A master thesis from Aalborg University
Investigation of applying grid-forming converter control on wind turbines and its influence on power systems
Author(s)
Term
4. term
Education
Publication year
2020
Submitted on
2020-05-28
Pages
72 pages
Abstract
The instantaneous penetration level of RES is expected to increase in the future. This is expected to raise new power system stability challenges, as conventional SGs will be replaced with converter based power sources. The grid-forming converter (GFC) control concept is anticipated to possess the required capabilities to overcome the expected power system challenges. This project investigates the characteristics of GFCs, together with the considerations of applying GFC control to WTGs. A dynamic RMS model is developed in DIgSILENT PowerFactory to represent an aggregated wind farm with GFC control. The developed GF model is utilised to investigate power system support offered by a wind farm operating in GF mode. The GF model was compared to a conventional SG and an aggregated wind farm model. It was found that the GF model could offer similar system support compared to an SG. However, converter based grid-forming units have unlike SGs a strict operation boundary owing to hardware limitations. Moreover, it was found that the GF model could outperform SGs in some areas, as a converter based grid-forming units have more extensive parameter design freedom compared to conventional SGs.
Keywords
GFC ; Grid-forming ; WTG ; PowerFactory
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.