14 hydraulic turbines out of 18 have been modernized at the Cheboksarskaya HPP

3/4/2019, Official portal of the authorities of the Chuvash Republic

After modernization completion, a hydropower unit with station number 3 was put into operation at the Cheboksarskaya HPP. Thus, at the moment, hydraulic turbines in 14 out of 18 hydropower units have been updated at the plant. The work was carried out as part of implementation of the RusHydro Comprehensive Modernization Program.

In the course of modernization, the design adjustable-blade mode of the hydraulic turbine was restored. The turbines of the Cheboksarskaya HPP, which were put into operation in the 1980s, have an environmentally friendly design with oil-free impeller bushings. Over time, the plant machines lost the ability to turn the blades and were fixed in propeller mode, which reduced the operation efficiency. To return turbines to their design characteristics, they were reconstructed at the enterprises of the Power Machines concern by replacing the blade turning mechanism.

The hydrogenerator on hydropower unit number 3 was also updated. Experts of the RusHydro subsidiary, Gidroremont-VKK JSC, replaced the generator stator and the rotor rim iron. The performed works increased the reliability of operation of the generator.

Modernization, similar in scope of work, is nearing completion at another hydropower unit at the Cheboksarskaya HPP – with station number 11.

The modernization is aimed at improving the safety and reliability of operation of equipment of the hydroelectric power station, reducing repair and operating costs. Its schedule has been agreed with the System Operator of the Unified Energy System and does not limit the power supply of consumers.

RusHydro is implementing the Comprehensive Modernization Program for hydro-generating facilities, under which it is planned to replace half of the fleet of turbines, generators and transformers of HPP and PSPP of RusHydro. Such an ambitious program for the replacement of outdated and worn-out equipment for domestic energy is unique and unprecedented. Its peculiarity is the orientation not to a point replacement of individual assemblies and units, but to a comprehensive modernization of generating facilities as unified technological complexes, including the replacement or reconstruction of main and auxiliary equipment, common plant systems, and hydraulic structures.