Contracted refurbishment of hydro power plant in Bulgaria - Hydro Balkans
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Contracted refurbishment of hydro power plant in Bulgaria

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The consortium consisting of Končar KET and ČKD Blansko Holding from the Czech Republic contracted with the Bulgarian Power Authority NEK EAD the refurbishment project of Vacha-1 HPP, the accompanying 110 kV HPP plant and other integrated control systems of auxiliary systems at the HPP.

Consortium consisting of KONČAR – Power Plant and Electric Traction Engineering (Končar KET) and ČKD Blansko Holding from the Czech Republic contracted a refurbishment project on 27 August 2019 in Sofia with Natsionalna Elektricheska Kompania – NEK EAD, Bulgarian Power Authority, for Vacha-1 HPP, the accompanying 110 kV HPP plant and other integrated control systems of auxiliary systems at the HPP. Darijo Runjić, member of the Management Board of KONČAR – KET signed the contract on behalf of the consortium and Ivan Yonchev, NEK EAD Chief Executive Officer, on behalf of NEK EAD. Boris Mlinarić will be the project manager on behalf of KET.

As part of plant refurbishment, Končar KET, as consortium leader, will undertake replacing a part of the equipment in the external 110 kV switchgear, delivery of new 110 kV and 20 kV relay protection, hydro power plant control systems, excitation and turbine control systems for generation units 3 and 4, control system of pre-turbine inlet valve on generation units 3 and 4, as well as full replacement of generation unit 2 with the accompanying systems and a new system for power metering, as well as the assembly, testing and commissioning of delivered equipment.

Končar KET will also prepare the entire electrical engineering design and the companies KONČAR – Generators and Motors, KONČAR – Electronics and Informatics and KONČAR – Switchgear will participate in the contract as equipment suppliers.

Vacha -1 HPP is the last power plant located on the Dospat-Vacha cascade. The hydro power plant has four units with a total installed power of 14 MW. These are Francis turbines with nominal power of 3.5 MW each. Generation units 1 and 2 were commissioned in 1933, and generation units 3 and 4 between 1952 and 1953.

The project completion is scheduled for the end of 2020.

NEK EAD is entirely owned by Bulgarian Energy Holding (BEH EAD), which was founded in 2008 after renaming the company Bulgargs Holding EAD, and is state-owned.

In addition, this is not the first hydro power plant project contracted with the Bulgarian Power Authority. The contracts for the refurbishment of Belmeken RHPP, Sestrimo HPP and Momina Klisura HPP are ongoing.



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