水力发电2017，Vol.43Issue(12)：13-16,33,5.
基于LH-OAT与变异系数法的汇流模型参数敏感性分析
Analysis on Parameter Comprehensive Sensitivity Coefficient of Confluence Model Based on LH-OAT and Variation Coefficient
摘要
Abstract
In order to analyze the influence of confluence model parameters on flood simulation and improve the accuracy of model parameters,the Nash instantaneous unit line confluence model in Shanxi flood forecasting system is studied.Firstly,the parameters of confluence model are changed by LH-OAT method for analyzing the sensitivities of confluence model parameters in different levels of flood,different watersheds and different objective functions,and then the comprehensive sensitivity coefficient of confluence model parameters is determined based on the coefficient of variation.The results show that:(a) the sensitivity of Nashian instantaneous unit line confluence model is changed with the changes of flood level,basin characteristics and objective function,and the sensitivity of parameters is only related to objective functions of flood flow (Qmi) and flood peak error (PE) and is independent to other objective functions;and (b) the comprehensive sensitivity coefficients of parameter C1 and C2 are 0.58 and 0.42 respectively,they are all sensitive parameters and the sensitivity of C2 is greater than that of C1.关键词
汇流模型/LH-OAT/变异系数法/敏感性分析Key words
confluence model/LH-OAT/coefficient of variation/sensitivity analysis分类
建筑与水利引用本文复制引用
李昂,祝雪萍,武鹏林..基于LH-OAT与变异系数法的汇流模型参数敏感性分析[J].水力发电,2017,43(12):13-16,33,5.基金项目
国家自然科学基金项目(51509176) （51509176）
山西省自然科学基金项目(201601D021086,2016011054) （201601D021086,2016011054）
