Water works Lipno is on the upper reaches of the Vltava River.It built for production of electrical energie. Lipno is the first stage of the Vltava cascade. This water reservoir is the largest lake in the Czech Republic.
1951 Final decision of construction of water works
1952 Beginning the construction of dams Lipno
1955 Start digging underground caverns
1956 Finish excavating waste tunnel
1957 Completion of the dam and underground caverns
1958 Start filling the water reservoir Lipno
1959 Hydroelectric put into operation
1960 Completion of all work
1981,1982 Overhaul sets
1998,2000 Replacement of ball valves
1999 Small water power plants Lipno put into operation
The beginning construction dam was in 1952. Hight of dam is 25,8 m ,width is 10 m. Length of dam in the crown is 296 m.At the end of 1957 the dam completed.
There are two crown weirs on the dam. Their width is 10 m and a total capacity 148,4 m3/s. Another outlet devices are two bottom outles with a diameter of 2,5 meters with a total capacity of 172,2 m3/s.
Area Water reservoir Lipno is 4 870 ha and capacity is 309 502 000 m 3. Length of water reservoir is 48 km from the dam and maximum of with is 10 km. The water reservoir
Vodní nádrž Lipno zabírá ploch 4 870 ha o objemu 309,502 mil.m3.Vzdutí nádrže sahá 48 km a max.šířka je 10 km.The water reservoir started meet with water at March 1958.
But it would be a shame not use large gradient between Lipno and Vyšší Brod .
that's why they invented , that cavern will be deep underground.
They began excavate the cavern the first January 1956. Length of cavern to engine room is 65 meters,height is 37 meters and width is 22 meters. The workers mined 83 000 m3 of rock in two years of work.
The first turbine of type francis installed August 1958. The second turbine installed September 1958. First turbine first spun 15th July 1959 and second turbine spun 7th December 1959.
Two Francis's turbines reach total capacity 120 MW.
Turbine made of steel (86%) with the addition of chromium (13%) and nickel (1%) in factory ČKD Blansko. Diameter of turbine is 1,18 m,height is 1 m and it weighs 7 t.[Photo]
Two pusher shaft bring water on the turbine,it diameter is 4,5 m,that it taper on 2,5 m. One shaft bring even 46 m3/s.
Water from the turbine drains 3,535 km long waste tunnel to the buffer reservoir Lipno II. Workers began build the tunnel 13th May 1952. Width of waste tunnel is 8,4 m and height is 7,5 m.
Small Water power plant began work at 1999, power plant is in the dam and it installed capacity is 300 kW.
One Francis turbine uses redevelopment flow 1,89 m3/s.