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Monitoring and Control of Active Electrical Distribution Grids and Urban Energy Grids: Volume II

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 4400

Special Issue Editor


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Guest Editor
Institute for Automation of Complex Power Systems, RWTH Aachen University, 52064 Aachen, Germany
Interests: electrical power engineering; distributed generation; measurement, monitoring, and automation of electrical distribution systems; distributed control for power systems, monitoring, and control of active electrical distribution grids and urban energy grids; power hardware-in-the-loop platform for the testing of monitoring systems; multiagent control system
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Special Issue Information

Dear Colleagues,

We are glad to share the great success of our Special Issue “Monitoring and Control of Active Electrical Distribution Grids and Urban Energy Grids”.

We are now launching a second volume of this Special Issue, “Monitoring and Distributed Control for Power Systems: Volume II”.

Many of the changes in the electrical power system are occurring on the distribution level and in the urban setting. The network infrastructure is changing due to microgrid integration, including DC grids and scenarios in which parts of the distribution system are managed like microgrids; sector coupling of, for example, electricity and gas; new load behavior (e.g., e-vehicle recharging stations and buildings); and renewable energy sources and storage. Business level changes accompany the power infrastructure changes, among them the new roles of distribution system operators, aggregators, third party service providers, and local energy exchange systems.

These active distribution grids require management and control solutions to handle the complexity and to adapt to dynamically changing operating conditions, including extreme conditions such as reconfiguration and black start.

Technical and business activities rely on the access to measurements and other data, and the visibility of the network and device status. This implies that measurements, in different forms and from a variety of sources, sensors, and instruments, must be pervasive; able to track fast dynamics; able to provide new relevant parameters; and accompanied by elaboration, interpretation, and merging functionalities. New concepts of the monitoring of the electrical distribution grids and of the systems they interface must be developed.

Monitoring and control functions must be supported in a suitable automation system.

The technologies for data collection, communication, storage, access, and handling are expected to create an open and secure environment. The applications should be easy to develop, and should support interoperability across sectors, companies, institutions, and users, with particular attention to standards. In particular, technologies and applications in the energy sector should constitute one face of the smart city environment, thus yielding benefits on a broader scale to the urban setting.

This Special Issue will present the concepts, technologies, methods, and applications that promise to propel the active electrical distribution systems in the urban environment to the next level. Contributions that present the results of full-scale field demonstrations or scalable testing methods are particularly relevant.

Prof. Dr. Ferdinanda Ponci
Guest Editor

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Keywords

  • distribution grids
  • monitoring
  • measurements
  • control
  • energy management
  • microgrids
  • data platforms
  • sector coupling
  • smart city
  • local energy systems
  • storage
  • integration of renewables
  • urban systems

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Published Papers (2 papers)

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17 pages, 6188 KiB  
Article
SST-Based Grid Reinforcement for Electromobility Integration in Distribution Grids
by Charukeshi Joglekar, Benedict Mortimer, Ferdinanda Ponci, Antonello Monti and Rik W. De Doncker
Energies 2022, 15(9), 3202; https://doi.org/10.3390/en15093202 - 27 Apr 2022
Cited by 4 | Viewed by 2119
Abstract
Electric Vehicles (EVs) are gaining acceptance due to the advantages they offer in the reduction of nitrogen oxide and carbon dioxide emissions. The need for emission reduction and the potential of EVs for these reductions is reflected in the current sustainable mobility policies [...] Read more.
Electric Vehicles (EVs) are gaining acceptance due to the advantages they offer in the reduction of nitrogen oxide and carbon dioxide emissions. The need for emission reduction and the potential of EVs for these reductions is reflected in the current sustainable mobility policies of the EU as well as the German government. Increasing the penetration of EVs in the grid requires an expansion of EV charging infrastructure, which in turn requires either grid reinforcement or solutions for more efficient use of existing infrastructure to avoid or postpone grid reinforcement. Distribution transformers face increased loading due to EV charging and need to be protected from overloading during peak load periods to ensure continuity of service. Therefore, transformers are one of the components that are upgraded or replaced as a part of grid reinforcement. In this paper, we propose the connection of a Solid-State Transformers (SST) between two buses operating at the same-voltage level as an alternative to replacement or upgrading of conventional transformer as well as to prevent their overloading. We analyse how the proposed topology can be useful to reduce the impact of EV integration on the overloading of distribution transformers and node voltage violations in the distribution grid. Full article
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18 pages, 19180 KiB  
Article
Miniaturized Distributed Generation for a Micro Smart Grid Simulator
by Yun-Seok Ko, Su-Hwan Kim and Gyoung-Hwan Lim
Energies 2022, 15(4), 1511; https://doi.org/10.3390/en15041511 - 17 Feb 2022
Viewed by 1567
Abstract
In this paper, a miniaturization method is proposed for developing micro distributed generation for a micro smart grid simulator. The micro smart grid simulator is a fault simulator that was built to test and verify the new operation control algorithms for smart grids [...] Read more.
In this paper, a miniaturization method is proposed for developing micro distributed generation for a micro smart grid simulator. The micro smart grid simulator is a fault simulator that was built to test and verify the new operation control algorithms for smart grids in the laboratory and has a size downscaled to one-thousandth of that of an actual smart grid. The micro distributed generation was designed in a multi-layered structure (dimension: 13 × 20 cm2), in which each function is implemented in several layers, to satisfy the size requirements. Next, the grid synchronization and PQ control algorithms required for the distributed generation were developed. A three-phase 19 V power system was built, and a 19 V–7.5 W three-phase micro distributed generation was realized through experimental verification. In addition, by verifying the effectiveness through grid synchronization and 7.5 W PQ control experiments, it was confirmed that the micro distributed generation based on the proposed miniaturization method can be implemented in a micro smart grid simulator. Full article
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