4.
Text with EEA relevance.
Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (Text with EEA relevance. ) · European Union
TSOs shall implement the frequency restoration power interchange between LFC areas of the same synchronous area through one of the following actions: defining an active power flow over a virtual tie-line which shall be part of the FRCE calculation where FRR activation is automated; adjusting a control program or defining an active power flow over a virtual tie-line between LFC areas where FRR activation is manual; or adjusting the active power flows over HVDC interconnectors.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.