scholarly journals Special Issue on Advances and Technologies in High Voltage Power Systems Operation, Control, Protection, and Security

2020 ◽  
Vol 11 (1) ◽  
pp. 274
Author(s):  
Hassan Haes Alhelou ◽  
Pierluigi Siano
Keyword(s):  
Power Systems ◽  
High Voltage ◽  
Human Activities ◽  
Energy Requirements ◽  
Special Issue ◽  
Modern Life ◽  
The World ◽  
Operation Control ◽  
Power Systems Operation

The electrical demands in several countries around the world are increasing due to the huge energy requirements of prosperous economies and the human activities of modern life [...]

scholarly journals Integration of High Voltage AC/DC Grids into Modern Power Systems

2020 ◽  
Vol 10 (11) ◽  
pp. 3682
Author(s):  
Fazel Mohammadi
Keyword(s):  
Power Systems ◽  
High Voltage ◽  
Operation Planning ◽  
Special Issue ◽  
Planning And Scheduling

The Special Issue on “Integration of High Voltage AC/DC Grids into Modern Power Systems” is published. A total of five qualified papers are published in this Special Issue. The topics of the papers are control, protection, operation, planning, and scheduling of high voltage AC/DC grids. Twenty-five researchers have participated in this Special Issue. We hope that this Special Issue is helpful for high voltage applications.

scholarly journals Voltage Stability of Power Systems with Renewable-Energy Inverter-Based Generators: A Review

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 115
Author(s):  
Nasser Hosseinzadeh ◽  
Asma Aziz ◽  
Apel Mahmud ◽  
Ameen Gargoom ◽  
Mahbub Rabbani
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Voltage Stability ◽  
Reactive Power ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
System Stability ◽  
Special Issue ◽  
Synchronous Generators

The main purpose of developing microgrids (MGs) is to facilitate the integration of renewable energy sources (RESs) into the power grid. RESs are normally connected to the grid via power electronic inverters. As various types of RESs are increasingly being connected to the electrical power grid, power systems of the near future will have more inverter-based generators (IBGs) instead of synchronous machines. Since IBGs have significant differences in their characteristics compared to synchronous generators (SGs), particularly concerning their inertia and capability to provide reactive power, their impacts on the system dynamics are different compared to SGs. In particular, system stability analysis will require new approaches. As such, research is currently being conducted on the stability of power systems with the inclusion of IBGs. This review article is intended to be a preface to the Special Issue on Voltage Stability of Microgrids in Power Systems. It presents a comprehensive review of the literature on voltage stability of power systems with a relatively high percentage of IBGs in the generation mix of the system. As the research is developing rapidly in this field, it is understood that by the time that this article is published, and further in the future, there will be many more new developments in this area. Certainly, other articles in this special issue will highlight some other important aspects of the voltage stability of microgrids.

Identifying weaknesses in AC shipboard power systems operation during motor starts and reacceleration

2021 ◽  
Vol 197 ◽  
pp. 107328
Author(s):  
Vassilis C. Nikolaidis ◽  
Kostantinos Z. Ioannidis ◽  
John M. Prousalidis
Keyword(s):  
Power Systems ◽  
Shipboard Power Systems ◽  
Shipboard Power ◽  
Power Systems Operation

scholarly journals Editorial for Special Issue “Monitoring Land Subsidence Using Remote Sensing”

2021 ◽  
Vol 13 (9) ◽  
pp. 1771
Author(s):  
Massimo Fabris ◽  
Nicola Cenni ◽  
Simone Fiaschi
Keyword(s):  
Remote Sensing ◽  
Land Subsidence ◽  
Geological Hazard ◽  
Special Issue ◽  
The World

Land subsidence is a geological hazard that affects several different communities around the world [...]

scholarly journals Fluvial Geomorphology and River Management

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1608
Author(s):  
Salvatore Ivo Giano
Keyword(s):  
Human Activities ◽  
River Restoration ◽  
Fluvial Geomorphology ◽  
Landscape Evolution ◽  
River Management ◽  
Special Issue ◽  
Fluvial Systems ◽  
The Impact

This Special Issue deals with the role of fluvial geomorphology in landscape evolution and the impact of human activities on fluvial systems, which require river restoration and management [...]

scholarly journals Laws and Emerging Technologies

Laws ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 46
Author(s):  
Esther Salmerón-Manzano
Keyword(s):  
Information Technologies ◽  
New Technologies ◽  
Legal Issues ◽  
The Other ◽  
Special Issue ◽  
Legal Challenges ◽  
The World ◽  
Huge Impact ◽  
New Challenges ◽  
The Way

New technologies and so-called communication and information technologies are transforming our society, the way in which we relate to each other, and the way we understand the world. By a wider extension, they are also influencing the world of law. That is why technologies will have a huge impact on society in the coming years and will bring new challenges and legal challenges to the legal sector worldwide. On the other hand, the new communications era also brings many new legal issues such as those derived from e-commerce and payment services, intellectual property, or the problems derived from the use of new technologies by young people. This will undoubtedly affect the development, evolution, and understanding of law. This Special Issue has become this window into the new challenges of law in relation to new technologies.

scholarly journals Special Issue “Levering Sustainable Food Systems to Address Climate Change (Pandemics and Other Shocks and Hazards): Possible Transformations”

2021 ◽  
Vol 13 (15) ◽  
pp. 8206
Author(s):  
Andrew Spring ◽  
Erin Nelson ◽  
Irena Knezevic ◽  
Patricia Ballamingie ◽  
Alison Blay-Palmer
Keyword(s):  
Climate Change ◽  
Food Systems ◽  
Special Issue ◽  
Sustainable Food Systems ◽  
Sustainable Food ◽  
Address Climate Change ◽  
The World

Since we first conceived of this Special Issue, “Levering Sustainable Food Systems to Address Climate Change—Possible Transformations”, COVID-19 has turned the world upside down [...]

scholarly journals A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 909
Author(s):  
David W. Upton ◽  
Keyur K. Mistry ◽  
Peter J. Mather ◽  
Zaharias D. Zaharis ◽  
Robert C. Atkinson ◽  
...  
Keyword(s):  
Power Systems ◽  
High Voltage ◽  
Partial Discharge ◽  
Specific Area ◽  
Electrical Insulation ◽  
Acoustic Detection ◽  
Advantages And Disadvantages ◽  
Initial Stage ◽  
Catastrophic Failures ◽  
Radiometric Detection

The lifespan assessment and maintenance planning of high-voltage power systems requires condition monitoring of all the operational equipment in a specific area. Electrical insulation of electrical apparatuses is prone to failure due to high electrical stresses, and thus it is a critical aspect that needs to be monitored. The ageing process of the electrical insulation in high voltage equipment may accelerate due to the occurrence of partial discharge (PD) that may in turn lead to catastrophic failures if the related defects are left untreated at an initial stage. Therefore, there is a requirement to monitor the PD levels so that an unexpected breakdown of high-voltage equipment is avoided. There are several ways of detecting PD, such as acoustic detection, optical detection, chemical detection, and radiometric detection. This paper focuses on reviewing techniques based on radiometric detection of PD, and more specifically, using received signal strength (RSS) for the localization of faults. This paper explores the advantages and disadvantages of radiometric techniques and presents an overview of a radiometric PD detection technique that uses a transistor reset integrator (TRI)-based wireless sensor network (WSN).

scholarly journals Contemporary Teacher Education: A Global Perspective-Introduction to a Special Collection of Research

2021 ◽  
Vol 11 (7) ◽  
pp. 340
Author(s):  
Kirsi Tirri
Keyword(s):  
Teacher Education ◽  
Global Perspective ◽  
Special Issue ◽  
The World ◽  
Special Collection

This special issue on “Contemporary Teacher Education: A Global Perspective” contains eleven articles focused on varied current topics in teacher education all over the world [...]

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