摘要
针对现有参数率定方法在目标函数曲面上寻优存在率定结果不稳定、收敛性能差、效率低、找不到全局优值等问题,利用因变量增量与参数变化之间存在的系统响应关系构建了系统响应参数率定方法。采用邵武流域的实测资料和新安江模型对该方法进行了应用检验。结果表明系统响应参数率定方法可以找到参数全局优值,不受初值影响,率定结果稳定,效率较高。因此说明系统响应参数率定方法是一种可行有效的参数优选方法,对其他模型参数优选具有一定的借鉴意义。
The existing parameter calibration methods are based on the objective function surface to find the optimal value. This type of methods have problems such as unstable results,poor convergence performance,low efficiency and failure to find the global optimal value. Based on the system response relationship between the increment of the dependent variables and the increment of parameters,the system response parameter calibration method was proposed in this paper. Then the Xin An Jiang Model parameters based on Shaowu basin measured data were also calibrated by the method. The results showed that this new method can got the optimal parameter values not influenced by the different initial parameter values with higher convergence speed and accuracy. So the system response parameter calibration method is an effective parameters optimization method,which can be used as a reference for other model parameter optimization.
作者
赵丽平
邢西刚
吴楠
刘云
周艳先
ZHAO Liping;XING Xigang;WU Nan(China Institute of Water Resources and Hydropower Research,Beijing 100038;Research Center of Flood and Drought Disaster Reduction of the Ministry of Water Resources,Beijing 100038;General Institute of Water Resources and Hydropower Planning and Design,Ministry of Water Resources,Beijing 100120)
出处
《中国防汛抗旱》
2021年第10期21-25,共5页
China Flood & Drought Management
基金
国家重点研发计划项目(2018YFC1508003)
青年科学基金项目(51809281)。
关键词
新安江模型
系统响应参数优化方法
邵武流域
参数率定
Xin’an Jiang model
system response parameter optimization method
Shaowu Basin
parameter calibration
