Journal
ENGINEERING
Volume 7, Issue 8, Pages 1057-1063Publisher
ELSEVIER
DOI: 10.1016/j.eng.2021.06.005
Keywords
Fast frequency control; Inertia emulation; Synchronous compensation; Low-inertia systems
Categories
Funding
- National Grid ESO
- SP Energy Networks via the PHOENIX project
- Demonstration of Virtual Synchronous Machine Control of a Battery System
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This paper discusses the impact of global decarbonization goals on power systems, with a focus on the challenges and potential solutions in the transmission system in Great Britain. The study specifically looks at the roles, advantages, and limitations of synchronous condensers, inertia emulation, and fast frequency response in frequency control.
The ambitious global targets on decarbonization present the need for massive integration of renewable generation in power systems, resulting in a significant decrease in the system inertia. In addition to the reduction in system inertia, the transmission system in Great Britain (GB) faces some unique chal-lenges owing to its relatively small capacity, while being decoupled from other transmission systems and with the renewable resources largely non-uniformly distributed across the system. This paper pre-sents opinions and insights on the challenges associated with frequency control in a low-inertia system and the potential solutions from a GB perspective. In this paper, we focus on three main techniques that act over different time scales: synchronous condensers, inertia emulation, and fast frequency response. We evaluate their relative advantages and limitations with learnings from recent research and develop-ment projects in GB, along with the opinions on their roles in addressing the frequency control challenges in future low-inertia systems. (c) 2021 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering and Higher Education Press Limited Company. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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