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Annex III

United Kingdom

Original text. Later amendments are not shown.

Frequency quality defining parameters referred to in Article 127:

Table 1

Frequency quality defining parameters of F1the GB synchronous area

F2...GB......
standard frequency range...± 200 mHz......
maximum instantaneous frequency deviation...800 mHz......
maximum steady-state frequency deviation...500 mHz......
time to recover frequency...1 minute......
frequency recovery range...± 500 mHz......
time to restore frequency...15 minutes......
frequency restoration range...± 200 mHz......
alert state trigger time...10 minutes......

Frequency quality target parameters referred to in Article 127:

Table 2

Frequency quality target parameters of F3the GB synchronous area

F4...GB......
maximum number of minutes outside the standard frequency range...15 000......

Annotations

Textual amendments

F1

Words in Annex 3 Table 1 heading substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 127(a) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F2

Words in Annex 3 Table 1 omitted (E.W.S.) (31.12.2020) by virtue of The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 127(b) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F3

Words in Annex 3 Table 2 heading substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 127(a) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F4

Words in Annex 3 Table 2 omitted (E.W.S.) (31.12.2020) by virtue of The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 127(b) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)