1 Turbine (runner)
A component of a hydropower unit located in the HPP dam structure. Water turns the turbine runner blades, generating mechanical energy.
A component of a hydropower unit connected to the turbine by a shaft. The generator converts mechanical into electrical energy.
Its function is to increase the voltage, so that the electricity generated by the hydropower units can be transferred to the transmission grid.
4 Machine hall bridge crane
Is used for moving the hydropower unit components during the assembly and dismantling of hydropower units.
5 Machine hall
The hall where the hydropower units and their auxiliary equipment are located.
6 Upstream gantry crane
Is used for lifting and lowering the gates for the purposes of closing the penstock as well as removing debris from the trash racks.
7 Turbine inlet trash rack
Its function is to prevent all kinds of floating objects from getting into the penstock.
8 Downstream gantry crane
Is used for lifting and lowering the downstream gates, draining or flooding the draft tube.
9 Motor road tunnel
Is used for road traffic across the Daugava river.
10 Water spillway gate
Its function is to spill flood water over the spillway.
11 Upstream and downstream gates
Are used for closing the waterways and draining the inlet pipe during the maintenance or repair of the hydropower unit turbine.
Facts about Plavinas HPP
- Technical data
- Largest power plant in Latvia
- Provides backup power to the Baltic region
- Second largest HPP in the European Union
- Unique structure of the HPP
- Crane with the largest lifting capacity in Latvia
- Aizkraukle – HPP workers settlement
- Biggest fish caught in Latvia
- HPP construction site immortalized in a film
- Aizkraukle, 107 km from the Daugava River mouth.
- Plavinas HPP was constructed in a very short period of time (5 years) and put into operation in 1965
- The hydropower plant is equipped with 10 hydropower units
- The maximum head of the HPP is 40 metres
- The installed capacity after reconstruction is 893.5 MW
- The average annual output is about 25 % to 30% of all electric power generated in Latvia
- Plavinas HPP plays a vital role in Latvian electric power system. In the Baltic context, it is essential for ensuring the stability of the power system, since it serves as a backup for the entire Baltic power system in case of emergency, such as unscheduled power cuts or failures at baseload plants.
- In terms of the installed capacity, Plavinas HPP currently is the largest hydropower plant in the Baltic States and the second largest in the European Union.
- Although any hydropower plant has a unique structure, Plavinas HPP is significantly different from similar power plants: it is very compact, with its spillways and water production facilities combined into a single unit, where a tunnel for road transport has been built – the only one of its kind in Latvia. In construction of Plavinas HPP, it was shown for the first time that it is possible to build a medium-head hydropower plant on soft ground.
- Aizkraukle is the newest town in Latvia. It was built in the 1960s as a village for the builders of the nearby Plavinas HPP. Aizkraukle acquired the status of a town in 1967. Up until 1990, it was actually called Stucka and then renamed to Aizkraukle.
- On the Street of Tomorrow is a drama filmed by Mosfilm studio on the HPP construction site in 1965, which features the construction of some HPP in Russia.
- The lifting capacity of the largest overhead crane in the turbine room is 250 t, it is the biggest in Latvia.
- A catfish weighing a whooping 84.7 kg was caught in the Daugava River not far from Plavinas HPP. To date, this has been the biggest fish ever caught in Latvia.