-Carbon Industrial Processes, German Aerospace Center. Cottbus. Germany Abstract The decarbonisation of the industrial sector is required to achieve the objectives defined within the European Climate and Energy framework, since industry accounts for 37% of the total global energy consumption and for a quarter of global energy system CO2 emissions [1]. In this context, this work aims the decarbonisation of a sea-buckthorn processing plant using structural and operational optimisation for the analysis of proposed energy supply concepts based on the integration of renewable energy sources, energy conversion components and storage systems...READ MORE |
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131-136 |
122 |
Inductive Wireless Power Transfer for Autonomous Underwater Vehicles using Split Core Transformer and Iñigo Rozas, Iñigo Martínez de Alegría, Alberto Otero, Endika Robles, Iker Aretxabaleta Applied Electronics Research Team (APERT), University of the Basque Country (UPV/EHU) Bilbao School of Engineering. Spain Abstract Unmanned Underwater Vehicles (UUVs) are pivotal for underwater exploration and maintenance. Autonomous Underwater Vehicles (AUVs), with their potential to reduce operational time and environmental impact, are gaining increased interest. However, they face important technological challenges, particularly in power supply. This study focuses into the application of Inductive Wireless Power Transfer (IWPT) for continuous AUV operation, employing tightly coupled split core transformers (SCT) designed for near-field power transfer...READ MORE |
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137-142 |
123 |
Development of a Thermal Model of a High-Voltage Insulated Cable using the Finite Element Method to Improve the Grid Integration of Renewable Energies S. Bustamante(1), A. González(2), M. Mañana(1), M. Muñoz(2), A. Arroyo(1), J. Bengoechea( 2) 1. Department of Electrical and Energy Engineering. Universidad de Cantabria. Spain 2. Lumiker Aplicaciones Tecnológicas (RDT company), Parque Tecnológico de Bizkaia. Spain Abstract The increase of renewable energies in the currentlandscape makes Dynamic Line Rating (DLR) of transmission and distribution lines very meaningful to drive the production of these renewable energies. In order to be able to operate the lines dynamically, even in emergency situations, it is necessary to know the behaviour of the cables in detail. In particular, this study focuses on the dynamic management of high-voltage insulated cables...READ MORE |
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143-148 |
124 |
Development of the energy hub GEDERlab at Universitat Politècnica de València for encouraging the integration of G. Escrivá-Escrivá(1), D. Dasí-Crespo(1), M. Segarra-Balaguer(1), E. Quiles-Cucarella(2), C. Roldán-Blay(1), C. Roldán-Porta(1) 1. Institute for Energy Engineering. Universitat Politècnica de València. Spain 2. Instituto Universitario de Automática e Informática Industrial. Universitat Politècnica de València. Spain Abstract Renewable energies stand out as fundamentalsolutions to address climate change, providing environmental benefits and promoting energy independence. However, renewable plants face challenges such as intermittency, initial costs, and visual effects on the surroundings. The GEDERlab is an innovative energy hub developed at the Universitat Politècnica de València (UPV) that integrates four renewable energies (solar, wind, biogas, and hydraulic) to tackle these challenges...READ MORE |
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149-154 |
125 |
Design and Implementation of a Biogas Pilot Plant for Bioaugmentation Strategies in a rural municipality D. Dasí-Crespo(1), A. Carcerller-Toselli (2), C. Roldán-Blay(1) , G. Escrivá-Escrivá (1), C. Roldán-Porta(1) 1. Institute for Energy Engineering. Universitat Politècnica de València. Spain 2. Ayuntamiento de Aras de los Olmos. Valencia. Spain Abstract The transition towards renewable energy sources isimperative for achieving sustainability and mitigating climate change impacts. Among various renewable energies, biogas stands out for its dual role in waste management and energy production. This study introduces the design and implementation of a biogas pilot plant aimed at exploring bioaugmentation strategies to enhance biogas yield and quality...READ MORE |
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155-160 |
126 |
Thermoelectric generator for energy production from R. Mecke, P. Kußmann Department of Automation and Computer Sciences. Harz University of Applied Science. Germany Abstract Thermoelectric generators (TEG) produce electrical energy from a temperature difference between the cold and hot side of TEG modules (Seebeck effect); in principle, they can be used at temperature differences greater than 3 K [1]. Thermoelectric energy generation is primarily known for supplying self-sufficient sensors or in exhaust systems of motor vehicle internal combustion engines [2], where high temperature differences of up to 700 K are used...READ MORE |
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161-166 |
127 |
Subsea DC power cable modelling and computational Frederico Oliveira Passos(1), José Maria de Carvalho Filho(1), José Carlos de Oliveira(2), Christel Enock Ghislain Ogoulola(1), Alex Reis(3), José Mauro Teixeira Marinho(4) 1. Federal University of Itajubá. Brazil 2. University of Uberlândia. Brazil 3. University of Brasília. Brazil 4. Petrobras S.A. Company. Rio de Janeiro. Brazil Abstract The growing number of applications involving thetransmission of electrical energy from AC sources for the purpose of interconnecting onshore/offshore AC networks has motivated several investigations to define the most appropriate topological and parametric structures for the purposes in question. In this scenario, the issue of electrical supplies for platforms for oil extraction arises to reduce greenhouse gases produced by local generation units...READ MORE |
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167-172 |
128 |
Laboratory-Based Investigation of Contactors Susceptibility to A. Fioravanti, A. Credo, E. Fiorucci, S. Mari, A. Prudenzi, A. Silvestri Department of Industrial and Information Engineering and Economics, University of L’Aquila. Italy Abstract Voltage sags pose substantial challenges in electrical systems, disrupting power supply and adversely impacting equipment. This paper outlines the issues arising from voltage sags, emphasizing their detrimental effects on electrical installations powered by relays and contactors. The study delves into the susceptibility of these critical components when faced with voltage fluctuations, exploring how sags influence their functionality...READ MORE |
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173-178 |
129 |
Use of a Decision Tree to Define Transformer Oil Contamination from On-Load Tap-Changer Gases to Ensure S. Bustamante(1), J. L. M. Lastra(2), M. Mañana(1), A. Arroyo(1) 1. Department of Electrical and Energy Engineering. Universidad de Cantabria. Spain 2. Faculty of Engineering and Natural Sciences. Tampere University. Finland Abstract Power transformers are one of the most importantand critical assets in the electricity distribution and transmission network. Power quality (PQ) can be disturbed when a power transformer is brought into or out of service, so it is very important to be sure of the reason for this action. Dissolved gas analysis (DGA) in oil can be used to diagnose the condition of transformer insulation...READ MORE |
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179-184 |
130 |
Moisture effect on the dielectric response of improved insulating papers impregnated with mineral oil I. Antolín(1), D. García(2), C. Olmo(1), F. Delgado(1), J. Torregrosa(3) 1. Departamento de Ingeniería Eléctrica y Energética, E.T.S.I.I.T., Universidad de Cantabria. Spain 2. High Voltage Research Group, School of Electrical and Electronic Engineering, Universidad del Valle, Cali. Colombia 3 .TMG Solutions, Barcelona. Spain Abstract The electrical insulation system, usually composedof cellulosic materials and mineral oil, is essential for the reliable operation of the power transformers. The dielectric system must be kept in prime condition to increase the lifetime of the machine. Moisture in these materials reduces the dielectric strength and enhances the rate of insulation ageing. Frequency Domain Spectroscopy (FDS) is a promising method to analyse the effect of moisture in oil-paper insulation system...READ MORE |
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185-191 |
131 |
Identification and application of indicators for the assessment of pumped hydro storage projects with renewable energy N. Naval(1), M.P. Martínez(2), J.M. Yusta(1) 1. Department of Electrical Engineering. EINA, Zaragoza University. Spain 2. Atalaya Generación. Zaragoza. Spain Abstract Pumped hydro storage is crucial in Europe's energystrategy to achieve a 100% renewable energy-based electricity system by 2050. As a consequence of the large number of factors involved and the variety of criteria included in a proper assessment of renewable generation projects with pumped hydro storage, this paper aims to identify and calculate technical, economic, environmental and social indicators in order to provide a tool to improve the decision-making process in this type of large-scale projects...READ MORE |
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192-196 |
132 |
Reliability enhancement through optimal placement of photovoltaic power plant and battery energy storage in K. Džodić(1), J. Krstivojević(1), O. Abarrategi(2), P. Eguia(2) 1. Department of Power Systems. School of Electrical Engineering, University of Belgrade. Serbia 2. Department of Electrical Engineering. EIB University of the Basque Country (UPV/EHU) Bilbao. Spain Abstract Integration of distributed generation (DG) unitscould reduce the duration of power outage for a certain number of consumers in distribution networks after a network failure. Prerequisites are that i) the DG unit has the technical characteristics that enable its islanded operation, the degree of automation of the distribution network allows it and ii) it is in accordance with the current technical regulations of the country...READ MORE |
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197-202 |
133 |
Comprehensive Guide to Microgrid Design: Application and P. Motevakel, C. Roldán-Blay, C. Roldán-Porta Institute for Energy Engineering. Universitat Politècnica de València. Spain Abstract Nowadays, it has become increasingly imperativeto pursue energy systems independent of centralized production, instead by employing decentralized resources such as renewable energy and responding promptly to localized demands, as microgrids exemplify. The concept of microgrids presents a promising solution to the challenges posed by traditional grid systems, offering resilience, sustainability, and efficiency. Despite the growing interest in microgrids, achieving their full potential requires a deep understanding of their diverse structures and design considerations...READ MORE |
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203-209 |
134 |
Power quality and efficiency functionalities for a three-level Dynamic Voltage Restorer on low voltage grids Andras Futo(1), Istvan Varjasi(1), Laszlo Stranyoczky(1), Andras Dan(2) 1. Department of Automation and Applied Informatics, Budapest University of Technology and Economics. Hungary 2. Department of Electric Power Engineering, Budapest University of Technology and Economics. Hungary Abstract Back-to-back PWM inverter based bidirectional dynamic voltage restorers (DVR) may have worse efficiency than mechanical or SCR based solutions, but they are able to provide a continuously variable voltage in series with the grid. As the injected waveform does not need to be sinusoidal, additional features may also be implemented in software. In this paper it is shown that the compensation of voltage harmonics, flicker, and even voltage transients are all possible to some extent...READ MORE |
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210-218 |
135 |
Ripple current control for single phase-shift dual active bridge Sz. Veréb, L. Stranyóczky, Z. Sütő, A. Balogh Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics. Hungary Abstract Nowadays, the need for isolated bidirectional DC/DC converters is growing. In these types of equipment, the dual active bridge topology is widespread, where mostly the transformer leakage inductance value determines its dynamic behavior. 219-223 |
136 |
Peak Current Mode Control for Grid-Connected Energy Storage László Stranyóczky, András Futó, Szabolcs Veréb, István Varjasi, Zoltán Sütő Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics. Hungary Abstract Nowadays, three-phase inverters are playing an increasingly important role in various applications, such as drives, solar systems, energy storage systems. The commonly used PI current control method in the d-q coordinate system satisfies the requirements of most of the cases. However, in some specific applications, such as a grid-connected inverter for an energy storage system, the PI controller response time may not be sufficient to meet the criteria...READ MORE |
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224-228 |
137 |
Optimization for the inlet channel and basin of a gravitational vortex turbine through the maximization of circulation Eduardo D. Madrid C, Juan C. Serrano, Elkin G. Flórez Department of Mechanical Engineering. Universidad de Pamplona. Colombia Abstract To optimize the energy generation of a gravitational vortex turbine, geometric modifications are proposed for its inlet channel and basin. These modifications include implementing a contraction in the channel, a technique commonly used in wind tunnels to accelerate the fluid and consequently improve vorticity in the basin. Three parameters were considered for optimization: the ratio between the diameter of the basin (D) and the length of the contraction (Lc), expressed as Lc/D; the size of the outlet edge (w2) relative to D, expressed as w2/D; and the height of the basin (H) relative to D, expressed as H/D...READ MORE |
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229-234 |
138 |
A Modular Multi-Technology Generator Model for EMT Stability Studies in Power Systems with Large Amounts of Converter- Jesús Castro Martínez(1), Santiago Arnaltes(1), José Luis Rodríguez(1), Javier Renedo(2), Edgar Nuño Martíne(2), Macarena Martín Almenta(2), Sergio Martínez Villanueva(2) 1. Department of Electrical Engineering, Carlos III University of Madrid. Spain 2. Red Eléctrica – Redeia . Alcobendas, Madrid. Spain Abstract This paper explores the integration of converter-based generation (CBG) into power systems, analyzing their impact on power system stability. For this purpose, a simulation tool consisting of comprehensive, aggregated models integrating several generation technologies into a power system for dynamic simulation has been developed to represent three prominent generation technologies: synchronous generation (SG), grid-following converters (GFL), and grid-forming converters (GFM)...READ MORE |
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235-240 |
139 |
Techno-economic analysis of using battolyser for primary frequency control in power system with wind power Zilong Wang(1), Ang Li(2) 1. Department of Electrical and Electronic Engineering, The University of Hong Kong. China 2. Asset management Department, CLP Power Hong Kong Limited, Hong Kong SAR, and Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR. China Abstract Large-scale integration of wind power brings newchallenges to the frequency stability of traditional power systems. The use of battery has become increasingly mature for frequency control. Recently, battolyser as a brand-new technology that combines the functions of battery and electrolyser, shows higher technical and economic potential owing to its hydrogen production ability...READ MORE |
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241-246 |
140 |
Experimental test bench for validating grid-forming strategies A. Ordoño(1), J. Rodriguez-Gongora(1), F.J. Asensio(1), J.A Cortajarena(2), A. Sanchez-Ruiz(3), M. Zubiaga(2) 1. Department of Electrical Engineering, Engineering School of Gipuzkoa, University of the Basque Country (UPV/EHU) Eibar. Spain 2. Department of Electronic Technology, Engineering School of Gipuzkoa, University of the Basque Country (UPVEHU) Eibar. Spain 3. Department of Electronic Technology, Engineering School of Vitoria-Gasteiz, University of the Basque Country (UPVEHU) Spain Abstract An experimental platform is developed with the aimof evaluating the performance of grid forming strategies in bidirectional electric vehicle (EV) chargers. The test bench is developed connecting a battery simulator to a grid simulator using a power converter that acts as an EV charger. This EV charger is composed of two stages: a DC/DC that increases the DC voltage of the battery, and a DC/AC that exchanges active and reactive power with the grid...READ MORE |
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