Porąbka Żar
Poland relies on TMclad
The T.M. switchboard and its reliability will be an integral part of the renovation project of the historic Polish hydroelectric power plant in Porąbka Żar.
The power plant
Built between 1963 and 1971 on the Soła River in the Silesia region, the Porąbka Żar power plant is the second largest hydroelectric power plant in Poland and one of the largest in Europe. Consisting of three dams, which form two reservoirs: Lake Porąbka and Lake Żar, the plant currently has an installed capacity of 600 MW and produces approximately 1.2 TWh of energy per year, supplying power to approximately one million homes.
The PorąbkIt is currently the second largest power plant in Poland
Consisting of three reservoirs: Porąbka (the largest reservoir in Poland), Żar and Skawica and their respective dams, it is equipped with three Kaplan turbines, each with a capacity of 200 MW, capable of exploiting the 163 million cubic metres of water accumulated in the three reservoirs.
For the plant, PGE announced an ambitious €200 million renovation project in 2022, which will start in 2024 and will include the replacement of the turbines, the installation of new distribution boards, the modernization of the control systems and the installation of new safety systems.
The role of T.M.
The modernization of the turbines and the control and safety systems will allow to increase the efficiency of the plant and reduce emissions by extending the useful life of the plant by at least another 20 years. As a complement to this efficiency, the medium voltage electrical distribution will be entrusted to four new TMclads of 17.5kV, 2000A and 31.5kA, with two compartments each, equipped with a high resistance structure specifically designed by the R&D T.M.
Project
Porąbka Żar
TECHNICAL SPECIFICATION
Nominal Voltage: 17,5 kV
Service Voltage: 13,8 kV
Rated Current: 2000 A
Switch:
ABB VD4 extractable, vacuum,
from 17,5 kV, 2000 A and 31,5 kA
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