Founded as a regional company, SCC’s main objective is to develop necessary services defined by ENTSO-E’s Policy Paper “Future TSO Coordination for Europe” and by ENTSO-E MLAs related to RSCs in order to fulfil operational planning standards which are defined by European Network Codes/Guidelines. According to RSCI MLA, main services that RSCs should provide to TSOs are:
- Validation and merging of Individual Grid Models (IGMs) – Common Grid Model (CGM) creation,
- Coordinated Security Analysis (CSA),
- Coordinated Capacity Calculation (CCC),
- Outage Planning Coordination (OPC) and
- Short-Term Adequacy (STA) forecast.
However, the scope of RSC work did not stop on five core services – time proved that RSCs are important pan-European factor regarding the increase of cooperation between TSOs. So, when new regional challenges emerged, ENTSO-E TSOs decided to introduce several additional RSC services that will cover following new procedures:
- Common Grid Model Alignment (CGMA),
- Critical Grid Situation (CGS),
- Emergency and Restoration (E&R) planning.
IGMs validation and CGM creation
After validation and correction of Individual Grid Models (IGMs), the process of merging of IGMs is launched. The result of this process is Common Grid Model (CGM) on Continental Europe level. CGM is basis for all other RSC services, since all of them include load flow calculations. Based on the collected IGMs, the CGMs of Continental Europe are created for all desired upcoming hours.
Coordinated Security Analysis (CSA) is one of core RSC services with the main purpose to identify operational security risks. CSA process is performed in two forecast horizons: DACF and IDCF.
Coordinated Capacity Calculation (CCC) is one of core RSC services established with a goal to allocate available cross-border electricity transfer capacity for different time horizons, in order to maximise transfer capacity offered to the market
Outage Planning Coordination (OPC) process is one of core RSC services, performed on pan-European level, with a goal to establish a common medium- and long-term outage planning process based on predefined standards
Short Term Adequacy (STA) is one of core RSC services that aims to determine whether the available generation and possibilities for import satisfy the forecasted load in the week ahead time horizon
Critical Grid Situation (CGS) represents one of the additional RSC services, which was introduced after the cold spell in January 2017. Synchronous effect of cold spell and outages of particular generation units during the January 2017 led to critical network situation in Western and South-East Europe countries.
Common Grid Model Alignment (CGMA) process is one of the additional RSC services, which can be defined as a set of procedures by which the initial estimates of net positions are revised such that the resulting set of net positions is balanced
The Network Code on Electricity Emergency and Restoration (NCER) describes regional coordination between TSOs in the network states of emergency and restoration (E&R). The main objective of this process is to bring the system back to the normal state.