Feedforward control method for opening and closing time of open channel water dispatching gate

A feedforward control and time technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as affecting the water use efficiency of the canal system, difficult to determine the starting time of water intake at the water intake, and affecting the water intake of downstream users.

CN106647289AActive Publication Date: 2017-05-10WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-05-10

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Abstract

The invention discloses a feedforward control method for the opening and closing time of an open channel water dispatching gate. A system using the method comprises a water delivery open channel and a control system. Regulators are arranged at the upstream and downstream of the water delivery open channel. A water intake is disposed at the downstream of the water delivery open channel, is close to channel buildings, that is, the downstream of the water intake is the regulator or weir. A water flow may generate backwater due to the impact of the buildings. The backwater influence in the channel divides the channel into two sub channel sections by means of a theory such as an ID model. A rising water wave from the upstream is equal to a falling water wave due to the water acquisition of the water intake. A storage volume change in the downstream of the water intake is zero, that is, no water abandoning operation is in the channel, which requires the water should be taken after the rising water wave arrives at the water intake and before the increment of the flow at the water intake reaches a set water taking amount. The feedforward control method improves the water use efficiency of the channel system, reduces a waste of water resources, and improves the economic benefit of the channel water supply.
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Description

technical field

[0001] The invention relates to an open channel dispatching method, in particular to a feedforward control method for delayed opening and closing time of an open channel water transfer dispatching gate. Background technique

[0002] Water is the source of life and an essential factor in a series of civilized activities such as human survival, urban operation, and industrial development. However, my country's water resources are unevenly distributed across regions, generally showing more in the south than in the north, more in summer and less in winter. In addition, the long-term lack of water resources in the northwest of my country has seriously affected the development of the regional economy. In order to alleviate the water shortage in the north, the country has made great efforts in the rational distribution of water resources, and built a large number of water diversion projects, such as diverting the Yellow River to Jin, diverting Luan to Tianjin, dive...

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Embodiment Construction

[0071] The present invention will be further described below in conjunction with the accompanying drawings, but not as a limitation of the present invention.

[0072] Such as figure 2 Shown is a feedforward control method for the opening and closing time of the open channel water dispatching gate. The system used in this method includes: a section of water delivery open channel and a control system. The control system includes a sensor device 1, a parameter input device 2, a data central processing device 3, a monitoring display device 4 and a gate opening and closing device 5. The water intake is close to the canal building, that is, the downstream of the water intake is the control gate or weir, and the water flow will generate backwater due to the influence of the building. The impact of the backwater in the canal pool is divided into two by the theory such as the ID model. Considering the connection between the opening and closing mechanism of the control sluice and the ...