ISPITIVANJA HIDRAULIČNIH I ENERGETSKIH KARAKTERISTIKA KAPLANOVIH TURBINA U HE OVČAR BANJA

Abstract

The hydraulic and power perfomance tests of the renovated Kaplan turbines at units A1 and A2 in HPP Ovcar Banja are performed in site for three different net heads. On the basis of measured propeller curves for constant runner blades openings the combinatory characteristics are determined and the combinatory links are defined too. The obtained characteristics are given in this paper. Special attention is given to the Winter-Kennedy discharge measurements by using the calibrated discharge coefficients. Discharge coefficients are, also, determined by the Index test. The values of obtained discharge coefficients by the Index test with calibrated discharge coefficients are compared. The used measurement procedures gave the best opportunity for the units optimal efficiency operations.