At the Krasnoyarsk HPP, after modernization, hydraulic unit No. 3 was put into operation ahead of schedule
June 10 8:40
At the Krasnoyarsk hydroelectric power station, part of the En+ energy holding, the modernization of the eighth of twelve hydroelectric units was completed ahead of schedule.
Before the modernization began, hydraulic unit No. 3 had worked for more than 50 years. The work took six months and was carried out as part of the New Energy program. The equipment has now been put back into operation.
The key result was a high-quality technological update: a new impeller of a unique design was installed on the hydraulic unit, and the block transformer was replaced. This will increase power generation during operation of the updated unit by 2.7% and increase its reliability.
“Russian engineers developed a new impeller with a unique blade profile. This design made it possible to increase cavitation resistance, reduce vibration and noise, increase the efficiency of the hydraulic unit, and also ensure the delivery of more power at lower pressures. The latter is especially important for electricity production in dry years. The weight of the impeller is 240 tons, the maximum diameter is 8.5 meters, and the height is 4 meters,” the press service of the hydroelectric power station recalled.
The new Russian-made power transformer is equipped with a modern online monitoring system for operational control of its condition. Due to its significant dimensions and weight, its delivery and installation became a complex logistics and engineering task. The weight of the transformer in transport condition is more than 300 tons, and the length and height are 10 and 4 meters, respectively.
The modernization of all twelve hydraulic units of the Krasnoyarsk HPP will be completed by 2031. Investments in replacing impellers amount to more than 13 billion rubles. The increased efficiency of the new impellers will increase the production of renewable electricity by more than 2% and, indirectly, reduce the electrical load on coal-fired thermal power plants, which in turn will have a positive impact on the environmental situation in the region.
Let us recall that the “New Energy” modernization program is a large-scale En+ project for the technical re-equipment of the four largest hydroelectric power stations of the Angara-Yenisei cascade: Krasnoyarsk, Bratsk, Irkutsk and Ust-Ilimsk in order to increase the reliability of equipment and increase electricity production. Total investments in the program will amount to about 21 billion rubles.
