Assessment of High-Electrification UK Scenarios with Varying Levels of Nuclear Power and Associated Post-Fault Behaviour

Mohamed Hadri, Vincenzo Trovato, Agnes Bialecki, Bruno Merk and Aiden Peakman
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Mohamed Hadri: EDF Energy R&D, Croydon, London CR0 2AJ, UK
Vincenzo Trovato: Electrical and Electronic Engineering, South Kensington Campus, Imperial College London, London SW7 2AZ, UK
Agnes Bialecki: EDF Energy R&D, Croydon, London CR0 2AJ, UK
Bruno Merk: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
Aiden Peakman: School of Engineering, University of Liverpool, Liverpool L69 3GH, UK

Energies, 2021, vol. 14, issue 6, 1-23

Abstract: Renewable integration into the electricity system of Great Britain (GB) is causing considerable demand for additional flexibility from plants. In particular, a considerable share of this flexibility may be dispatched to secure post-fault transient frequency dynamics. Pursuant to the unprecedented changes to the traditional portfolio of generation sources, this work presents a detailed analysis of the potential system-level value of unlocking flexibility from nuclear electricity production. A rigorous enhanced mixed integer linear programming (MILP) unit commitment formulation is adopted to simulate several generation-demand scenarios where different layers of flexibility are associated to the operation of nuclear power plants. Moreover, the proposed optimisation model is able to assess the benefit of the large contribution to the system inertial response provided by nuclear power plants. This is made possible by considering a set of linearised inertia-dependent and multi-speed constraints on post fault frequency dynamics. Several case studies are introduced considering 2050 GB low-carbon scenarios. The value of operating the nuclear fleet under more flexible paradigms is assessed, including environmental considerations quantified in terms of system-level CO 2 emissions’ reduction.

Keywords: nuclear flexibility; VRES; power system dynamics; inertia; electric vehicles; frequency response; batteries; energy storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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