Test Specification TC9.TS01

TC9.TS01

TC9

Characterisation of direct method

The goal of this Test is to evaluate the performance of a direct congestion management method. The results of the developed congestion forecasting model will be compared to the actual values to assess its accuracy. Afterwards, the efficiency of the method will be evaluated in terms of target metrics specified in the Test Case description.

The Test System includes a LV (0.4 kV) network with realistic data provided by a local utility company. This network consists of three feeders with various loads and PV systems connected along the feeders.

Voltages, currents of all grid components.

Weather conditions (hence DER production), grid topology, household load profiles, controllable generation production

• Initialize the simulation, achieving a steady state condition;
• Keep the simulation running with the feeding load and generation profiles in order to create several congestion conditions (peak of load or peak of generation) over the whole simulation run
• Evaluate the results of the test in terms of transformer loading power, flexibility procured by the DSO, and procurement cost in two cases with and without the congestion management functionality in the DMS controller
• Reinitialize the simulation and repeat the test with different congestion condition.

Transformer and feeders loading in permissible ranges.

The evolution of the congestion at the MV/LV transformer is illustrated in the figure below:

The evolution of the system state is shown in the figures below:

Solar profile:

Wind profile:

n/a.

15 minutes

Measurement uncertainty

Low accuracy of the congestion classification model during the training process, i.e., less than 80%