Reconstruction of Neris transformer substation
Status: construction works are in progress.
Objective of the project
The aim of the project is to reinforce the Vilnius electricity hub, which will ensure the reliability of electricity supply after synchronisation with the Continental European grids and the growing electricity needs of the Lithuanian capital.
Significance of the project
The reorientation of the Lithuanian electricity system to operate in synchronous mode with the Continental European grids must ensure reliable electricity transmission and increase the security of electricity supply.
Synchronisation with Continental European grids is the last stage of Lithuania’s independence, granting it energy freedom. Our electricity system is currently still dependent on frequency control in Russia, but by 2025 it will be operating in a single synchronous area with systems in other European countries.
The Neris transformer substation is one of three substations in Lithuania that will be equipped with synchronous compensators, which are important for system reliability. They will ensure the inertia of the electricity system, help maintain system stability and contribute to the development of renewable energy in the country.
This substation in eastern Lithuania also plays an important role in strengthening Lithuania’s internal electricity grids, as it will be connected to the newly built 330 kV Vilnius-Neris overhead line, which will complete the electricity ring around Vilnius. The ring will connect three substations: the Vilnius transformer substation in Trakai Vokė, the Lietuvos elektrinė substation in Elektrėnai and the Neris substation in Nemenčinė, which is under reconstruction. The newly formed electricity ring is needed to keep Lithuania’s electricity system running smoothly and reliably when the lines with Belarus are disconnected in the eastern part of Lithuania.
In order to properly prepare the substation for both the installation of a new synchronous compensator and the connection of the Vilnius-Neris 330 kV overhead line, the Neris transformer substation must be reconstructed.
General project information:
The reconstruction of the Neris substation, which has been in operation since 1972, will include the installation of two new 300 MVA autotransformers, the replacement of all the equipment in the 330 kV switchyard, and the construction of the new equipment required to connect the 330 kV Vilnius-Neris line. A new 330 kV busbar bridge from the 330 kV switchyard will also be built and the location of the future synchronous compensator will be installed. The project also includes the reconstruction of a 110 kV switchyard, the installation of a new 10 kV closed-type switchyard and other works.
Calendar of works in quarterly format
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Activity
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Date of implementation
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Stage I disconnection works to dismantle the old substation equipment (half of the 330 kV, 110 kV and 10 kV switchgear and the AT-2 autotransformer will be disconnected)
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3rd quarter of 2022
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Stage I - Demolition of old facilities and installation of new foundations
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4th quarter of 2022
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Stage I installation works (330 kV, 110 kV and 10 kV switchgear and AT-2 autotransformer)
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1st/2nd quarter of 2023
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Testing and adjustment works for Stage I equipment (installation of 330 kV, 110 kV and 10 kV switchgear and AT-2 autotransformer, landscaping and fencing)
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3rd/4th quarter of 2023
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Stage II disconnection works to remove the remaining old substation equipment (half of the 330 kV, 110 kV and 10 kV switchgear and the AT-1 autotransformer will be disconnected)
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1st quarter of 2024
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Stage II - Demolition of old facilities and installation of new foundations
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2nd quarter of 2024
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Stage II installation works (330 kV, 110 kV and 10 kV switchgear and AT-1 autotransformer)
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3rd quarter of 2024
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Testing and adjustment works for Stage II equipment (330 kV, 110 kV and 10 kV switchyards and AT-2 autotransformer), landscaping and fencing
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4th quarter of 2024
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