Transient stability analysis and enhancement of grid-forming inverters under different current prioritization limitation techniques

Files in This Item:
 File SizeFormat
DownloadFreezing Grid-Forming Converter Virtual Angular Speed to Enhance.pdf1.17 MBAdobe PDF
Title: Transient stability analysis and enhancement of grid-forming inverters under different current prioritization limitation techniques
Authors: Zhao, XianxianFlynn, Damian
Permanent link: http://hdl.handle.net/10197/13084
Date: 12-Nov-2020
Online since: 2022-08-22T10:51:27Z
Abstract: Grid-forming voltage source converters have been envisioned to play a major role in future power systems, but they have limited overcurrent capability. Therefore, it is important to investigate their ability to ride through faults and maintain system stability under strict overcurrent limits. Different current priority limiting controls based on conditional anti-windup integration are formulated, and transient stability is analyzed using voltage phasor diagrams. Subsequently, a practical solution is proposed which enhances transient stability, by freezing the virtual angular speed to the pre-fault value during faults, once current saturation occurs. Additionally, temporarily freezing the post-fault angular speed to a value slightly less than pre-fault value ensures recovery from the saturated current state. Simulation results, based on a modified IEEE 39-bus system validate the efficacy of the proposed solution.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Keywords: Grid-forming converterCurrent limitingTransient stabilityAnti-windup integrationFault analysis
Other versions: https://compel2020.org
Language: en
Status of Item: Peer reviewed
Conference Details: The Twenty-first IEEE Workshop on Control and Modeling for Power ElectronicsAalborg (IEEE COMPEL 2020), Aalborg, Denmark, 9-12 November 2020
ISSN: 1093-5142
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Electrical and Electronic Engineering Research Collection

Show full item record

Page view(s)

261
Last Week
11
Last month
checked on Sep 26, 2022

Download(s)

5
checked on Sep 26, 2022

Google ScholarTM

Check


If you are a publisher or author and have copyright concerns for any item, please email research.repository@ucd.ie and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.