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Reconstruction of Leisi 110 kV substation



Buildings

Civil engineering

Energy supply

Concrete works


Location

Description of work

 

 

 


Renovated in 2016, the 110kV substation in Leisi, Saaremaa Island is a key link in the power grid of Estonia’s two largest islands, supplying electricity to all of Hiiumaa and northern and western Saaremaa. Elering AS renovated the substation as the Soviet-era equipment had depreciated, the goal being to help realize the development plan for the Estonian islands. In future, the medium-voltage cables leading from the substation to Hiiumaa are planned to be replaced by high-voltage cables. A possibility of connecting the wind farms in coastal areas is also envisioned.

AS Merko Infra carried out the substation renovation as a turnkey project. The works included erection of a 110kV H-type switchgear, a new two-storey substation building and laying access roads, establishing automation and relay protection system and dismantling old equipment. Construction took place with the high-voltage equipment partly still in operation, in cramped quarters. Modern substation equipment can be monitored and controlled remotely, allowing Elering to take rapid and efficient action in case of an outage.

Client:
Elering AS
Name of the project:
Reconstruction of Leisi 110 kV substation
Category:
Energy supply
Type of construction:
Substations
Designer:
AS Merko Inrfa and AS Merko Ehitus Eesti
Description of work:
Reconstruction
Country:
Estonia
Address:
Kuressaare mnt 11, Leisi, Saaremaa
Beginning of the project:
2015
Year of completion:
2016

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