Zaramagskaya HPP in North Ossetia
• Zaramagskaya HPP in North Ossetia
The three-day trip to North Ossetia was intense, we saw four completely different hydroelectric power station: a very old and very new, very large (in the near future) in the North Caucasus, and very small, with the dam and without operating and under construction, and even private!
Go inside the HPP was my old dream, the most interesting object that deserves a separate post, I believe Zaramagskaya HPP.
The complex Zaramagskaya HPP is very complex and is divided into two interconnected stations - performance of the head HPS-1. After completion of construction, which has been going on for more than thirty years, Zaramagskaya HPP will be the largest hydroelectric power plant in the North Caucasus, and will have the highest pressure of the water among the hydro power plants in Russia - 630 m.
The head 15 MW Zaramagskaya HPP put into operation in 2009. Located on the Ardon River, near the gorge Kassarskogo depth of 1000 meters. The river in this area has a very large drop.
Ardon River blocked by earth dams. The maximum height of the dam 39 m, length - 300 m. On one side of the river hydroelectric power station building is located, to which special tunnel water is supplied. On the other bank of the river there is another tunnel - construction and service spillway. Therethrough in strong excess water floods reset. Headache HPP is designed to generate electricity water pressure created by the dam. Panorama headend Zaramagskaya HPP
The view from the dam to the downstream
View from the headend platform on the 110 kV switchgear
This gantry crane is used for lifting and lowering the shutter
Match to the building of hydroelectric power station
A fragment of the central control station
The machine room: machine hall length - 24 m, width - 23, 7 m
The power house is running one of a four Kaplan turbines with turbine disk shutter driving the hydro generator. The diameter of the impeller hydroturbine - 3, 5 m, impeller weight - about 30 tons.
hydraulic turbine generator
thrust bearing generator
The valve cone, overlapping the access of water in hydroelectric tunnel
Unfortunately, I do not remember this purpose psychedelic room
headend Constructions complex will provide a diversion water intake tract Zaramagskaya HPP-1 formed from a dam reservoir complex. In this head, formed by a dam, is used for additional power production in HPP head. When combined with Zaramagskaya HPP-1 hydroelectric power head is reduced to 10 MW.
gorge Area avalanche danger, once the snow from the slopes in nucleation areas such guns avalanches knock
We leave the construction site Zaramagskaya HPP-1. The uniqueness of the HPP cascade Zaramag is that the river Ardon for 16 kilometers after leaving Tualskoy basin creates a vertical drop of over 700 meters. These are ideal conditions for plants cascade of derivation scheme - Head and HPP-1. The first is to use the created dam water pressure, quenching it, and supplying water to the pressureless derivational tunnel. Then the water of the pool daily regulation will be supplied to the turbine bucket Zaramagskaya HPP-1. The planned project capacity Zaramagskaya HPP-1 is 342 MW.
Construction of the pool daily regulation capacity of up to 270 thousand. M³ water
daily regulation pool intended for accumulation of water before it is fed hydro turbine. Idle spillway equipped with a capacity of 65 m³ / s in the event of failure of gates on the head node.
From IWU water on the composite pipe internal diameter 4, 4 meters and a length of 602 meters will go to the vertical 508 meters deep mine shaft and two a tunnel conduits with a diameter of 2, 5 meters and a length of about one kilometer each supplied to two vertical Pelton turbines Voith Siemens. The turbines will operate at a record for Russian hydropower plant pressure, as will be the largest turbine Pelton turbines at Russian hydroelectric power station and one of the largest in the world. A fragment of the future regulation of the daily pool
Construction of daily regulation pool
Open a composite pipe
The pipe is suitable to a vertical shaft
At this time the works on the sinking of a vertical mine shaft depth of 508 meters
There is building HPP-1 with a length of engine room 42, 7 m and a width of 32 m 2
Let's go into the tunnel leading from the mine shaft to the turbines of the future HPP
The tunnel conduit
This fork is called "trousers", here the water from the mine at odds for two conduits
Some more photos from the construction site:
In order to bring a better understanding of the scheme Zaramagskaya cascade from wikipedia (left south, north to the right)
Exit Zaramag cascade hydropower plants on a designed capacity will significantly reduce the power shortage in North Ossetia, and significantly improve the financial climate in the country.