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Near real time data assimilation of numerical simulation model for Danube river from Novi Sad to Iron Gate I: Test results

Asimilacija računskog modela Dunava od Novog Sada do HE "Đerdap 1" u približno realnom vremenu - rezultati testiranja

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2017
818.pdf (912.4Kb)
Authors
Rosić, Nikola
Prodanović, Dušan
Stojanović, Boban
Obradović, Dragana
Article (Published version)
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Abstract
In this paper, a novel data assimilation method for operational reservoir management on the Danube river section between Novi Sad and Iron Gate I is presented. The proposed data assimilation method allows discharges of river flow simulation model to be updated in near real time according to results of continuous water surface levels measurements. The model discharges are adjusted according to difference between measured and calculated water surface elevations using so-called PI controllers at locations where water levels measurements take place. The effect of different number of PI controllers on method effectiveness and stability are studied for different scenarios. The recommendations for method improvement are given at the end of the paper.
U radu se predstavlja jedna od mogućih metoda asimilacije, korišćenja kontinualnih merenja nivoa vode duž Dunava za ažuriranje numeričkog modela tečenja Dunavom od Novog Sada do HE "Đerdap 1", napravljenog za potrebe HIS "Đerdap". Opisana metoda omogućava kontinualno, u realnom vremenu, usaglašavanje stanja računskog modela i stvarnog sistema, putem postepene korekcije nivoa promenom nepouzdanih dotoka u modelu. Korekcije se izračunavaju korišćenjem PI (eng. Proportional Integral) kontrolera koji su postavljeni na mestima gde postoje pouzdana merenja nivoa. U radu se prikazuju dobijeni rezultati testiranja primenjene metode za asimilaciju podataka pri različitim scenarijima promene protoka (odnosno, nepoznatog dotoka) na delu Dunava od Novog Sada do hidroelektrane "Đerdap". Testiranja su sprovedena sa različitim brojem kontrolera, kako bi se jasno video njihov efekat, stabilnost i efikasnost asimilacije. Na kraju rada se daju preporuke za dalja poboljšanja metodologije.
Keywords:
simulation model / Danube model / data assimilation / Iron Gate / simulacioni model / model tečenja Dunavom / asimilacija podataka / HIS Đerdap
Source:
Vodoprivreda, 2017, 49, 4-6, 253-261
Publisher:
  • Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
Projects:
  • Stvaranje hibrida kukuruza tolerantnih prema biotičkim i abiotičkim faktorima stresa (RS-20101)

ISSN: 0350-0519

[ Google Scholar ]
URI
http://grafar.grf.bg.ac.rs/handle/123456789/820
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за хидротехнику и водно-еколошко инжењерство
Institution
GraFar

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