An AC OPF with voltage – frequency coupling constraints for addressing operational challenges of AC/DC microgrids

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Title: An AC OPF with voltage – frequency coupling constraints for addressing operational challenges of AC/DC microgrids
Authors: Oulis Rousis, A
Konstantelos, I
Fatouros, P
Strbac, G
Item Type: Conference Paper
Abstract: This paper focuses on developing an appropriate optimization technique for solving the optimal operation problem of hybrid AC/DC microgrids. A non-linear mathematical formulation is deployed to solve the problem subject to the exhaustive set of constraints and equations pertaining to the operation of AC and DC networks. The proposed approach, being able to capture technical characteristics, such as voltage and frequency, through the detailed power flow algorithm, provides accurate solutions and therefore can address operational challenges of MGs. The approach is applied to a highly-generalizable microgrid comprising of AC and DC generators and loads, as well as storage technologies in order to demonstrate the benefits. The simulation results demonstrate how voltage and frequency are effectively captured across the whole network via the utilised formulation and the power flow through the interlinking converter is associated with frequency (i.e. 49-51 Hz) and voltage variation (i.e. 0.95-1.05 p.u.).
Issue Date: 1-Feb-2019
Date of Acceptance: 1-Jan-2019
ISSN: 1876-6102
Publisher: Elsevier
Start Page: 261
End Page: 266
Journal / Book Title: Energy Procedia
Volume: 159
Copyright Statement: © 2019 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND license (
Conference Name: REM2018: Renewable Energy Integration with Mini/Microgrid
Publication Status: Published
Start Date: 2018-09-28
Conference Place: Rhodes, Greece
Online Publication Date: 2019-03-15
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering
Centre for Environmental Policy
Faculty of Natural Sciences

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