Gate-front control point variable target water level control system and mode based on channel pool storage balance

Abstract

The invention discloses a gate-front control point variable target water level control system and mode based on channel pool storage balance. The channel system is a water delivery open channel systemwhich is divided into a plurality of channels through a plurality of throttling gates; a plurality of water taking ports are formed in each channel pool, and the water taking opening is formed in thedownstream of the channel pool. The system comprises a control module, a sensor device, a parameter input device and a gate opening and closing device, wherein the sensor device, the parameter inputdevice and the gate opening and closing device are connected with the control module. The control mode is characterized in that a multi-constraint condition is taken into consideration, and the calculation of the target water level of the control point of the channel before the channel is changed under the condition that the water taking plan is known, so that the situation that the storage capacity change of the channel pool is too large is avoided according to different water taking working conditions, and the water supply burden of an upstream water source project is reduced, and the wastewater of the downstream waste water is reduced. Accordingly, the channel system is enabled to achieve control requirements such as rapidity, stability and accuracy in the channel system operation scheduling.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a water level control system and mode based on the control point variable target water level in front of the gate based on the storage balance of the canal pond. Background technique [0002] Water is the source of life, the key to production, and the foundation of ecology. my country's water resources are spatially uneven: more in the south than in the north, more in the east and less in the west, and precipitation decreases from the southeast coast to the northwest inland. The shortage of water resources in the northern region has seriously affected the healthy development of the economy and society in the region and the normal life of the people. Promoting water conservancy has always been a major event in governing the country. In order to alleviate the plight of water-shortage areas, a large number of water diversion projects have emerged. Under the a...

AI Technical Summary

Problems solved by technology

The constant water level in front of the sluice is a commonly used method in the operation control of open channels. The control principle is clear and the effect is good, but it is easy to cause large changes in the storage capacity of the channel, and the safety and stability of the control are limited.

If the target water level of the control point in front of the sluice is kept constant, that is, when the water level in front of the sluice is operated at a constant water level, after the water intake in the middle and lower reaches of the canal pond starts to take water, the flow in the canal pond will increase accordingly to meet the water intake requirements of the water intake, resulting in When the water surface in the canal pond rises, a large amount of storage needs to be replenished at this time, which will cause a shortage of water supply from the upstream water source; and after the water intake is closed, the flow in the canal pond will also decrease, resulting in a drop in the water surface line in the canal pond , part of the original storage in the canal pond becomes waste water, which reduces the efficiency of canal water utilization of water resources and causes irrational use of water resources

In addition, in the process of changing the flow in the canal pond with the opening and closing of the water intake, in order to maintain a constant target water level at the control point in front of the sluice, it is necessary to quickly fill or discharge water into the canal pond, which will cause the upstream of the canal pond The speed of the water level changes beyond the limit, causing unsafe operation of the canal pond, which can easily cause the lining roof of the canal to be overturned by pore water pressure

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