Importance of linking inertia and frequency response procurement: the
Great Britain case
Great Britain case
File(s)
Working paper
Author(s)
Baig, Aimon Mirza
Badesa, Luis
Strbac, Goran
Type
Working Paper
Abstract
In order to decarbonise the electricity sector, the future Great Britain (GB)
power system will be largely dominated by non-synchronous renewables. This will
cause low levels of inertia, a key parameter that could lead to frequency
deterioration. Therefore, the requirement for ancillary services that contain
frequency deviations will increase significantly, particularly given the
increase in size of the largest possible loss with the commissioning of large
nuclear plants in the near future. In this paper, an inertia-dependent
Stochastic Unit Commitment (SUC) model is used to illustrate the benefits of
linking inertia and frequency response provision in low-inertia systems. We
demonstrate that the cost of procuring ancillary services in GB could increase
by 165% if the level of inertia is not explicitly considered when procuring
frequency response. These results highlight the need to re-think the structure
of ancillary-services markets, which in GB are nowadays held one month ahead of
delivery.
power system will be largely dominated by non-synchronous renewables. This will
cause low levels of inertia, a key parameter that could lead to frequency
deterioration. Therefore, the requirement for ancillary services that contain
frequency deviations will increase significantly, particularly given the
increase in size of the largest possible loss with the commissioning of large
nuclear plants in the near future. In this paper, an inertia-dependent
Stochastic Unit Commitment (SUC) model is used to illustrate the benefits of
linking inertia and frequency response provision in low-inertia systems. We
demonstrate that the cost of procuring ancillary services in GB could increase
by 165% if the level of inertia is not explicitly considered when procuring
frequency response. These results highlight the need to re-think the structure
of ancillary-services markets, which in GB are nowadays held one month ahead of
delivery.
Date Issued
2021-03-09
Citation
2021
Publisher
arXiv
Copyright Statement
© 2021 The Author(s)
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://arxiv.org/abs/2010.07161v2
Grant Number
EP/R045518/1
Subjects
math.OC
math.OC
Notes
2021 IEEE Madrid PowerTech
Publication Status
Published