Belgian wind farm delivered balancing services

The Estinnes wind farm features 11 Enercon E-126 wind turbines. (Photo: WindVision)
The Estinnes wind farm features 11 Enercon E-126 wind turbines. (Photo: WindVision)

WindVision, Enercon, Eneco and Elia announce the successful finalization of the “R2 downward wind” pilot project, demonstrating the technical capability of wind farms to deliver advanced balancing services to the electricity grid.

The pilot project investigates the technical capability of wind farms to regulate their power infeed in real-time to balance the active power in the grid. This will facilitate the further integration of renewables in the grid and as such contribute to the fulfilment of the European 2020 energy and climate targets.

Within the framework of this project, the Enercon turbines of the Estinnes wind farm of WindVision technically contributed, for a period of about 2 months, to the delivery of secondary control power to the Belgian grid by continuously changing the active power output of the turbines according to a set-point defined by Elia. Eneco, being the balancing responsible party of the wind farm, provided nominations for the available secondary control capacity on the wind farm to Elia. The project set-up was such that there was no interference with the balancing market.

The results of the pilot are very promising for a future participation of wind farms in the secondary control market (automatic Frequency Restoration Reserves) in Belgium. The capability of wind farms to perform fast regulation of their production, with relative high accuracy, has been demonstrated. But the pilot project has also identified some technical and market related aspects that must be further investigated to facilitate a commercial participation of wind farms in this market in the future.

Katharina Garus / Enercon

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