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ABB handed over LitPol Link to Lithuanian Litgrid

Staff writer |
Power and automation technology group ABB has handed over the LitPol Link to the Lithuanian transmission system operator Litgrid.

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This classic high-voltage direct current (HVDC) link which connects the power grids of Lithuania and Poland not only enables power trading between the two countries, but also strengthens and secures power supply in the region by opening up new cross-border energy sources.

The LitPol Link is part of the European Union’s Baltic Ring initiative aimed at interconnecting the grids of nine countries around the Baltic Sea i.e. Lithuania, Poland, Germany, Denmark, Norway, Sweden, Finland, Estonia and Latvia. The LitPol Link now closes the Ring.

A pooling of these countries’ diverse power resources brings numerous advantages. In times when one resource is in short supply or expensive, more power can be generated and shared from more available and less expensive resources, while peak demands in different regions can be covered by shifting power through the Ring.

Until now, the Lithuanian electricity system had only been connected with the grids of Latvia, Estonia and the countries to the east. The LitPol Link is ABB’s fifteenth interconnection in the Baltic region alone.

The 500 megawatts interconnection deploys ABB’s HVDC technology in a “back-to-back” solution, which enables electricity to be transmitted between the two grids. A conventional alternating current (AC) connection would not be feasible as the Lithuanian and Polish power grids are not synchronized.

HVDC technology overcomes this constraint and will provide additional capabilities such as power reversal on-demand – which enables trading and power compensation to reinforce the AC grid and enhance stability.

Advanced control and protection features will enhance grid reliability and efficiency, bringing benefits to the owner, operator and consumers.

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