Grid frequency support from inverter connected generation

Paper


Mlilo, Njabulo, Ahfock, Tony and Brown, Jason. 2021. "Grid frequency support from inverter connected generation." 31st Australasian Universities Power Engineering Conference (AUPEC 2021). Perth, Australia 26 - 30 Sep 2021 United States. https://doi.org/10.1109/AUPEC52110.2021.9597782
Paper/Presentation Title

Grid frequency support from inverter connected generation

Presentation TypePaper
AuthorsMlilo, Njabulo (Author), Ahfock, Tony (Author) and Brown, Jason (Author)
Journal or Proceedings TitleProceedings of the 31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Number of Pages5
Year2021
Place of PublicationUnited States
ISBN9781665434515
Digital Object Identifier (DOI)https://doi.org/10.1109/AUPEC52110.2021.9597782
Web Address (URL) of Paperhttps://ieeexplore.ieee.org/document/9597782
Web Address (URL) of Conference Proceedingshttps://ieeexplore.ieee.org/xpl/conhome/9597674/proceeding
Conference/Event31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Event Details
31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Event Date
26 to end of 30 Sep 2021
Event Location
Perth, Australia
Abstract

This paper presents a case study to demonstrate impact of current fleet of inverter connected generation (roof top photovoltaics and utility scale grid following inverters) that have been allowed to connect to power networks with no obligations to respond to system under frequency events. In this study, a grid forming inverter with droop control and grid following inverter connected to a modified IEEE nine-bus test system have been used to show system impact when inverters do not provide system support, and benefits when such inverters provide system support for under frequency events. The case studies performed show that there is potential for inverter connected generation to support transmission grid frequency subject to renewable resource availability or when backed up by energy storage facilities. There is need for grid codes to be reviewed further to put more obligation on intermittent inverter connected generation to provide more grid frequency support functionality, particularly for under frequency events which are the most common in power systems in comparison to over frequency events.

KeywordsFrequency control, ancillary services, grid forming inverters, grid following inverters
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400803. Electrical energy generation (incl. renewables, excl. photovoltaics)
400805. Electrical energy transmission, networks and systems
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsSchool of Mechanical and Electrical Engineering
Institution of OriginUniversity of Southern Queensland
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https://research.usq.edu.au/item/q6z82/grid-frequency-support-from-inverter-connected-generation

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Ahfock, Tony, Buttsworth, David, Phythian, Mark and Maxwell, Andrew. 2008. "Infrastructure for remotely accessible laboratories at the University of Southern Queensland." Mann, Llewellyn, Thompson, Adam and Howard, Prue (ed.) 19th Annual Conference of the Australasian Association for Engineering Education (AAEE 2008). Yeppoon, Australia 07 - 10 Dec 2008 Canberra, Australia.
Multiple subscription subscriber identity module (SIM) card
Brown, Jason. 2009. Multiple subscription subscriber identity module (SIM) card. US7613480B2
Internationalisation of Technology and Society course at University of Southern Queensland
Thorpe, David and Ahfock, Tony. 2005. "Internationalisation of Technology and Society course at University of Southern Queensland." Radcliffe, David and Humphries, Josh (ed.) 4th ASEE/AaeE Global Colloquium on Engineering Education. Sydney, Australia 26 - 29 Sep 2005 Brisbane, Australia.
DC magnetisation of transformers
Ahfock, A. and Hewitt, A. J.. 2006. "DC magnetisation of transformers." IET Electric Power Applications. 153 (4), pp. 601-607.
DC offset elimination in a single-phase grid-connected photovoltaic system
Ahfock, Tony L. and Bowtell, Leslie. 2006. "DC offset elimination in a single-phase grid-connected photovoltaic system." AUPEC 2006: 16th Australasian Universities Power Engineering Conference. Melbourne, Australia 10 - 13 Dec 2006 Melbourne, Australia.
Curvature-related eddy-current losses in laminated axial flux machine cores
Ahfock, Tony L. and Hewitt, Andrew. 2005. "Curvature-related eddy-current losses in laminated axial flux machine cores." IET Electric Power Applications. 152 (5), pp. 1350-1358. https://doi.org/10.1049/ip-erp:20045280
Modeling of the solid rotor induction motor
Ahfock, Tony L. and Hewitt, Andrew. 2005. "Modeling of the solid rotor induction motor." Negnevitsky, Michael (ed.) AUPEC 2005: 15th Australasian Universities Power Engineering Conference. Hobart, Australia 25 - 28 Sep 2005 Hobart, Australia.
A pulsed LED system for schlieren flow visualisation
Buttsworth, David R. and Ahfock, Tony L.. 2003. A pulsed LED system for schlieren flow visualisation. Toowoomba, Australia. University of Southern Queensland.