Special protection schemes
Article 37
Where a TSO uses a special protection scheme, it shall: (a) ensure that each special protection scheme acts selectively, reliably and effectively; (b) evaluate, when designing a special protection scheme, the consequences for the transmission system in the event of its incorrect functioning, taking into account the impact on TSOs concerned; (c) verify that the special protection scheme has a comparable reliability to the protection systems used for the primary protection of transmission system elements; (d) operate the transmission system with the special protection scheme within the operational security limits determined in accordance with Article 25; and (e) coordinate special protection scheme functions, activation principles and setpoints with neighbouring TSOs and affected transmission-connected DSOs, including closed distribution systems and affected transmission-connected SGUs.