In-Situ Measuring Campaign at the Hydropower Plant ‘‘Perućica’’, Montenegro - Part 1: Open Channel System - page 8


Figure 17: Water level in the Opačica Canal on 17 June 2010


Between the Vrtac Dam and the power intake, a steady flow state could not be reached (Figures 18-21). There were no periods of constant water level, especially in the second and the third phase of the scenario. The compensation basin, due to its volume, reduces these water level changes, but cannot eliminate them. Since a steady state was not achieved, the discharge measured in the Zeta I canal (Table 5) could be used only as a control value, but could not be taken as a relevant boundary condition. However, this downstream boundary condition was determined by the HPP discharge, which was measured in the pressurized system. This measurement will be analyzed in the next paper. In conclusion, these measurements provided periods of an unsteady state of flow (especially in the second and third phase), which are appropriate for a mathematical model calibration.



Figure 18: Water level in the Zeta 1 Canal (downstream of the Vrtac Reservoir) on 17 June 2010



Figure 19: Water level in the Zeta 1 Canal (upstream of the Compensation Basin) on 17 June 2010



Figure 20: Compensation Basin (Water level) on 17 June 2010



Figure 21: Water level at the Power Intake before the Trash Rack on 17 June 2010