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Method and device for automatically controlling water levels of multiple channel sections

A technology of water level and canal section, which is applied in the field of automatic control of multi-canal section water level, can solve the problems of slow water level regulation, long hydraulic transition time, high operation management cost, etc., to eliminate influence, overcome large time lag, and facilitate parameter setting Effect

Inactive Publication Date: 2011-01-05
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of frequent gate operations, long hydraulic transition time, and high operation and management costs caused by slow water level regulation and water volume regulation that interferes with the operation of downstream channels in the existing technology

Method used

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  • Method and device for automatically controlling water levels of multiple channel sections
  • Method and device for automatically controlling water levels of multiple channel sections
  • Method and device for automatically controlling water levels of multiple channel sections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present embodiment is an automatic control device for water level in multiple canal sections, such as figure 1 shown. This embodiment includes: a long-distance self-flowing water delivery open channel 1, the open channel is provided with a plurality of gates 3 separating the open channel, a water diversion port 2 is arranged near the upstream of each of the gates, and the gates of each of the gates are The opening and closing mechanism 209 is connected to the control unit 101 of each gate, and the control units of each gate are connected through an open channel data transmission network. The control unit includes, for example, figure 2 Shown: the front water level sensor 201 for measuring the upstream water level of the gate controlled by the control unit, the rear water level sensor 203 for measuring the downstream water level of the gate controlled by the control unit, and the gate opening sensor 202 for measuring the gate opening , the water level sensor before...

Embodiment 2

[0035] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment on the open channel data transmission network. The open channel data transmission network described in this embodiment is connected with a control center, such as Figure 4 shown.

[0036] This embodiment is a network with a control center. The control center is the upper computer, and all control units are used as the lower computers of the control center. The control center can perform overall data processing and control on the entire channel, but once a problem occurs in the control center, it will affect The entire channel is supplied with water, so this system needs more safety settings and redundant systems to prevent any mistakes.

Embodiment 3

[0038] This embodiment is an improvement of the above embodiment, and is a refinement of the control unit of the above embodiment. The control unit in this embodiment further includes: an upstream flow feedback control subunit connected to the upstream control unit, the upstream flow feedback control subunit is connected to the feedforward decoupling control subunit, and the feedforward decoupling control subunit It is connected with the downstream flow feedback control subunit and gate flow control subunit.

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Abstract

The invention relates to a method and a device for automatically controlling water levels of multiple channel sections. The device comprises a water delivery open channel and a plurality of gates, wherein a water-dividing opening is reserved at a place close to the upstream of each gate; a gate opening and closing mechanism of each gate is connected with a control unit of each gate; and the control units are connected through a network. The control unit comprises a gate-front water level sensor, a gate-rear water level sensor and a gate open degree sensor, wherein the gate-front water level, gate-rear water level and the gate open degree sensors are connected with a low pass filter; the low pass filter is connected with an A / D converter; the A / D converter is connected with a data acquisition unit; the data acquisition unit is connected with an industrial control computer; the industrial control computer is connected with a PLC; and the PLC is connected with the gate opening and closing mechanism. Due to the adoption of upper and lower stream data acquisition, gate and water flow control simultaneously, the method and the device avoid the influences of long time delay and coupling effect of the long-distance large-scale water delivery open channel and give full play to the advantages of the upstream control and the downstream control method in the water level regulation and water quantity regulation.

Description

technical field [0001] The present invention relates to an automatic control method and device for multi-canal section water level, which is an automatic control method and device, an automatic control method and device for hydraulic facilities, and an automatic control method and device for long-distance large-scale open channel transportation. Water flow automatic control method and device for water engineering. Background technique [0002] With the development of economy and society, the contradiction between supply and demand of water resources has become increasingly prominent, and many areas have built long-distance large-scale open channel water delivery projects. These channels are usually divided into multiple canal sections connected in series by multi-level control gates, and each canal section uses the opening and closing of the gates to adjust the water level and flow. In order to facilitate the stability of the flow at the water diversion along the canal, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B13/00
Inventor 崔巍陈文学刘之平吴一红穆祥鹏郭晓晨白音包力皋王晓松王秀英王琦陈兴茹许凤冉
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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