Freezing Grid-Forming Converter Virtual Angular Speed to Enhance Transient Stability Under Current Reference Limiting
Files in This Item:
|Download||Freezing Grid-Forming Converter Virtual Angular Speed to Enhance Transient Stability Under Current Reference Limiting.pdf||1.15 MB||Adobe PDF|
|Title:||Freezing Grid-Forming Converter Virtual Angular Speed to Enhance Transient Stability Under Current Reference Limiting||Authors:||Zhao, Xianxian; Flynn, Damian||Permanent link:||http://hdl.handle.net/10197/13086||Date:||12-Nov-2020||Online since:||2022-08-22T10:57:46Z||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||Publisher:||IEEE||Copyright (published version):||2020 IEEE||Keywords:||Grid-forming converter; Current limiting; Transient stability; Anti-windup integration; Fault analysis||DOI:||10.1109/compel49091.2020.9265733||Other versions:||https://compel2020.org||Language:||en||Status of Item:||Peer reviewed||Is part of:||2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL)||Conference Details:||The 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), Aalborg, Denmark, 9-12 November 2020||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
If you are a publisher or author and have copyright concerns for any item, please email firstname.lastname@example.org and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.