System Operation Agreement Nordic

The SOA contains the common operating principles used by Nordic TRMs to ensure that the Nordic interconnection system operates with a high level of reliability and quality within the framework of national and European regulations. This document contains recommendations on cooperation between REGN-E and third-country STRs and is adopted in accordance with Article 8, paragraph 3, paragraph c), Regulation (EC) No. 714 / 2009. In this document, ENTSO-E`s mission is to facilitate cooperation and coordination between TMRs to ensure effective and transparent access to transport networks and to enable coordinated and forward-looking planning. Assistance in the technical development of the transport network, including the creation of interconnection capabilities with third-party TRM, is a fundamental aspect of ENTSO-E`s mission. The exchange of best practices on traditional and new themes will help all parties involved move towards a sustainable energy future. Keep in mind that the new ICS reports are included in the annual reports of the system operating code The report analyses the effects of the decrease in inertia of the energy system of continental Europe, which is due to a transfer of production from conventional synchronous production to the non-synchronous electric generation. By performing calculations using a dynamic average frequency model, the responses to the overrequency response (LFSM-O) using the authorized rate of change in system frequency (RoCoF) are identified as one of the most important input parameters. These production facilities are generally linked to distribution systems and are subject to connection requirements consistent with the historical planning and operating principles of distribution systems originally designed for passive loads. If applied simultaneously to a large number of units, these unique frequency thresholds can compromise the security of the entire interconnection system in the event of a frequency deviation. In order to simplify the model and make network data accessible to third parties, some simplifications and anonymization procedures have been implemented.

However, all of these adjustments were made in such a way as not to affect the dynamic behaviour of the electrical system.