|
|
Study on canal feedforward control time based on constant water volume |
FAN Yumiao 1,2, GAO Zhanyi1*, CHEN Haorui1, WANG Shaoli1, CHANG Hui3 |
1.China Institute of Water Resources and Hydropower Research, Beijing 100038, China; 2.College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; 3.Jiamakou Irrigation District Administration Bureau, Yuncheng, Shanxi 044031, China |
|
|
Abstract 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 showed that the flow rate fitting equations and parameters used in the model had high accuracy, and could 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 m3only.The model was used to further analyze the regulation time at different flow rates. It was showed that the optimal outlet regulation time was decreased gradually with increasing flow rate.On this basis, the linear fitting formulas of flow rate and depth in terms of feedforward control time were obtained. They provide a reference for the operation control of Jiamakou Irrigation District.
|
Received: 25 April 2018
|
|
|
|
[1]崔巍, 陈文学, 姚雄,等. 大型输水明渠运行控制模式研究[J]. 南水北调与水利科技, 2009, 7(5):6-10. CUI Wei, CHEN Wenxue, YAO Xiong, et al. Research on canal control of large scale water transfer project[J]. South-to-North Water Transfers and water science & technology, 2009, 7(5):6-10.(in Chinese)[2]丁志良, 王长德, 谈广鸣,等. 渠系蓄量补偿下游常水位运行方式研究[J]. 应用基础与工程科学学报, 2011, 19(5):700-711. DING Zhiliang, WANG Changde, TAN Guangming, et al. Study on constant downstream depth operation method of canal system based on volume compensation principles[J]. Journal of basic science and engineering, 2011, 19(5):700-711.(in Chinese)[3]钟锞,管光华,廖文俊,等. 基于渠池蓄量平衡的闸前变目标水位算法[J]. 排灌机械工程学报, 2018, 36(9): 857-862. ZHONG Ke,GUAN Guanghua,LIAO Wenjun, et al. Algorithm with variable downstream target depth based on balance of water volume in canal pond[J]. Journal of Drainage and Irrigation Machinery Engineering, 2018, 36(9): 857-862.(in Chinese)[4]姚雄, 王长德, 丁志良,等. 渠系流量主动补偿运行控制研究[J]. 四川大学学报(工程科学版), 2008, 40(5):38-44. YAO Xiong, WANG Changde, DING Zhiliang, et al. Study on canal system operation based on discharge active compensation[J]. Journal of Sichuan University(engineering science edition), 2008, 40(5):38-44.(in Chinese)[5]吴辉明, 雷晓辉, 秦韬,等. 南水北调中线渠系蓄量补偿运行控制方式[J]. 南水北调与水利科技, 2015(4):788-792. WU Huiming, LEI Xiaohui, QIN Tao, et al. Operation control of storage compensation of canal system in the Middle Route of South-to—North Water Diversion Project[J]. South-to—North Water Transfers and water science & technology, 2015(4):788-792.(in Chinese)[6]崔巍, 陈文学, 穆祥鹏,等. 长输水渠道前馈控制时间研究[J]. 水利学报, 2009, 40(11):67-72. CUI Wei, CHEN Wenxue, MU Xiangpeng, et al. Anticipation time estimation for feedforward control of long canal[J]. Journal of hydraulic engineering, 2009, 40(11):67-72.(in Chinese)[7]MUNIER S, BELAUD G, LITRICO X. Closed-form expression of the response time of an open channel[J]. Journal of irrigation & drainage engineering, 2011, 136(10):677-684.[8]BAUTISTA E, CLEMMENS A J, STRELKOFF T S. General characteristics of solutions to the open-channel flow, feedforward control problem[J]. Journal of irrigation & drainage engineering, 2003, 129(2):129-137.[9]BELAUD G, LITRICO X, CLEMMENS A J. Response time of a canal pool for scheduled water delivery[J]. Journal of irrigation & drainage engineering, 2013, 139(4):300-308.[10]OVERLOOP P J V, CLEMMENS A J, STRAND R J, et al. Real-time implementation of model predictive control on Maricopa-Stanfield Irrigation and Drainage District's WM Canal[J]. Journal of Irrigation & Drainage Engineering, 2010, 136(11):747-756.[11]MUNIER S, LITRICO X, BELAUD G, et al. Distributed approximation of open-channel flow routing accounting for backwater effects[J]. Advances in water resources, 2008, 31(12):1590-1602.[12]LITRICO X, FROMION V. Analytical approximation of open-channel flow for controller design[J]. Applied mathematical modelling, 2004, 28(7):677-695.[13]LITRICO X, FROMION V. Simplified modeling of irrigation canals for controller design[J]. Journal of irrigation & drainage engineering, 2004, 130(5):373-383. |
|
|
|