20.500.12556/DKUM-92479 Theoretical and experimental investigations of a water hammer in Sava river Kaplan turbine hydropower plants Teoretične in eksperimentalne raziskave vodnega udara v hidroelektrnah s Kaplanovimi turbinami na reki Savi This paper deals with critical flow regimes that may induce an unacceptable water hammer in the Sava River Kaplan turbine hydropower plants. The rigid water hammer model is introduced first. The computational results are then compared with the results of measurements in two distinct hydropower plants (HPP): (i) The refurbished and upgraded Medvode HPP, and (ii) The newest Brežice HPP. Comparisons of the computed and measured results are examined for normal operating regimes. The water hammer in the two power plants is controlled by appropriate adjustment of the wicket gates and runner blades closing/opening manoeuvres. The agreement between the computed and measured results is reasonable. Prispevek obravnava kritične pretočne režime, ki lahko povzročijo nesprejemljiv vodni udar v hidroelektrarnah s Kaplanovo turbino na reki Savi. Najprej je predstavljen model togega vodnega udara. Računske rezultate nato primerjamo z rezultati meritev v dveh značilnih hidroelektrarnah (HE): (i) prenovljeni in nadgrajeni HE Medvode ter (ii) najnovejši HE Brežice. Primerjave izračunanih in izmerjenih rezultatov so podane za normalne režime obratovanja. Vodni udar v obeh elektrarnah je krmiljen z ustrezno nastavitvijo manevrov zapiranja oziroma odpiranja vodilnih in gonilnih lopatic turbine. Ujemanje med izračunanimi in izmerjenimi rezultati je dobro. hydropower plant Kaplan turbine Sava River water hammer validation hidroelektrarna Kaplanova turbina reka Sava vodni udar validacija true false true Fakulteta za energetiko Angleški jezik Slovenski jezik Sava (vodotok) © Fakulteta za Energetiko Znanstveno delo 2025-04-11 08:51:41 2025-04-11 09:07:26 2025-04-12 03:10:24 0000-00-00 00:00:00 2024 0 0 Str. 11-20 št. 4 Letn. 17 dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-01 621.311.21 228216579 1855-5748 Bergant_2024_Theoretical_andexperimental_investigations.pdf Bergant_2024_Theoretical_andexperimental_investigations.pdf 1 B005F6C93B44666BAADA551872CBCAE7 67e3bfd8f38e49765ca042f43f9ef09f76ba49e8e28ea2c6144f0599ec7d8436 46dd035f-16a3-11f0-983e-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=190217 https://www.fe.um.si/e-jet/5855-december-2024.html 0 8802c0db-16a3-11f0-983e-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=190218 Fakulteta za energetiko 0 0 0