Frequency coupling between synchronous areas
Article 172
1. All TSOs of the synchronous areas connected via an HVDC interconnector shall have the right to implement a frequency coupling process to provide linked frequency response. The frequency coupling process may be used by TSOs to enable FCR exchange and/or sharing between synchronous areas. 2. All TSOs of each synchronous area shall specify the technical design of the frequency coupling process in the synchronous area operational agreement. The frequency coupling process shall take into account: (a) the operational impact between the synchronous areas; (b) the stability of the FCP of the synchronous area; (c) the ability of the TSOs of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127; and (d) the operational security. 3. Each HVDC interconnector operator shall control the active power flow over the HVDC interconnector in accordance with the implemented frequency coupling process.