摘要
为了研究渠道运行控制中渠系建筑物的前馈控制时间,综合考虑上游调控及分水口调控对下游水量的影响,采用水量恒定方法,构建了渠道前馈控制时间计算模型,并将模型应用于山西省夹马口灌区.结果表明:模型所采用的流量拟合方程及参数对流量的拟合精度较高,能够有效表达下游流量在渠道调控下的变化情况,当采用该模型计算的调控时间进行控制时,可以基本保证流向下游的总水量恒定,水量偏差为0.8 m^3.利用模型进一步分析了不同流量下的调控时间,发现随着流量的增大,分水口最优调控时间逐渐减小,在此基础上得到了流量-前馈控制时间、水深-前馈控制时间的线性拟合公式,为提高夹马口灌区渠道运行控制水平提供了简单合理的计算方法.
In order to study feedforward control time of canal buildings during canal operation, influences of upstream and outlet regulations on downstream water volume were considered. A constant water volume method was used to establish a canal feedforward control time computational model, and the model was applied to Jiamakou Irrigation District in Shanxi Province.The results show that the flow rate fitting equations and parameters used in the model have high accuracy, and can effectively express the changes in downstream flow rate under the regulation of the canal.When the control time calculated by the model is used to control the canal, the total volume of water flowing downstream is roughly kept constant with a deviation of 0.8 m^ 3 only.The model is used to further analyze the regulation time at different flow rates. It is showed that the optimal outlet regulation time decreases gradually with increasing flow rate.On this basis, the linear fitting formulas of flow rate and depth in terms of feedforward control time are obtained, which provide a simple and reasonable calculation method for the operation control of Jiamakou Irrigation District.
作者
樊玉苗
高占义
陈皓锐
王少丽
常辉
FAN Yumiao;GAO Zhanyi;CHEN Haorui;WANG Shaoli;CHANG Hui(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China;Jiamakou Irrigation District Administration Bureau,Yuncheng,Shanxi 044031,China)
出处
《排灌机械工程学报》
EI
CSCD
北大核心
2018年第11期1131-1136,共6页
Journal of Drainage and Irrigation Machinery Engineering
基金
"十三五"国家重点研发计划项目(2017YFC0403205
2017YFC0403302
2017YFC0403503
2016YFC0501301)
中国水利水电科学研究院领军人才项目(GG0145B502017)
国家自然科学基金资助项目(51779273
51779274)
关键词
夹马口灌区
渠道运行
前馈控制
水量恒定
拟合方程
Jiamakou Irrigation District
canal operation
feedforward control
constant water volume
fitting equation
