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Recent Advances in Isolated Power Systems
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Recent Advances in Isolated Power Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F1: Electrical Power System".

Deadline for manuscript submissions: closed (5 December 2023) | Viewed by 9036

Special Issue Editors

Dr. Benjamín González-Díaz

E-Mail Website
Guest Editor
Department of Industrial Engineering, Universidad de La Laguna, Calle Padre Herrera, 38200 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
Interests: energy and environment; renewable energy production systems; sizing and installations; development of third generation photovoltaic cells and silicon-based cells
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ricardo Guerrero-Lemus

E-Mail Website
Guest Editor
Department of Physics, University of La Laguna, 38200 San Cristóbal de La Laguna, Spain
Interests: energy communities; renewable energy; energy regulation

Special Issue Information

Dear Colleagues,

Nowadays, electrical systems are facing changes to reduce the emissions related with the electrical generation. These decarbonization processes acquire major relevance in isolated power systems, mainly due to the dependence of external resources, complex management in comparison with largely grid connected regions, and the challenges to incorporate renewable energies, electrical vehicles, and energy communities into isolated grids.

This Special Issue aims to present and disseminate the most recent advances related to the theory, design, modelling, application, control, condition monitoring, sustainable scenarios, and energy policy to advance in the decarbonization of the isolated power systems

Topics of interest for publication include, but are not limited to:

  • Advances in of power electronics and renewable energy controlling;
  • Energy management in isolated power systems;
  • Technical requirements of energy generators;
  • Energy forecast applied to isolated power systems;
  • Decarbonization scenarios and energy policy impact on the sustainable development in isolated power systems;
  • Renewable energies production and management;
  • Electrical vehicles deployment;
  • Emission reduction in isolated systems.

Dr. Benjamín González-Díaz
Prof. Dr. Ricardo Guerrero-Lemus
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • isolated power systems
  • renewable energies
  • electrical vehicles
  • energy management

Published Papers (5 papers)

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Research

25 pages, 2537 KiB  
Article
Well-to-Wheels for Light-Duty Vehicle Powertrains by Segments in Isolated Systems
by Alfredo J. Ramírez-Díaz, Francisco J. Ramos-Real and Josue Barrera-Santana
Energies 2023, 16(3), 1018; https://doi.org/10.3390/en16031018 - 17 Jan 2023
Cited by 3 | Viewed by 1789
Abstract
The transportation sector has the highest energy demand worldwide and bears the primary responsibility for CO2 emissions. Electromobility has emerged as the most feasible way to alleviate this problem. However, its potential depends heavily on the development of renewable energies. Island regions [...] Read more.
The transportation sector has the highest energy demand worldwide and bears the primary responsibility for CO2 emissions. Electromobility has emerged as the most feasible way to alleviate this problem. However, its potential depends heavily on the development of renewable energies. Island regions raise additional barriers to electromobility due to their heavy dependence on fossil fuels. This article addresses this challenge by presenting a comprehensive well-to-wheel framework to assess the levels of efficiency and CO2 emissions of electromobility options such as battery and plug-in electric vehicles (BEVs and PHEVs). The results were compared with those for internal combustion engine vehicles (ICEVs). The framework proposed takes account of various factors including the extraction, refining, and transport of oil, different segments of land vehicles, and electricity system operations. The framework is demonstrated with a case study of the Spanish Canary archipelago. The results show that BEVs improve efficiency and CO2 emissions by around 30% compared to ICEVs on islands where the share of renewable energies is higher than 21%. In contrast, limited renewable generation may lead to BEVs polluting up to 15% more than ICEVs. PHEVs should be considered as a suitable alternative if the share of renewable generation is higher than 35%. Full article
(This article belongs to the Special Issue Recent Advances in Isolated Power Systems)
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16 pages, 3971 KiB  
Article
Doubly Fed Induction Machine-Based DC Voltage Generator with Reduced Oscillations of Torque and Output Voltage
by Grzegorz Iwański, Mateusz Piwek and Gennadiy Dauksha
Energies 2023, 16(2), 814; https://doi.org/10.3390/en16020814 - 10 Jan 2023
Cited by 2 | Viewed by 1383
Abstract
The doubly fed induction machine (DFIM)-based DC voltage generator is equipped with a stator-connected diode rectifier. The six-pulse diode rectifier as a nonlinear circuit introduces harmonics in the stator and rotor current and distorts the machine stator voltage, as well as the stator [...] Read more.
The doubly fed induction machine (DFIM)-based DC voltage generator is equipped with a stator-connected diode rectifier. The six-pulse diode rectifier as a nonlinear circuit introduces harmonics in the stator and rotor current and distorts the machine stator voltage, as well as the stator flux. This causes electromagnetic torque oscillations and instantaneous power components oscillations. The torque oscillations adversely impact the mechanical parts of the drive-train and oscillations of the p component of instantaneous power influence DC-bus voltage oscillations. The oscillations can be somewhat cancelled by control methods. However, cancellation of electromagnetic torque is not strictly coupled with cancellation of oscillations of the p component of instantaneous power. The paper presents an analysis of influence of the control methods aimed at a reduction of torque oscillations on the output voltage oscillations level in the stand-alone DFIM-based DC voltage generator. Field-oriented control FOC with current controllers and space vector modulation-based direct torque control DTC-SVM with flux module regulation have been compared with control in which electromagnetic torque is one of the commanded variables, whereas the second variable is the dot product of stator flux and rotor current space vectors. The contributions of this paper are the introduction of a new variable in the second control path in the DTC-SVM method instead of flux vector length and the proof that it can reduce torque and DC-bus voltage oscillations in the DFIG-DC system. Additionally, this paper reveals that for proper stator-to-rotor-turns ratio of a doubly fed machine necessary for reduction of the rotor converter power, lower DC-bus voltage can be obtained than is required for full realization rotor side voltage requested by rotor current controllers. This is the reason why, regardless of the control method, torque oscillations cannot be always fully cancelled, and a comparative study of the methods at these conditions has been conducted in simulation and in laboratory tests. Full article
(This article belongs to the Special Issue Recent Advances in Isolated Power Systems)
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17 pages, 4479 KiB  
Article
A Wind Power Probabilistic Model Using the Reflection Method and Multi-Kernel Function Kernel Density Estimation
by Juseung Choi, Hoyong Eom and Seung-Mook Baek
Energies 2022, 15(24), 9436; https://doi.org/10.3390/en15249436 - 13 Dec 2022
Cited by 3 | Viewed by 1356
Abstract
This paper proposes a wind power probabilistic model (WPPM) using the reflection method and multi-kernel function kernel density estimation (KDE). With the increasing penetration of renewable energy sources (RESs) into power systems, several probabilistic approaches have been introduced to assess the impact of [...] Read more.
This paper proposes a wind power probabilistic model (WPPM) using the reflection method and multi-kernel function kernel density estimation (KDE). With the increasing penetration of renewable energy sources (RESs) into power systems, several probabilistic approaches have been introduced to assess the impact of RESs on the power system. A probabilistic approach requires a wind power scenario (WPS), and the WPS is generated from the WPPM. Previously, WPPM was generated using a parametric density estimation, and it had limitations in reflecting the characteristics of wind power data (WPD) due to a boundary bias problem. The paper proposes a WPPM generated using the KDE, which is a non-parametric method. Additionally, the paper proposes a reflection method correcting for the boundary bias problem caused by the double-bounded characteristic of the WPD and the multi-kernel function KDE minimizing the effect of tied values. Six bandwidth selectors are used to calculate the bandwidth for the KDE, and one is selected by analyzing the correlation between the normalized WPD and the calculated bandwidth. The results were validated by generating WPPMs with WPDs in six regions of the Republic of Korea, and it was confirmed that the accuracy and goodness-of-fit are improved when the proposed method is used. Full article
(This article belongs to the Special Issue Recent Advances in Isolated Power Systems)
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21 pages, 2314 KiB  
Article
Determining Factors of Consumers’ Choice of Sport Utility Vehicles in an Isolated Energy System: How Can We Contribute to the Decarbonization of the Economy?
by Alfredo J. Ramírez-Díaz, Francisco J. Ramos-Real, María Gracia Rodríguez-Brito, María Carolina Rodríguez-Donate and Andrés Lorente de las Casas
Energies 2022, 15(17), 6454; https://doi.org/10.3390/en15176454 - 3 Sep 2022
Cited by 4 | Viewed by 1965
Abstract
This paper analyses the profile of individuals who decide to purchase a Sport Utility Vehicle (SUV) in a medium-sized isolated island system such as Tenerife Island. To achieve this objective, we used a survey conducted in 2017 to identify the characteristics of the [...] Read more.
This paper analyses the profile of individuals who decide to purchase a Sport Utility Vehicle (SUV) in a medium-sized isolated island system such as Tenerife Island. To achieve this objective, we used a survey conducted in 2017 to identify the characteristics of the individuals most likely to choose an SUV or another type of vehicle or be undecided. Subsequently, a discrete choice model was estimated to assess the probability that an individual chooses one of the three options as a function of their socio-economic characteristics, mobility routines, vehicle attributes and psychosocial traits. The results show the need to adopt energy policy measures related to vehicle choice, as they put the fulfilment of the decarbonization objectives for the energy transition in the Canary Islands at risk. Firstly, the authorities should carry out campaigns to achieve a more environmentally conscious behaviour by highlighting the higher consumption and emission levels of this type of vehicle. Secondly, subsidies for more efficient new vehicles and taxation should promote the purchase of low-emission vehicles to compensate for the greater willingness to pay of SUV buyers. In particular, purchase taxation should be linked to emission levels rather than only considering power, engine characteristics or labelling. Full article
(This article belongs to the Special Issue Recent Advances in Isolated Power Systems)
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19 pages, 8698 KiB  
Article
Sustainability Analysis and Scenarios in Groundwater Pumping Systems: A Case Study for Tenerife Island to 2030
by Daniella Rodríguez-Urrego, Leonardo Rodríguez-Urrego, Benjamín González-Díaz and Ricardo Guerrero-Lemus
Energies 2022, 15(15), 5635; https://doi.org/10.3390/en15155635 - 3 Aug 2022
Viewed by 1843
Abstract
Groundwater pumping systems using photovoltaic (PV) energy are increasingly being implemented around the world and, to a greater extent, in rural and electrically isolated areas. Over time, the cost of these systems has decreased, providing greater accessibility to freshwater in areas far from [...] Read more.
Groundwater pumping systems using photovoltaic (PV) energy are increasingly being implemented around the world and, to a greater extent, in rural and electrically isolated areas. Over time, the cost of these systems has decreased, providing greater accessibility to freshwater in areas far from urban centers and power grids. This paper proposes a novel sustainability analysis of the groundwater pumping systems in Tenerife Island as an example of a medium-size isolated system, analyzing the current status and the business-as-usual projection to 2030, considering the water reservoirs available and the final use of water. The 2030 projection focused on the PV deployment, evaluation of the levelized cost of electricity (LCOE), and the availability of the groundwater resource. HOMER software was used to analyze the LCOE, and ArcGIS software was used for the visual modeling of water resources. As a result, the average LCOE for a purely PV installation supplying electricity to a pumping system in Tenerife is 0.2430 €/kWh, but the location and characteristic of each pumping system directly affect the performance and costs, mostly due to the solar availability. Full article
(This article belongs to the Special Issue Recent Advances in Isolated Power Systems)
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