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Control and Monitoring of Renewable Energy Power Systems

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

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 4545

Special Issue Editors


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Guest Editor
Department of Engineering Science, Babeș-Bolyai University, Cluj-Napoca, Romania
Interests: hydraulics; vibration; damage detection; multidisciplinary; FEM analysis
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Engineering Science, Babeș-Bolyai University, Cluj-Napoca, Romania
Interests: hydraulics; vibration; damage detection; multidisciplinary; FEM analysis

E-Mail Website
Guest Editor
Department of Engineering Science, Babeș-Bolyai University, 400347 Cluj Napoca, Romania
Interests: renewable energy; energy policy; energy conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue on the control and monitoring of turbines in electricity production systems from renewable sources.

Monitoring and control of renewable energy production systems (e.g., microhydroturbines, wind power plants, photovoltaic power plants, fuel cells, geothermal) is important and widely used to streamline electricity production.

Hydropower, biofuel, and geothermal plants as well as wind farms will be a mainstay of the global energy transition, but large-scale deployment will present a number of technical and non-technical challenges for exploiting the potential of energy in a sustainable way.

In the actual context of encouraging the reduction of pollution by expanding the use of renewable energy resources, it is necessary to increase the efficiency of energy production systems based on unconventional resources.

Within technical control systems, surveillance functions must also be performed, which are put in practice through automatic monitoring, protection, signaling, and fault diagnosis. Early identification of faults and breakdowns leads to savings and improves the security of electricity supply. Remote monitoring of renewable energy power systems has the purpose to reduce the response time in the maintenance and troubleshooting process, as well as increase the optimization of the controlled systems. Therefore, monitoring and control of those systems are essential to ensure operational safety and performance.

We are looking for original papers on innovative contributions, based on the (non-exclusive) following topics:

  • Development of resource assessment techniques, modeling, control algorithms;
  • Environmental sustainability of energy systems;
  • Concept innovations systems: design, installation, operation, performance, optimization, and control; 
  • Operations and maintenance: reliability, maintainability, predictive maintenance, economics;
  • Condition monitoring, early diagnosis;
  • Artificial intelligence.

Dr. Cornel Hatiegan
Dr. Zeno-Iosif Praisach
Dr. Cristian Paul Chioncel
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

  • modeling
  • environmental sustainability of energy systems
  • optimization
  • control algorithm
  • artificial intelligence
  • early diagnosis

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Published Papers (2 papers)

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Research

10 pages, 2421 KiB  
Article
Study of the Accelerated Degradation of the Insulation of Power Cables under the Action of the Acid Environment
by Marius Florian Preduș, Cristinel Popescu, Eugen Răduca and Cornel Hațiegan
Energies 2022, 15(10), 3550; https://doi.org/10.3390/en15103550 - 12 May 2022
Cited by 2 | Viewed by 2268
Abstract
Over operation time, there are a number of internal and external factors that change the characteristics of dielectric materials that are part of the electrical equipment. In areas with high pollution, an important requirement is the acidic chemical compounds in the soil in [...] Read more.
Over operation time, there are a number of internal and external factors that change the characteristics of dielectric materials that are part of the electrical equipment. In areas with high pollution, an important requirement is the acidic chemical compounds in the soil in which the power cables are laid, which penetrate the insulation by infiltration, resulting in changes in the parameters of electrical insulation and causing a decrease in operating time. The paper is focused on the analysis, through a series of experimental determinations, of the effects of stresses to which the power cables laid in acidic environments are subjected, by simulating the operating conditions in the laboratory, obtaining concrete results. It also describes the direct current test installation used in the laboratory and presents the two stages of testing the cable sample inserted in the electrolyte, the first being a stage of accelerating the degradation of the insulation by supplying higher voltages to require insulation, and the second stage being the testing in the absence of the electric field, under the direct action of the chemical compounds from the installation tank. Given that in alternating current, the electric field causes an additional heating of the dielectric due to energy losses by electric polarization, the test is performed in direct current, precisely to be able to monitor the variation of insulation resistance in relation to temperature and losses through conduction currents, as a result of the Joule–Lenz effect and not as a result of the dielectric polarization process. At the same time, the power of the direct current source used is lower compared to that of an alternative current test source and does not contribute to the generation of electrical discharges during testing. Full article
(This article belongs to the Special Issue Control and Monitoring of Renewable Energy Power Systems)
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18 pages, 3606 KiB  
Article
Contributions to Modeling, Simulation and Controlling of a Pumping System Powered by a Wind Energy Conversion System
by Dorin Bordeașu, Octavian Proștean and Cornel Hatiegan
Energies 2021, 14(22), 7696; https://doi.org/10.3390/en14227696 - 17 Nov 2021
Cited by 9 | Viewed by 1538
Abstract
At present, the energy consumption of the pumping unit represents the highest cost in operating a pumping system. Due to this reason, this paper proposes a reliable and robust solution for integrating a wind energy conversion system (WECS) into an already existing pumping [...] Read more.
At present, the energy consumption of the pumping unit represents the highest cost in operating a pumping system. Due to this reason, this paper proposes a reliable and robust solution for integrating a wind energy conversion system (WECS) into an already existing pumping system (PS), without being overly intrusive for the PS, and without altering the control strategy or the hardware of the commercial WECS. The current work begins by presenting the modeling undertaken, which includes a WECS with pitchable blades, a doubly-fed induction generator (DFIG) together with its power converter, a centrifugal pump, an induction motor (IM) with its power converter, and an irrigation network with a pressure transducer. The second part consists of the proposed three-level controller: a general controller that regulates the WECS power demand according to the pumping pressure reference; three second-level controllers; two necessary for the WECS and one for the PS; and three first level controllers, two for controlling the power converters of the WECS generator and one for controlling the pump motor power converter. Finally, the simulation results of the proposed system control strategy are presented, showing its technical feasibility and good performance. Full article
(This article belongs to the Special Issue Control and Monitoring of Renewable Energy Power Systems)
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