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Energies
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Distributed and Renewable Power Generation 2018
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Distributed and Renewable Power Generation 2018

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

Deadline for manuscript submissions: closed (15 June 2019) | Viewed by 14564

Special Issue Editor

Prof. Dr. Michael Negnevitsky

E-Mail Website
Guest Editor
School of Engineering, University of Tasmania, Private Bag 65 Hobart, Tasmania 7001, Australia
Interests: power engineering; renewable and distributed generation; smart grids; computational intelligence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

“Distributed and Renewable Power Generation 2018” is a continuation of the previous and successful Special Issue, “Distributed and Renewable Power Generation”.

Distributed generation (DG) can be defined as any small-scale power generation technology located close to a consumer, either for reducing reliance on the power grid or for feeding the power directly into the grid. It may also be used to support the performance of weak transmission and distribution systems. Generators in the DG system can include both renewable and non-renewable energy resources. A system with DG has greater load carrying capacity and can correct for poor voltage profile, especially needed in rural areas and during peak hours. Given the current worldwide renewable energy initiatives and reluctance of most governments to invest in construction of new power generating plants, DG is becoming an attractive energy option with a reasonable investment potential. This Special Issue has a particular focus on topics related to smart grids, hybrid power systems with high renewable energy penetration, wind and solar power plant modeling and control, practical experience within high renewable energy penetration systems, and market design and operation.

Prof. Michael Negnevitsky
Guest Editor

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.

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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

  • distributed generation
  • high renewable energy penetration
  • smart grids
  • hybrid power systems
  • practical experience
  • market design and operation

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Published Papers (3 papers)

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Research

17 pages, 3484 KiB  
Article
A Comparative Study into Enhancing the PV Penetration Limit of a LV CIGRE Residential Network with Distributed Grid-Tied Single-Phase PV Systems
by Musharraf Wajahat, Hassan Abdullah Khalid, Ghullam Mustafa Bhutto and Claus Leth Bak
Energies 2019, 12(15), 2964; https://doi.org/10.3390/en12152964 - 1 Aug 2019
Cited by 20 | Viewed by 3616
Abstract
Photovoltaic distributed generation (PVDG) has seen tremendous growth in recent years, especially in the residential sector. Among other concerns, the voltage rise in AC networks is considered the most limiting factor in achieving increased PV penetration levels. A steady-state impact study is performed [...] Read more.
Photovoltaic distributed generation (PVDG) has seen tremendous growth in recent years, especially in the residential sector. Among other concerns, the voltage rise in AC networks is considered the most limiting factor in achieving increased PV penetration levels. A steady-state impact study is performed on a CIGRE low-voltage (LV) residential network. This paper compares six techniques to increase the PV penetration limit in the LV residential network, namely single-phase penetration (SPP), Distribution Scheme 1 (DS1), Distribution Scheme 2 (DS2), alternate phase penetration (APP), offline tap adjustment (OTA) and switched on-load tap adjustment (SOLTA). PSCAD software is used for this study. The best results are obtained for the DS2-SOLTA case that gives the minimum voltage magnitude and voltage unbalance in the system. The steady-state results are validated by a dynamic data study using measured solar irradiance and residential load data. A novel approach is also proposed for calculating the worst day from the data set. The obtained results verify the effectiveness of the proposed approach. Full article
(This article belongs to the Special Issue Distributed and Renewable Power Generation 2018)
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19 pages, 7962 KiB  
Article
Slip Control of a Squirrel Cage Induction Generator Driven by an Electromagnetic Frequency Regulator to Achieve the Maximum Power Point Tracking
by Thales Ramos, Manoel F. Medeiros Júnior, Ricardo Pinheiro and Arthur Medeiros
Energies 2019, 12(11), 2100; https://doi.org/10.3390/en12112100 - 1 Jun 2019
Cited by 12 | Viewed by 6160
Abstract
A new topology was recently developed to drive generators, aiming to avoid power electronic devices directly connected to the grid, and making possible the hybridization of the wind power with other sources. The system is composed by an induction machine with rotor in [...] Read more.
A new topology was recently developed to drive generators, aiming to avoid power electronic devices directly connected to the grid, and making possible the hybridization of the wind power with other sources. The system is composed by an induction machine with rotor in squirrel cage, and a rotating armature endowed with a three-phase winding that may be fed by a secondary source. The previous purpose was to convert a variable velocity imposed by the wind turbine to the armature in a constant velocity to be developed by the cage rotor, driving a shaft of synchronous generator. This article proposes the use of an induction generator instead of a synchronous one in order to explore the maximum available wind energy (MPPT). The simulation results show that the proposed topology is viable and supports both variations in wind speed and disturbances in power grid. Full article
(This article belongs to the Special Issue Distributed and Renewable Power Generation 2018)
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28 pages, 552 KiB  
Article
Economic Performance of Using Batteries in European Residential Microgrids under the Net-Metering Scheme
by Iolanda Saviuc, Herbert Peremans, Steven Van Passel and Kevin Milis
Energies 2019, 12(1), 165; https://doi.org/10.3390/en12010165 - 4 Jan 2019
Cited by 18 | Viewed by 4019
Abstract
Decentralized energy production offers an increased share of renewable energy and autonomy compared to the conventional, grid-only solution. However, under the net-metering scheme, the energy losses in batteries translate into financial losses to an investor seeking to move away from grid-only electricity and [...] Read more.
Decentralized energy production offers an increased share of renewable energy and autonomy compared to the conventional, grid-only solution. However, under the net-metering scheme, the energy losses in batteries translate into financial losses to an investor seeking to move away from grid-only electricity and set up a residential PV+Battery microgrid. Our paper examines a hypothetical support scheme for such a project, designed to balance the economic disadvantage through partially supporting the acquisition of batteries, and thus ensure that the microgrid solution is more attractive than no investment. For this we develop four case studies based on experiments carried out in Greece, Italy, Denmark and Finland. Using the minimization of the Net Present Cost for each project, we compare the PV+Battery solution to the grid-only scenario over 25 years, for a range of electricity prices. The results illustrate first how the success of this project depends on the price of electricity. Second, we find that under current conditions in the respective countries the need for battery support varies between zero in Denmark and 86% in Italy, which reflects how the disadvantages of net metering can only be counterbalanced by either very high electricity price or very high solar resource. Our paper contributes thus to the discussion about the favourable environment for batteries in residential microgrids. Full article
(This article belongs to the Special Issue Distributed and Renewable Power Generation 2018)
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