Seite - 405 - in Book of Full Papers - Symposium Hydro Engineering

In these conditions the technique things that happen are: - When lake water level is high, the outflow is controlled by regulating gates. - When lake water level is low, the outflow is adapted to the cross section of the lake. - regulating gates will be functioned as a regulator discharge output after passing the peak of the rainy season, so the water reservoir can be utilized as an energy generator with a longer duration. - The condition of lake water level before the peak of rainy season should be restored as a natural condition for giving the sufficient storage when large discharge into the lake and prevent the overflow above the secure elevation as social impact. b) Scheme of Operation Selection of the operating rule is done by making some alternative operating scheme. Alternative schemes operating pattern plan that is chosen is the scheme 2 of the various alternatives available in Table 3, Figures 6 and 7. Table 3. Comparison of Daily Averages for Operations Plan Deskripsi Skema-1 Skema- 2 Skema- 3 Skema-4 Skema-5 Plant discharge capacity (m3/sec) 160 160 40 5 512.84 511.7 507 425.0 136.5 288.5 65.78% 160 93 40 5 512. 84 511.7 507 403.9 317.3 86.6 62.51% 160 103 40 5 512. 84 511.7 507 410.2 341.4 68.8 63.48% 160 108 110 5 512. 84 512.02 507 408.7 364.1 44.6 63.25% 160 113 113 5 512. 84 512.27 507 413.1 376.5 36.6 63.94% Daily rated discharge (m3/sec) Minimum operating discharge (m3/sec) Duty flow (m3/sec) F.W.L (m) untuk Q100 H.W.L (m) M.O.L (m) Generated Energy (GWH/year) Primary energy (GWH/year) Secondary energy (GWH/year) Capacity Factor 405