Commission Regulation (EU) 2017/2196Show full title

Article 11 U.K. Design of the system defence plan

1. By 18 December 2018, each TSO shall design a system defence plan in consultation with relevant DSOs, SGUs, [F1 the regulatory authority] and the other TSOs in its synchronous area.

2. When designing its system defence plan, each TSO shall take into account at least the following elements:

(a) the operational security limits set out in accordance with Article 25 of Regulation (EU) 2017/1485;

(b) the behaviour and capabilities of load and generation within the synchronous area;

(c) the specific needs of the high priority significant grid users listed pursuant to point (d) of paragraph 4; and

(d) the characteristics of its transmission system and of the underlying DSOs systems.

3. The system defence plan shall contain at least the following provisions:

(a) the conditions under which the system defence plan is activated, in accordance with Article 13;

(b) the system defence plan instructions to be issued by the TSO; and

(c) the measures subject to real-time consultation or coordination with the identified parties.

4. In particular, the system defence plan shall include the following elements:

(a) a list of the measures to be implemented by the TSO on its installations;

(b) a list of the measures to be implemented by DSOs and of the DSOs responsible for implementing those measures on their installations;

(c) a list of the SGUs responsible for implementing on their installations the measures that result from the mandatory requirements set out in Regulation (EU) 2016/631, (EU) 2016/1388 and (EU) 2016/1447 or from national legislation and a list of the measures to be implemented by those SGUs;

(d) a list of high priority significant grid users and the terms and conditions for their disconnection, and

(e) the implementation deadlines for each measure listed in the system defence plan.

5. The system defence plan shall include at least the following technical and organisational measures specified in Section 2 of Chapter II:

(a) system protection schemes including at least:

(i)

automatic under-frequency control scheme in accordance with Article 15;

(ii)

automatic over-frequency control scheme in accordance with Article 16; and

(iii)

automatic scheme against voltage collapse in accordance with Article 17.

(b) system defence plan procedures, including at least:

(i)

frequency deviation management procedure in accordance with Article 18;

(ii)

voltage deviation management procedure in accordance with Article 19;

(iii)

power flow management procedure in accordance with Article 20;

(iv)

assistance for active power procedure in accordance with Article 21; and

(v)

manual demand disconnection procedure in accordance with Article 22.

6. The measures contained in the system defence plan shall comply with the following principles:

(a) their impact on the system users shall be minimal;

(b) they shall be economically efficient;

(c) only those measures that are necessary shall be activated; and

(d) they shall not lead the TSO's transmission system or the interconnected transmission systems into emergency state or blackout state.

Textual Amendments

F1 Words in Art. 11(1) 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. 2 para. 11 (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)