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Special Issue Editor

Dr. Mohamed Mosaad

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Guest Editor

Department of Electrical and Electronic Engineering Technology, Yanbu Industrial College, Yanbu 46452, Saudi Arabia
Interests: power system stability; control; optimization; renewable energy

Special Issue Information

Dear Colleagues,

A new global energy economy is being created as a result of the faster-than-ever worldwide expansion of renewable energy production. This expansion is accomplished by incorporating some renewable energy sources into the electrical grid. The electrical systems become more sophisticated as a result of the integration and present new difficulties. One of these difficulties, as in PV and wind systems, is the unpredictable nature of the energy produced by these renewable sources as well as their dependency on environmental changes. The integration process will also require power electronic switches. Consequently, to improve and support the performance of these grid-integrated renewable sources, contemporary control, flexible devices, and optimization methodologies should be introduced. The following are only a few examples of the subjects of interest:

Modern power system operation and control;
Distributed generation;
Modern FACTS device control techniques in contemporary power systems;
Modern optimization techniques for improving the integration of renewable energy sources into the grid;
Security and resiliency of hybrid power systems.

Dr. Mohamed Mosaad
Guest Editor

Manuscript Submission Information

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Keywords

power systems
distributed generation
renewable energy
FACTS
adaptive control

Published Papers (2 papers)

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Research

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27 pages, 2809 KiB

Open AccessArticle

Optimal Allocation and Size of Renewable Energy Sources as Distributed Generations Using Shark Optimization Algorithm in Radial Distribution Systems

by Ehab S. Ali, Sahar. M. Abd Elazim, Sultan H. Hakmi and Mohamed I. Mosaad

Energies 2023, 16(10), 3983; https://doi.org/10.3390/en16103983 - 9 May 2023

Cited by 11 | Viewed by 2152

Abstract

The need for energy has significantly increased in the world in recent years. Various research works were presented to develop Renewable Energy Sources (RESs) as green energy Distributed Generations (DGs) to satisfy this demand. In addition, alleviating environmental problems caused by utilizing conventional power plants is diminished by these renewable sources. The optimal location and size of the DG-RESs significantly affect the performance of Radial Distribution Systems (RDSs) through the fine bus voltage profile, senior power quality, low power losses, and high efficiency. This paper investigates the use of PV (photovoltaic) and (Wind Turbine) WT systems as a DG source in RDSs. This investigation is presented via the optimal location and size of the PV and WT systems, which are the most used DG sources. This optimization problem aims to maximize system efficiency by minimizing power losses and improving both voltage profile and power quality using White Shark Optimization (WSO). This algorithm emulates the attitude of great white sharks when foraging using their senses of hearing and smell. It confirms the balance between exploration and exploitation to discover optimization that is considered as the main advantage of this approach in attaining the global minimum. To assess the suggested approach, three common RDSs are utilized, namely, IEEE 33, 69, and 85 node systems. The results prove that the applied WSO approach can find the best location and size of the RESs to reduce power loss, ameliorate the voltage profile, and outlast other recent strategies. Adding more units provides a high percentage of reducing losses by at least 93.52% in case of WTs, rather than 52.267% in the case of PVs. Additionally, the annual saving increased to USD 74,371.97, USD 82,127.257, and USD 86,731.16 with PV penetration, while it reached USD 104,872.96, USD 116,136.57, and USD 155,184.893 with WT penetration for the 33, 69, and 85 nodes, respectively. In addition, a considerable enhancement in the voltage profiles with the growth of PV and WT units was confirmed. The ability of the suggested WSO for feasible implementation was validated and inspected by preserving the restrictions and working constraints. Full article

(This article belongs to the Special Issue Advanced Technologies in Renewable Energy Generation Systems)

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Review

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28 pages, 8435 KiB

Open AccessReview

Single-Phase Microgrid Power Quality Enhancement Strategies: A Comprehensive Review

by Hussain A. Alhaiz, Ahmed S. Alsafran and Ali H. Almarhoon

Energies 2023, 16(14), 5576; https://doi.org/10.3390/en16145576 - 24 Jul 2023

Cited by 1 | Viewed by 1730

Abstract

Renewable distributed generators (RDGs) have made inroads in recent power systems owing to the environmental effect of traditional generators and their high consumption of electric energy. The widespread use of RDGs has been a recent trend in numerous nations. The integration complexity and the intermittent nature of RDGs can undermine the security and stability of microgrids (µGs). In order to guarantee the effectiveness, dependability, and quality of the electricity delivered, appropriate control methods are necessary. RDGs are being included in single-phase microgrids (1Ø-µGs) to generate energy closer to the user. The creation of low-voltage µGs allows for increased energy efficiency and improved electrical supply dependability. Nevertheless, the combined power pumped by DGs might create power quality (PQ) difficulties, especially during off-grid operations. The three biggest problems with PQ are reactive-power swapping, voltage and frequency (VαF) variations, and current and voltage (IαV) harmonic falsification associated with 1Ø-µGs; these conditions may affect the operation of µGs. The designed and implemented (primary–secondary control systems) in RDGs are the prevalent strategy discussed in the literature for mitigating these PQ difficulties. Furthermore, emerging grid innovations like the electrical spring offer viable alternatives that might reduce some problems through decentralized operation. Although several research studies have addressed PQ concerns in 3Ø-µGs, not all of these solutions are immediately applicable to their 1Ø equivalents. In this paper, the state of the art and a performance comparison of several PQ enhancement strategies of µGs is discussed. Additionally, the primary difficulties and several PQ approach tactics are highlighted. All vital features from high-quality published articles and new dimensions in this field are presented for mitigating PQ difficulties in 1Ø-µGs. Full article

(This article belongs to the Special Issue Advanced Technologies in Renewable Energy Generation Systems)

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