As part of the Black Sea Transmission Network Project, one of the most significant infrastructure projects in Georgia, the two HVDC back-to-back links are each to transmit 350MW of power generated in various hydropower plants in Georgia to Turkey.

In addition to the HVDC back-to-back links the scope of supply will also include system control equipment, converter transformers, switchgear (500/400/220 kV), thyristor valves and AC filters. The first HVDC back-to-back-link will come on line in late May 2012, with the overall project scheduled for completion in May 2013.

“With our HVDC technology we’re creating an energy bridge for the transmission of eco-friendly electric power between Georgia and Turkey, which will help to meet Turkey’s growing power demand,” said Udo Niehage, CEO of the Power Transmission Division of Siemens Energy. The Siemens HVDC back-to-back links will not only connect the two power supply networks but will also enable control of the flow of electric power on the energy bridge to Turkey. The HVDC technology with its fast control function will also contribute toward stabilization of the connected grids, which is a major advantage in the event of system disturbances and blackouts.

The converter substation with the two 350MW back-to-back links and the associated switchgear will be erected in the vicinity of the city of Akhaltsikhe, which is located in southern Georgia on the Turkish border. There, the systems will be connected via overhead transmission lines with Georgia’s and Turkey’s high-voltage networks.