Liapootah Power Station
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The Liapootah Power Station is a run-of-the-river
hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
power station A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid. Many p ...
located in the Central Highlands region of
Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...
, Australia. The power station is situated on the Lower River Derwent catchment and is owned and operated by
Hydro Tasmania Hydro Tasmania, known for most of its history as the Hydro-Electric Commission (HEC) or The Hydro, is the trading name of the Hydro-Electric Corporation, a Tasmanian Government business enterprise which is the predominant electricity generator i ...
.


Technical details

Part of the Derwent scheme that comprises eleven hydroelectric power stations, the Liapootah Power Station is the first power station in the lower run-of-river system. The power station is located above ground, below Lake Liapootah. Water from the Derwent below the
Tarraleah Tarraleah is a rural locality in the local government area (LGA) of Central Highlands in the Central LGA region of Tasmania. The locality is about north-west of the town of Hamilton. The 2016 census has a population of nil for the state subu ...
and Tungatinah Power Station is diverted through a concrete lined tunnel. Lake Liapootah is very narrow and is considered a run of river storage. During high inflow events the pond level can threaten the Tarraleah Power Station upstream. The drum gate is designed to lower automatically and maintain a maximum pond level below the flood level of Tarraleah station. Having the drum gate installed maximises the head at Liapootah station. The alternative to this would have been to build the dam at a lower level, thus reducing the available output from Liapootah station. The power station was commissioned in 1960 by the Hydro Electric Corporation (TAS) and the station has three
English Electric N.ยบ UIC: 9094 110 1449-3 (Takargo Rail) The English Electric Company Limited (EE) was a British industrial manufacturer formed after the Armistice of 11 November 1918, armistice of World War I by amalgamating five businesses which, during th ...
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turbines, with a combined generating capacity of of electricity. Within the station building, each turbine has a fully embedded spiral casing and water flow is controlled by a spherical rotary main inlet valve and a turbine relief valve designed to prevent spiral casing overpressure. The station output, estimated to be annually, is fed to TasNetworks' transmission grid via three banks of 11 k V/220 kV three-phase English Electric generator transformers to the outdoor switchyard.


See also

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List of power stations in Tasmania This is a list of active power stations in Tasmania, Australia. Candidates for this list must already be commissioned and capable of generating or more of electricity. Gas Thermal gas These power stations use gas combustion to power steam ...


References


External links

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Hydro Tasmania Hydro Tasmania, known for most of its history as the Hydro-Electric Commission (HEC) or The Hydro, is the trading name of the Hydro-Electric Corporation, a Tasmanian Government business enterprise which is the predominant electricity generator i ...
page o
the Derwent hydropower scheme
Energy infrastructure completed in 1960 Hydroelectric power stations in Tasmania Central Highlands (Tasmania) Run-of-the-river power stations {{CentralHighlandsTAS-geo-stub