Firming up renewable generation for frequency control and load following ancillary services participation
Article
Article Title | Firming up renewable generation for frequency control and load following ancillary services participation |
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ERA Journal ID | 210416 |
Article Category | Article |
Authors | Mlilo, Njabulo, Brown, Jason and Ahfock, Tony |
Journal Title | Energy Systems |
Number of Pages | 39 |
Year | 2024 |
Publisher | Springer |
Place of Publication | Germany |
ISSN | 1868-3967 |
1868-3975 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s12667-024-00705-4 |
Web Address (URL) | https://link.springer.com/article/10.1007/s12667-024-00705-4 |
Abstract | Power system grids worldwide are experiencing increased levels of voluntary and involuntary curtailment in response to system operator directions to manage power system security and market price signals when power generated outstrips available network demand. The curtailed renewable energy that cannot be captured by available energy storage capacity in the power system can be used to provide grid frequency control ancillary services. A novel primary frequency response control strategy to enhance the capability of intermittent renewable energy generators to provide a firm spinning reserve service is proposed in this paper. The proposed control strategy integrates de-loading control techniques of intermittent renewable energy generation with coordinated energy storage dispatch in a single scheme to provide a firm primary active power response to frequency excursions. A test system developed in MATLAB Simscape environment to demonstrate the efficacy of the proposed control strategy is presented in detail. Simulation results show that curtailed intermittent renewable generation can be used as fast response virtual energy storage that can be reliably harnessed for frequency ancillary services when firmed by energy storage. The performance and efficacy of the proposed controller is tested under three different operating test scenarios of various solar irradiation levels and different magnitudes of frequency excursion disturbance events. Simulation results show that the control strategy is able to prioritise the intermittent energy generator responses, ahead of the firming energy storage facility, to provide a predictable primary frequency response under varying levels of solar irradiation. A techno-economic assessment of the proposed system configuration and control strategy has been presented and shows that the system is economically viable. |
Keywords | renewable power generation; ancillary services; energy storage |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400804. Electrical energy storage |
400805. Electrical energy transmission, networks and systems | |
400808. Photovoltaic power systems | |
Public Notes | The accessible file is the accepted version of the paper. Please refer to the URL for the published version. |
Byline Affiliations | School of Engineering |
https://research.usq.edu.au/item/zv1x1/firming-up-renewable-generation-for-frequency-control-and-load-following-ancillary-services-participation
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