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Microgrid and Energy System Management
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Microgrid and Energy System Management

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 5121

Special Issue Editors

Dr. Tushar Kanti Roy

E-Mail Website
Guest Editor
Department of Electronics & Telecommunication Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh
Interests: robust control of hybrid AC/DC microgrids; applications of nonlinear control theories in power systems; dynamical modelling of modern power systems
Dr. Sajeeb Saha

E-Mail Website
Guest Editor
School of Science, Technology and Engineering, University of the Sunshine Coast, Queensland 4556, Australia
Interests: power system dynamic modelling; control; fault detection; microgrid control; cyber security of power grid
Special Issues, Collections and Topics in MDPI journals
Dr. Naruttam Kumar Roy

E-Mail Website
Guest Editor
Department of Electrical and Electronic Engineering, Khulna University of Engineering & Technology (KUET), Khulna 9203, Bangladesh
Interests: power system; renewable energy; smart grid; machine drives and control systems

Special Issue Information

Dear Colleagues,

Microgrids (MGs) are considered the best natural platform to host low-and medium-scale distributed generators (DG), modern loads driven by power electronics, and energy storage systems. In recent years, MGs have gained immense popularity and have been adopted to meet the energy demand of industries, institutions, and communities due to their several benefits, such as improved electric reliability, enhanced reliability, environmental friendliness, economic value, etc. MGs can operate in both standalone and grid-connected modes, depending on the requirements. When connected to the grid, MGs can support peak demand and fault restoration. While operating in islanded mode, MGs operate as small-scale power grids and meet energy demand partially or in full without any grid support. Maintaining stability and energy management is considered to be the main challenge in MG operations. Furthermore, mechanisms, configurations, control, operation, and protection, as well as standardisation, should be considered in the new development in order to make MG technology more compact, efficient, and simple to generalise for all energy applications. The purpose of this Special Issue is to report on the most recent advances and future trends in key techniques related to power management issues in microgrids. Among the topics of interest are the following:

  • Microgrid modelling and analysis for power management issues;
  • Approaches to microgrid control design in both islanded and grid-connected modes of operation;
  • Intelligent microgrid power management control;
  • Microgrid optimisation: efficiency, economic factors, and so on;
  • Multi-objective power management strategy of microgrids;
  • Power management issues in microgrid applications: emerging trends;
  • Problems with microgrid stability;
  • Centralised, decentralised, and distributed controllers for microgrids;
  • Power management enhancement in microgrids using hybrid energy storage systems.

Dr. Tushar Kanti Roy
Dr. Sajeeb Saha
Dr. Naruttam Kumar Roy
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. Sustainability 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 2400 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

  • microgrid
  • multi-objective control
  • modelling
  • power management
  • hybrid energy storage system
  • distributed generation

Published Papers (3 papers)

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Research

29 pages, 9075 KiB  
Article
Seamless Power Management for a Distributed DC Microgrid with Minimum Communication Links under Transmission Time Delays
by Dat Thanh Tran, Al Faris Habibullah and Kyeong-Hwa Kim
Sustainability 2022, 14(22), 14739; https://doi.org/10.3390/su142214739 - 9 Nov 2022
Cited by 3 | Viewed by 1488
Abstract
To maintain voltage stabilization under transmission time delays, this paper proposes a seamless power management scheme for a distributed DC microgrid (DCMG) with minimum digital communication links (DCLs). First, a DCL topology with minimum communication data is presented for the construction of distributed [...] Read more.
To maintain voltage stabilization under transmission time delays, this paper proposes a seamless power management scheme for a distributed DC microgrid (DCMG) with minimum digital communication links (DCLs). First, a DCL topology with minimum communication data is presented for the construction of distributed DCMG system not only to mitigate the communication burden but also to enhance the system’s flexibility and reliability. In addition, based on information gathered from nearby agents and local measurements, the operating modes of local agents in a DCMG system are determined properly to ensure a proper power balance under various conditions. During normal operation, the proposed scheme works as a distributed control scheme either in the grid-connected or islanded mode to take advantage of the distributed control method. To maintain seamless power management even under transmission time delays such as grid fault detection delays and grid recovery detection delays, the operating modes of each agent in a DCMG system are switched to a decentralized scheme based on the droop control method. When the utility grid information is properly identified by all power agents after a transmission time delay, the DCMG system returns to the distributed control scheme based on DC-link voltage (DCV) control to guarantee voltage stabilization. Furthermore, the scalability issue of a distributed DCMG system is also considered in this paper when an additional energy storage system (AESS) agent is involved in the DCMG system. For this purpose, a DCL topology with minimum communication data is designed for the AESS, which enables power units to participate in or to leave the distributed DCMG system easily. Simulation and experimental results under various conditions demonstrate the effectiveness and reliability of the proposed seamless power management strategy. Full article
(This article belongs to the Special Issue Microgrid and Energy System Management)
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15 pages, 3137 KiB  
Article
A Grid-Tied Inverter with Renewable Energy Source Integration in an Off-Grid System with a Functional Experimental Prototype
by Mantas Zelba, Tomas Deveikis, Justinas Barakauskas, Artūras Baronas, Saulius Gudžius, Audrius Jonaitis and Andreas Giannakis
Sustainability 2022, 14(20), 13110; https://doi.org/10.3390/su142013110 - 13 Oct 2022
Cited by 2 | Viewed by 1649
Abstract
Renewable energy implementation in residential-scale grid-connected systems is already popular, and the growth of such systems is increasing every year. Grid-connected solar systems are relatively simple to install and operate; in addition, such power plants are relatively inexpensive compared to other renewable sources [...] Read more.
Renewable energy implementation in residential-scale grid-connected systems is already popular, and the growth of such systems is increasing every year. Grid-connected solar systems are relatively simple to install and operate; in addition, such power plants are relatively inexpensive compared to other renewable sources and grid-connection options. However, most residential grid-connected system owners believe that they will become independent from a distribution system operator (DSO) once a renewable energy source (RES) becomes available. As a rule, after installation, without DSOs, grid-connected systems are typically shut down due to a faulty grid, despite RES availability; therefore, such RES grid-connected system owners at later phases aim to become at least partially independent of DSOs. After such a change, the importance of developing a grid-tied inverter connection to an off-grid system will increase. While developing such a system connection the main issue analyzed in this paper is to control the excess power without affecting the accumulated energy levels in a system. As a result, a solution for such a system structure is presented with its main advantage to control excess power without affecting the accumulated energy level. Full article
(This article belongs to the Special Issue Microgrid and Energy System Management)
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17 pages, 5242 KiB  
Article
Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties
by Sabrina Yeasmin, Tushar Kanti Roy and Subarto Kumar Ghosh
Sustainability 2022, 14(13), 7802; https://doi.org/10.3390/su14137802 - 27 Jun 2022
Cited by 7 | Viewed by 1479
Abstract
In this paper, an integral terminal sliding mode controller (ITSMC) based on a modified exponential reaching law (MERL) is developed for providing large-signal DC-bus voltage stability while smoothing power flow in DC microgrids (DCMGs). It is worth mentioning that this control approach is [...] Read more.
In this paper, an integral terminal sliding mode controller (ITSMC) based on a modified exponential reaching law (MERL) is developed for providing large-signal DC-bus voltage stability while smoothing power flow in DC microgrids (DCMGs). It is worth mentioning that this control approach is not employed in DCMG applications yet to adjust the DC-bus voltage while preserving power balance. The proposed DCMG is made up of a solar photovoltaic (PV) unit, a battery energy storage system (BESS), and DC loads. A DC-DC boost converter (DDBC) and a bidirectional DC-DC converter (BDDC) are employed to connect the solar PV and BESS, respectively, with the DC-bus, which not only controls the output power of these units but also regulates the DC-bus voltage. First, a detailed dynamical model including external disturbances is developed for each component, i.e., the solar PV and BESS. Then, the proposed control approach is employed on these units to get their corresponding control signals. Afterward, the overall stability of each unit is ensured using the Lyapunov stability theory. Moreover, to ensure the robustness of the proposed controller, external disturbances are also bounded based on the value of user-defined constants. Finally, simulation results are used to evaluate the effectiveness of the proposed control approach in a variety of operational scenarios. Additionally, simulation results of the proposed control strategy are compared to those of existing controllers to demonstrate its superiority. Full article
(This article belongs to the Special Issue Microgrid and Energy System Management)
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