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Linked Projects

Challenge / Goal

This pilot project aimed to find new and innovative technological solutions to promote the integration of renewable energy sources (RES) and distributed generation (DG) in smart grid systems. In particular, the purpose was to develop, implement and test in field innovative devices to demonstrate the technical feasibility of increasing the monitoring of the distribution grid and the controllability of RES connected at lower voltage levels. DG and RES do not currently participate in real-time management of the grid and so to enable DG to become active players in the electricity system, it is necessary to improve the observability of the whole grid and to allow DER and RES to provide ancillary services. The contribution of these services must also be analysed for accuracy and reliability. Final goal was to explore the capability of hydro power stations connected to the distribution grid and located in an alpine region to be centrally controlled from the TSO SCADA to provide a contribution for aFRR and voltage regulation. 

Solutions

The functionalities developed in the project are: 1) The observability module, to have an accurate real time observation of the Medium Voltage (MV) and Low Voltage (LV) sources. Measurements and estimations of the power of the plants located at distribution level are aggregated and provided to the Transmission System Operator (TSO) to achieve a continuous and adequate monitoring of the grid. 2) The voltage regulation, to achieve a hierarchical control of the reactive power regulation through generators connected to both HV and MV grid. 3)The power/frequency regulation, in particular, the automatic Frequency Restoration Reserve (aFRR), by generators connected to MV grid, currently not included in the Italian market. 

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Time Period

Planing Time: 2 - 5 years

Implementers

Terna, RSE, Edyna, Siemens, Selta