In accordance with the requirements and procedures of TERNA

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According to the national primary reserve remuneration programme (Annex 73 - TERNA), TERNA requires each participant to verify the functionality of the installed UVRP system (Unità di Verifica della Regolazione Primaria, Primary Reserve Control Unit).

The role of DNV
DNV offers services for the verification of UVRP installations. For this purpose DNV has Italian technical qualified personnel able to respond to customer needs: flexibility, expertise and processing speed are the characteristics that distinguish the UVRP verification services offered by DNV. DNV is accredited by TERNA and has a century of experience in the field of inspection, testing and certification of high voltage components.

UVRP verification process
The DNV UVRP verification service fully complies with the requirements given by TERNA. There are six main phases in the DNV UVRP verification programme:

1. Documentation check
   The documentation provided by the customer is studied and analysed by DNV
2. Inventory of the UVRP system components
   The correspondence between the documentation and installed equipment is verified
3. Electrical measurements
   The accuracy of the measurement chain of the UVRP components is verified
4. Validity of UVRP-generated files format and content
   The presence, correctness and quality of information in the system-generated (UVRP) files are checked
5. Remote verification of the presence of primary control
   The logic in the algorithms used in the 60870-5-104 communication with TERNA, and the correctness of the protocol are validated
6. Energy check
   Using particular frequency profiles, The amount of energy calculated by the model is compared to the actual values measured by the turbine, so as to validate the model.