EPK Lagging Derogation Decision
| Published date | 30 January 2024 |
| Year | 2024 |
| Energy Sector | Electricity Networks |
_________________________________________________________________________
Utility Regulator
Queens House, 14 Queen Street, BELFAST, BT1 6ED
T: +44 (0) 28 9031 1575 F: +44 (0) 28 9031 1740 W: www.uregni. gov.uk
Stephen Brownlees
Deputy Head of Maintenance and Engineering
Kilroot Power Station
Larne Road
Carrickfergus
BT38 7LX
21 December 2023 Our Ref: NET/E/DH/772
Dear Stephen,
RE: Request by EP Kilroot for Derogations of KGT3 and KGT4 Generators at
Kilroot Power Station, Regarding Compliance with Grid Code Clause CC.
S1.1.3.2 (i) “rated power factor (lagging)=0.8”
Background:
The Authority
1
has decided to grant this application by EP Kilroot Ltd (EPK) for
Derogation. The Direction (the EPK Lagging Direction) and our reasons for
making it are fully set out in this Decision Letter and an Annex to the Letter, both
of which we will also publish.
The request (the ‘derogation request’) is in respect of two Open Cycle Gas
Turbines (OCGTs) at Kilroot Power Station – KGT3 and KGT4. The Direction
concerns section CC. S1.1.3.2 of the Grid Code, and the request from EP Kilroot
that the Authority grants lifetime derogations from compliance with CC. S1.1.3.2
(i). It is stated in CC. S1.1.3.2 that:
“For CDGUs and for CCGT Installations (in relation to the CCGT Modules therein)
the Reactive Power capability shall as a minimum be:
(i) Rated power factor (lagging) = 0.8;
(ii) Rated power factor (leading) = 0.95; and
(iii) Short circuit ratio not less than 0.5.”
1
In this letter (and the direction found at the Annex) the words “Authority” “we” “our” “us” and “UR”
are used interchangeably to refer to the Northern Ireland Authority for Utility Regulation.
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