Operation, Modeling, Control and Applications of Microgrids

A special issue of Electricity (ISSN 2673-4826).

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 1823

Special Issue Editor


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Guest Editor
Microgrid Lab Manager, Digital Energy Division, North America Operations, Schneider Electric, 800 Federal Street, Andover, MA 01810, USA
Interests: energy; power distribution; electromagnetic and photonics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Smart and intelligent grids are a solution to the problem of implementing distributed energy resources (DERs) into the existing power infrastructure. However, implementing smart grids into an interconnected power system is challenging. To address this challenge, microgrids (MGs) with intelligent monitoring and control can modularize the power grid and act as building blocks for smart grids. Sensors, switches, energy storage devices, generators, protection equipment, control systems, linear and nonlinear loads, smart metering, etc., are some key functional components of an MG which need to be integrated in such a way that will make the MG functional, resilient and sustainable. With internet connectivity, automation and distributed control, energy flow in MGs can be managed remotely and intelligently. As part of the ongoing research, customized architectures can be proposed to demonstrate a relative comparison between different MG architectures in terms of improvements in their key performance indicators (KPIs). Artificial intelligent-based software algorithms are in development to forecast future demand and generation in particular locations. Integrating this advisory software into MG operations can also be an interesting research avenue.

This Special Issue aims to collect original research or review articles on different types of MG architecture modeling, operations, control and applications. Both fundamental and applied research will be considered. The research work on the resiliency of energy flow and cloud computing-based economic generation forecasting of MG operations will receive special attention.

Dr. Kaisar R. Khan
Guest Editor

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Keywords

  • AC/DC microgrids
  • distributed energy resources
  • renewable energy sources
  • grid-connected, isolated and hybrid microgrids

Published Papers (1 paper)

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Research

19 pages, 19013 KiB  
Article
Simple Chargers for a Small DC Micro-Grid for a Home Emergency Power System
by Felix A. Himmelstoss and Helmut L. Votzi
Electricity 2023, 4(3), 216-234; https://doi.org/10.3390/electricity4030013 - 26 Jun 2023
Viewed by 1437
Abstract
Recently, the danger of a long blackout is discussed in Europe. Blackouts can be caused by failures in the energy distribution, errors in large power plants or even cyber-attacks. This can lead to a chain reaction and a disintegration of the mains. Longer [...] Read more.
Recently, the danger of a long blackout is discussed in Europe. Blackouts can be caused by failures in the energy distribution, errors in large power plants or even cyber-attacks. This can lead to a chain reaction and a disintegration of the mains. Longer blackouts have an extreme impact on the economy as a whole and on local households. Therefore, a small local grid at home which can supply the most important loads over some time has garnered increasing interest. With a small direct current (DC) grid, critical loads such as for deep freezers and refrigerators can be supplied, and some LED lights can be used in the evening or at night. Solar generators (panels) can be used to charge energy storage devices, e.g., batteries. A DC grid can not only be used in the case of an emergency, but can also be used to reduce energy consumption out of the public mains and reduce energy bills. The architecture of the household emergency DC grid is discussed; suggestions for batteries are given; two simple chargers, based on DC-DC-converters like the Buck (step-down) and on the Boost (step-up) converters, are shown; dimensioning suggestions are given; and simple, robust controllers, a P-controller with disturbance feedforward and a hysteresis controller, are treated and tested via simulations. The goal of the paper is to show a simple autonomous home energy system without an external fieldbus, LAN or internet connection with special focus on simple charger topologies. Full article
(This article belongs to the Special Issue Operation, Modeling, Control and Applications of Microgrids)
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