| 长输水渠道前馈控制时间研究 |
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| 引用本文： | 崔巍,陈文学,穆祥鹏,郭晓晨.长输水渠道前馈控制时间研究[J].水利学报,2009,40(11). |
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| 作者姓名： | 崔巍 陈文学 穆祥鹏 郭晓晨 |
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| 作者单位： | 中国水利水电科学研究院,水力学研究所,北京,100038 |
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| 基金项目： | 国家科技支撑计划，中国水利水电科学研究院优秀青年科研专项项目 |
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| 摘 要： | 基于明渠非恒定渐变流理论，模拟分析了长输水渠道在不同边界条件下，闸门和分水口引发的沿程水位和流量的波动过程。模拟分析了不同闸门前馈控制时间对分水口处水位波动的影响，提出了有效降低水位波动的前馈控制时间及其计算方法。前馈控制时间根据移动波在上下游方向传播的速度计算得出。在南水北调中线京石段渠道上，应用蓄量补偿法进行了前馈控制仿真，分别使用了蓄量补偿法前馈控制时间计算公式和本文提出的前馈控制时间计算公式。计算结果表明，应用本文提出的前馈时间计算公式，能够有效降低渠道运行过程中分水口处的水位波动，达到更好的前馈控制效果。
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| 关 键 词： | 明渠输水工程 前馈控制 水波运动 南水北调中线京石段 |
Anticipation time estimation for feedforward control of long canal |
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| CUI Wei.Anticipation time estimation for feedforward control of long canal[J].Journal of Hydraulic Engineering,2009,40(11). |
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| Authors: | CUI Wei |
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| Affiliation: | China Institute of Water Resources and Hydropower Research, Beijing 100038, China |
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| Abstract: | Based on unsteady-flow theory, the fluctuatious process, water level and flow rate along a long canal system are simulated during the gate check and off-take structure operation. The influence of anticipation time for feedforward control on water level fluctuation near offtakes is analyzed. A new formula of the anticipation time is put forward based on wave speed, traveling in both upstream and downstream direction, in order to reduce water level variation. In Beijing-Shijiazhuang section of the Middle Route of the South-to-North Water Transfer Project, volume-compensation method is applied for feedforward control. Anticipation time is calculated by volume compensation formula and the new formula, respectively. Simulation results show that the new method leads to smaller water level deviation and better control performance. |
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| Keywords: | water transfer project feedforward control wave movement Beijing-Shijiazhuang section of Middle Route of the South-to-North Water Transfer Project |
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