“With the advantage of daily storage, two equal capacity Francis type turbines are used”
Project Information
Client: Kayı Construction
Location: Erzurum
Status: Completed
Key Features
Diversion Type
Installed Capacity 12 MW
Hard Climate Conditions
Forebay With Pondage
Five Diversion Weirs
Long Siphons
Summary
Kaletepe HEPP is a diversion type hydroelectric power facility collecting water from five different branches via its tyrolean weirs at the high elevations of Ziyaret and Yagcilar Streams. Kaletepe HEPP which started to commercial activity in 2009, is characterized with five weirs, a long conveyance channel, a forebay large enough to meet daily regulating demand, a long penstock and severe weather conditions in the vicinity.
Kaletepe Headpond with Pondage
Conveyance line and the penstock were constructed below freezing depth in order to avoid freezing damages which can be caused by the stopping of the daily regulated production. 11,154 m long conveyance channel consists of U-PVC pipe having different diameters varying from 0.80 m to 1.60 m and three siphons with 195 m, 825 m and 390 m lengths. Conveyance line and the penstock were constructed below freezing depth in order to avoid freezing damages which can be caused by the stopping of the daily regulated production. Since it is not practical to construct each weir with its own storage, a forebay with a storage of 30,000 m3 is designed and constructed to supply daily regulation. In this manner, the loss in energy production due to flows below the minimum turbine discharge is eliminated and the maximum energy production is increased. With the advantage of daily storage, two equal capacity Francis type turbines are used.