In-Situ Measuring Campaign at the Hydropower Plant ‘‘Perućica’’, Montenegro - Part 1: Open Channel System - Page 9

 

Measurements in steady boundary conditions

The measuring was performed for six different scenarios which included, for the most part, the testing of high discharges.

This was partly caused by the hydrological conditions – heavy precipitation had resulted in large run-off, and discharges of the Zeta River were unexpectedly increased, so the HPP had to operate on high capacity in order to avoid excessive water losses. The second reason was the argument that the system behavior during low discharges was properly analyzed through measurements in unsteady boundary conditions.

Since the boundary conditions were steady, less time was needed for the measuring, and each scenario lasted two hours.

In Table 6, the scenarios from this group are presented, together with the planned operating conditions of the HPP.

The results of the S5 scenario are presented in Figures 22-26, as a typical example of these measurements.

Figure 22 shows a steady flow in the Zeta River during the entire scenario. The water level changes were around 1 cm, indicating that the discharge was steady.

 

Table 6: List of different operational scenarios in steady boundary conditions

Table6

 

22

Figure 22: Water level in the Zeta River at Duklov Bridge on 24 June 2010

 

The same conclusion could be drawn for the Zeta I Canal downstream of the Vrtac Dam (Figure 23).

 

23

Figure 23: Water level in the Zeta 1 Canal (downstream of the Vrtac Reservoir) on 24 June 2010