Waitaki

Waitaki

Waitaki Power Station is located on the Waitaki River on the South Island of New Zealand. The station includes seven low head Francis runners with a total output of 105 MW. The annual power output for the station is 450-550 GWh. The Waitaki Power Station is the oldest station of a group of eight hydropower facilities in the region that contribute over 6.5 TWh per year. The seven runners at this facility were designed and installed between 1935 and 1954 and are therefore in great need of refurbishment.

From January to April 2011, a model scale version of the prototype turbines at units 5, 6, and 7 were tested at LMH on Test Rig 2. The purpose of the model tests was to measure the baseline characteristics of the prototype runners to aid in the upgraded design of units 5 and 7.

 

Prototype characteristics

Head = 21.3 m
Rotation speed = 125 rpm
Runner diameter = 4 m
Power = 17.2 MW
Scale model ratio = 10
Commissioned = 1949 (unit 5)
& 1954 (units 6, 7)