The inter-lock hydroelectric station is a hydroelectric power station on the Volga River , in the Volgograd Region , Volzhsky . It is part of the Volgograd hydroelectric complex structures, using for its work the pressure created by the retaining structures of the Volga hydroelectric station . The station is integrated into the design of the shipping locks of the hydroelectric complex, its main task is to create a current of water to attract fish going to spawn to the shipping locks . The inter-lock hydropower plant is operated by the Federal State Institution “Administration of the Volga-Don Basin of Inland Waterways” [1] .
| Inter-lock hydropower station | |
|---|---|
 Inter-lock hydropower plants and locks | |
| A country |  Russia |
| River | Volga |
| Cascade | Volga-Kama |
| Owner | Ministry of Transport of the Russian Federation |
| Status | acting |
| The year the construction began | 1959 |
| Years of input units | 1961 |
| Main characteristics | |
| Annual electricity production, mln kWh | 135 |
| Kind of power plant | derivational |
| Design head , m | 17 |
| Electric power, MW | 22 |
| Equipment specifications | |
| Type of turbines | rotary lobed |
| Number and brand of turbines | 2 × PL-30-V-330 |
| Flow through turbines, m³ / s | 2 × 80 |
| Number and brand of generators | 2 × VGS-525 / 84-32 |
| Power of generators, MW | 2 × 11 |
| Main facilities | |
| Dam type | uses the dam of the Volga hydroelectric station |
| Outdoor switchgear | 110 kV |
| On the map | |
Station Design
The inter-lock hydropower plant is a derivative power plant in design, and a dam in the pressure generation scheme. The installed capacity of the power plant is 22 MW , the design annual average power generation is 135 million kWh . Road and railway crossings have been laid along the HPP facilities. The inter-lock hydropower plant does not have its own retaining structures, using the pressure created by the Volzhskaya hydropower plant. The inter-lock hydropower plants are located between the chambers of the shipping locks of the Volgograd hydroelectric complex and include: [1]
- water intake in the form of two rectangular reinforced concrete pipes passing in the upper part of the middle abutments of the upper heads of locks;
- a supply channel in the form of a rectangular reinforced concrete boat 263.7 m long and 11 m wide. The canal is connected to the water intake by a two-point reinforced concrete pipe of rectangular section, 40 m long;
- building of hydroelectric power station of channel type;
- concreted outlet channel-tray of a trapezoidal section with a length of 271.7 m and a width of 9.2 m, ending with a spillway into the lower approach channel of the locks.
In the building of the hydroelectric station there are two vertical hydraulic units with a capacity of 11 MW each, equipped with PL-30-V-330 rotary vane turbines operating at a design pressure of 17 m. Hydroturbines drive the VGS-525 / 84-32 hydrogenerators. A feature of the hydroelectric building is its open design, the generators are covered with removable reinforced concrete caps. The water inlets of the hydroelectric power station building are equipped with flat emergency repair gates, the water spent on the turbines is discharged into a two-point reinforced concrete pipe 32 m long and then into the discharge channel-tray. Electricity from generators is transmitted through seven cable lines 185 m long to a transformer substation located on the left bank (to a TDG-31500/110 transformer), and from it via 110 kV overhead lines to the Zelenaya substation and further to the power system [1] [2] .
History of construction and operation
The initial project of the Volzhskaya (then Stalingrad) hydroelectric power station, approved in 1952, did not provide for the construction of the Inter-lock hydroelectric power station and fish passage facilities. In the technical design of the station, approved in 1956, the construction of a fish elevator was planned for the passage of fish going to spawn. In 1957, during observations at the Tsimlyanskaya Hydroelectric Power Station and the Ust-Manychsky Hydroelectric Complex, it was established that fish going to spawn at a certain speed of water flow enters navigable locks and, together with lock ships, passes into the reservoir. Given the important fishery importance of the Volga, it was decided to ensure the passage of fish through the Volgograd hydroelectric complex not only through the fish elevator, but also through shipping locks, both during ship locks and special fish locks. To do this, during the period of mass fish migration for spawning, to attract it to the locks, it was necessary to ensure a constant discharge of water into the lower approach channel of the locks. In 1958, for the beneficial energy use of the energy of this water, the Gidroproekt Institute developed the design assignment for the Inter-Lock Hydroelectric Power Station. By this time, the construction of locks was nearing completion, which naturally limited the layout options for the new hydroelectric power station. The station was built in a very short time, in 1959-1961 [1] .
As of 2018, the Inter-lock hydropower plant is operated by the Federal State Institution “Administration of the Volga-Don Basin of Inland Waterways”. The station equipment has worked for more than 50 years, work is underway to upgrade it, in particular, the generator excitation system has been replaced [1] .
Notes
- ↑ 1 2 3 4 5 Renewable energy. Hydroelectric Power Plants of Russia, 2018 , p. 188-189.
- ↑ Hydroelectric Power Plants of Russia, 1998 , p. 203-208.
Literature
- Butler M.I., Zhdanova A.P., Lushnikov O.G., Plum I.V. Renewable energy. Hydroelectric power stations of Russia. - SPb. : Publishing House of Peter the Great St. Petersburg Polytechnic University, 2018 .-- 224 p. - ISBN 978-5-7422-6139-1 .
- Plum I.V. History of hydropower in Russia. - M .: Branch of JSC RusHydro - KorUNG, 2014. - 304 p.
- Hydroelectric power stations of Russia. - M .: Printing house of the Institute Hydroproject, 1998. - 467 p.