Dorsalys blends an HVB substation into the landscape near Valence TGV station (26) for Enedis

To build Grand CourbisHVB substation, our specialists installed a 225 kV transformer cubicle. They set up the underground MV links and made the connections. Their remit includedwiring the Digital Control Unit (PCCN)and HV/LV wiring forthe MV switchboard, and also creatingauxiliarypower supplies and installing TCFM (Centralized Musical Frequency Remote Control) to enablethe transmission of tariff signals.

" We masked the substation by creating a greenmound, to make it blend effectively into the landscape. The pebbles we normally use were replaced by grass to keep the slope stable and the vegetation under control. Enedis' commitment to the environment is reinforced by its 'zero phyto' strategy, since the substation will be operatedwithout the use of any phytosanitary products", explainedbusiness manager Alison Contessot.

Since thehigh-speed train track runs between the substation and the connecting line, French electricity transmission operator RTE (in charge of the high-voltage network) installed a cable protection system and a pylonhigher than the others,so that our experts could connect their225/20 kV substation to the Enedis network.