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Automatic calibration method for hydrological model parameters in data area

A hydrological model and parameter technology, applied in the direction of genetic model, genetic law, electrical and digital data processing, etc., can solve the problems of low efficiency, high complexity, and unfavorable application and promotion of hydrological models.

Pending Publication Date: 2020-11-10
GUIZHOU EAST CENTURY SCI TECH CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for automatic calibration of hydrological model parameters in areas with data, so as to solve the problem that the traditional trial and error method is adopted in the prior art for the determination of hydrological model parameters of watersheds with data, that is, the hydrological model is continuously adjusted manually. In order to meet the simulation accuracy requirements, this method has human subjectivity, work repeatability, low efficiency and high complexity, and technical problems such as the application and promotion of hydrological models are not used.

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  • Automatic calibration method for hydrological model parameters in data area

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Embodiment Construction

[0026] A method for automatically calibrating parameters of a hydrological model in an area with data, comprising:

[0027] Step 1. Select the hydrological model parameters to be calibrated;

[0028] The method for selecting the hydrological model parameters to be calibrated is as follows: determining the hydrological model parameters to be calibrated according to the sensitivity of the hydrological model parameters.

[0029] The hydrological model parameters that need to be calibrated are shown in Table 1:

[0030] Table 1

[0031]

[0032]

[0033] Implement as follows:

[0034] 1) Establish an initial population, set SN individuals for each group, and set AN chromosomes for each individual, wherein each chromosome corresponds to the corresponding hydrological model parameters on the sub-watershed, and the value of the initial chromosome is randomly generated within the corresponding parameter range;

[0035] 2) The population update strategy is:

[0036] ·Sort the...

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Abstract

The invention discloses an automatic calibration method for hydrological model parameters in a data area. The automatic calibration method comprises the following steps: step 1, selecting hydrologicalmodel parameters needing to be calibrated; and step 2, adopting an artificial intelligence genetic algorithm to automatically calibrate hydrological model parameters needing to be calibrated in a data area. The technical problems that in the prior art, a traditional trial and error method is adopted for determining parameters of a hydrological model of a watershed with data, that is, parameter values of the hydrological model are continuously adjusted manually to meet the requirement for simulation precision, and the method is subjective, low in work repeatability, low in efficiency, extremely high in complexity, not beneficial to application and popularization of the hydrological model and the like are solved.

Description

technical field [0001] The invention belongs to hydrological parameter calibration technology, in particular to an automatic calibration method for hydrological model parameters in areas with data. Background technique [0002] The watershed hydrological process system is time-varying and uncertain, which determines that the parameters of the hydrological model have the same uncertainty and time-varying characteristics. Especially when the underlying surface conditions of the watershed change, in order to obtain more accurate forecast results, it is necessary to periodically Or make calibration corrections to the model parameters from time to time; the parameter setting of the hydrological model model is very important to the accuracy of the hydrological model simulation. In the existing technology for the specific application of watersheds with data, the parameter calibration of the hydrological model generally adopts the traditional trial-and-error method, that is, the par...

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Application Information

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IPC IPC(8): G06F30/20G06F30/27G06N3/12G06F113/08
CPCG06F30/20G06F30/27G06N3/126G06F2113/08Y02A10/40
Inventor 李胜张荣刘晟一田彪丁交亮罗国鹏张劲宋超
Owner GUIZHOU EAST CENTURY SCI TECH CO LTD
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