Application of PSO algorithm and DDS algorithm to parameter calibration of EasyDHM model

LU Si-cheng , LIAO Wei-hong , LEI Xiao-hui , YIN Zhao-kai , WANG Hao

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China Rural Water and Hydropower ›› 2018 ›› (10) : 47-53.

Application of PSO algorithm and DDS algorithm to parameter calibration of EasyDHM model

  • LU Si-cheng1 ,LIAO Wei-hong2 ,LEI Xiao-hui 2 ,YIN Zhao-kai 3 ,WANG Hao2
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Abstract

In order to improve the accuracy of EasyDHM model for hydrological forecast,based on hydrologic data from 2012-2014 of the Hanjiang River Basin , PSO algorithm and DDS algorithm are used to calibrate the parameters of EasyDHM model. Parameters influences on the performance and results of two algorithms are analyzed to obtain the optimum parameters of two algorithms in calibrating the EasyDHM model.Based on that,the results of parameter calibration of two algorithms using optimum parameters was compared. the results show that the two algorithms both shown good applicability in parameter calibration of EasyDHM model of this basin and based on the comparison results ,give the suggestion of selecting algorithm when carry out hydrological forecast of floods using EasyDHM model: In the case of requiring best results of calibration,suggest using DDS algorithm when the main index of the hydrological forecast is the flood volume and using PSO algorithm when the main index of hydrological forecast is the flood peak.In the case of requiring fast calculation speed ,suggest using DDS algorithm.

Key words

PSO algorithm / DDS algorithm / EasyDHM model / Hanjiang River Basin / parameter optimization

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LU Si-cheng , LIAO Wei-hong , LEI Xiao-hui , YIN Zhao-kai , WANG Hao. Application of PSO algorithm and DDS algorithm to parameter calibration of EasyDHM model. China Rural Water and Hydropower. 2018, 0(10): 47-53

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