Day Ahead PDF Print E-mail

The Coreso engineer D-1 activity aims at monitoring and strengthening power security on CWE grid in day ahead, based on a broader view.

To achieve this target, the activity includes several steps:

- The DACF files [1] made available by each TSO of the area are merged to create a Continental Europe wide merged file. For this first operational step, a particular attention is given to the data quality in order to guarantee the precision of further results.

- From this merged file, the security analysis performed in Coreso simulates the tripping of any 380kV line and generator connected to 380kV grid in CWE area. Moreover, as it is included in ELIA and RTE’s internal Grid Procedure, tripping of 380kV busbars are simulated in Belgium and in France (as CWE area could be influenced). This complete analysis is processed for a minimum of 6 timestamps defined by original DACF files. In addition, in case of particular situation induced by any special context (exchange programs in CWE area, outage, level of wind generation...), Coreso engineers could add other timestamps in the scope.

- The last step for D-1 activities consists on taking into account the constraints detected for forthcoming day and find remedial action to solve them. Some variants could also be studied from the original base case such as simulate fluctuation in the exchange programs on a particular border regarding the available intraday capacity or new hypothesis for wind power generation. These solutions are then discussed by phone with the concerned TSO and published in a Day-Ahead Report.

The decision to implement remedial actions needed to master the risks remains to the TSOs: Coreso only delivers proposals and advices.

[1] DACF (Day Ahead Congestion Forecast) file : every day, each TSO from the Regional Group Continental Europe of ENTSO-E creates a particular file which give a vision of their own grid for the forthcoming day. This file contains all the relevant information concerning load and generation, grid elements (outages, topology, electotechnical data,...). Moreover, the global balance (ie flows expected on tie lines) is set respecting the data published on Vulcanus website.