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Conditions for regional frequency stability in power system scheduling—Part II: application to unit commitment

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Title: Conditions for regional frequency stability in power system scheduling—Part II: application to unit commitment
Authors: Badesa, L
Teng, F
Strbac, G
Item Type: Journal Article
Abstract: In Part I of this paper we have introduced the closed-form conditions for guaranteeing regional frequency stability in a power system. Here we propose a methodology to represent these conditions in the form of linear constraints and demonstrate their applicability by implementing them in a generation-scheduling model. This model simultaneously optimises energy production and ancillary services for maintaining frequency stability in the event of a generation outage, by solving a frequency-secured Stochastic Unit Commitment (SUC). We consider the Great Britain system, characterised by two regions that create a non-uniform distribution of inertia: England in the South, where most of the load is located, and Scotland in the North, containing significant wind resources. Through several case studies, it is shown that inertia and frequency response cannot be considered as system-wide magnitudes in power systems that exhibit inter-area oscillations in frequency, as their location in a particular region is key to guarantee stability. In addition, securing against a medium-sized loss in the low-inertia region proves to cause significant wind curtailment, which could be alleviated through reinforced transmission corridors. In this context, the proposed constraints allow to find the optimal volume of ancillary services to be procured in each region.
Issue Date: 1-Nov-2021
Date of Acceptance: 1-Apr-2021
URI: http://hdl.handle.net/10044/1/88567
DOI: 10.1109/tpwrs.2021.3073077
ISSN: 0885-8950
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Start Page: 5567
End Page: 5577
Journal / Book Title: IEEE Transactions on Power Systems
Volume: 36
Issue: 6
Copyright Statement: © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Commission of the European Communities
Engineering & Physical Science Research Council (EPSRC)
National Grid Electricity Transmission Plc
National Grid Electricity Transmission Plc
Funder's Grant Number: J15119 - PO:500174140
PO: 3400015516
PO: 1000088670
Keywords: math.OC
0906 Electrical and Electronic Engineering
Publication Status: Published
Online Publication Date: 2021-04-13
Appears in Collections:Electrical and Electronic Engineering
Grantham Institute for Climate Change
Faculty of Natural Sciences
Faculty of Engineering