Possibility theory in hydrology and water management

Nacházel, Karel; Fošumpaur, Pavel

doi:10.2478/v10098-010-0008-y

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…The function that describes a HTC problem has a complicated shape of the surface and many local extremes. When solving simpler problems, numerical methods show a high degree of efficiency, but they often tend to have difficulty solving complex problems and can encounter a so-called 'curse of the size of the problem' [4]. For complex problems, similar to HTC, which is marked as a large-scale problem, it is better and more suitable to use heuristic methods.…”

Section: Introductionmentioning

confidence: 99%

Impact of differential evolution parameters on optimization of hydro-thermal coordination

Šulek

Kinczer

2019

Pollack Periodica

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Nowadays heuristic methods are one of the most used tools for the optimization of problems. The proof of that is the fact that they are widely used in chemistry, economics and energy. Among the most popular of heuristic methods belongs differential evolution, belonging to the so-called 'evolutionary algorithms'. They can handle difficult, large-scale problems with many parameters, like the optimization of the hydro-thermal coordination of hydro and thermal power plants. As with any other method, differential evolution also has certain parameters. These parameters, among others, are the size of the population, the maximum number of generations, crossover parameter and mutation factor. The effect of these parameters on the results of an optimization using differential evolution is the focus of this paper. The hydro-thermal coordination of one hydro and one thermal power plant was used as an example to explain this issue.

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Section: Introductionmentioning

confidence: 99%

Impact of differential evolution parameters on optimization of hydro-thermal coordination

Šulek

Kinczer

2019

Pollack Periodica

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“…The MRF below reservoirs is determined on the basis of the water management solution to the water reservoir. The reason for this solution was the clear need to ensure the reliability of storage spaces in reservoirs, especially with regard to ongoing climate change [24], 2.…”

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confidence: 99%

Minimum Residual Flows for Catchments in the Czech Republic

Balvín

Vizina

Nesládková

et al. 2021

Water

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The determination of minimum residual flow (MRF) follows diverse methodology in Europe due to differing hydrological conditions, ecosystem requirements, water abstraction requirements, and legislation. Methodologies in individual countries are difficult to compare qualitatively. However, individual approaches can serve as examples for countries undergoing the process of developing new methodologies, either for legislative purposes or to improve environmental standards on watercourses. This is exactly the situation in the Czech Republic which, has been working on the Regulation of the Government of the Czech Republic for ten years, since the amendment to the Water Act in 2010, defines the methods and criteria for determining the MRF on watercourses. T.G. Masaryk Water Research Institute, p.r.i., was commissioned to develop a new methodology to serve as the basis for the wording of aforementioned regulation. The new methodological approach took into account modern trends concerning the preservation of ecological standards, and used standard hydrological characteristics for its calculations. The newly proposed approach is undergoing a complicated approval process as the authors seek to increase the MRF compared to the current approach. The new approach assumes an MRF setting between Q97 and Q90. It defines four areas within the Czech Republic, by their hydrological and hydrogeological conditions, where the MRF is determined in different ways. This article describes the development of a new methodological approach, including the use the available Czech Hydrometeorological Institute data sets, the proposed regional division for MRF calculations, the determination the MRF below reservoirs, and the current state of the issue.

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Unravelling seasonal dynamics: Inter-station correlations and hydrological assessments of Topľa river in the Bardejov basin

Almikaeel,

Cubanova

2024

E3S Web of Conf.

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The study delves into the complex seasonal dynamics of water levels in the Topl'a River, strategically positioned within the Bardejov basin. Hydrological assessments, aided by the water-bearing coefficient, classify the hydrological situation into Wet, Normal, or Dry conditions, creating a robust framework for clustering water levels across different years. The measurement stations, strategically located in Bardejovská Dlhá Lúka (stream Kamenec), Bardejov (river Topľa), Kľušovská Zábava (stream Šibská voda), and Gerlachov (river Topľa), contribute unique insights. Notably, Gerlachov and Bardejov represent different locations of the same stream, while Šibská voda and Kamenec are spatially proximate to Bardejov, experiencing similar meteorological conditions. Results from statistical analyses showcase distinctive seasonality patterns at each location and how the correlation between these stations evolves across different hydrological conditions. Intriguingly, the findings reveal an insignificant spatial relationship of correlation between station locations and seasonality, challenging conventional expectations. The implications of these results for water management and resources are discussed, emphasizing the need for a nuanced understanding of seasonality dynamics in optimizing water resource planning.

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Possibility theory in hydrology and water management

Cited by 4 publications

References 14 publications

Impact of differential evolution parameters on optimization of hydro-thermal coordination

Impact of differential evolution parameters on optimization of hydro-thermal coordination

Minimum Residual Flows for Catchments in the Czech Republic

Unravelling seasonal dynamics: Inter-station correlations and hydrological assessments of Topľa river in the Bardejov basin

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