A control method of series canals based on storage balance of multi-canal ponds

Abstract

The invention discloses a serial channel control mode based on multi-drainage pool storage balance. When the flow of drainage pools changes, the upstream and downstream water level is recalculated. This assumes that the hydraulic slope and the bottom slope along the drainage pools are not changed, and the flow profile is linear; when the water storage of the drainage pools changes, the average variation of water depths of the drainage pools is calculated; and the openings of all gates are calculated according to new target flow and expected upstream and downstream water depths. According to the serial channel control mode, relatively stable water storage of multiple drainage pools can be kept at any time; the equal downstream water depth of all of the drainage pools is guaranteed, and convenience is provided for actual operation and monitoring; the accuracy in control is increased; and the response speed of channels and the stability of the control system are increased.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a method for controlling series channels based on storage balance of multi-channel ponds. Background technique [0002] Water is the source of life, the foundation of production, the key to ecology, and an indispensable and irreplaceable natural resource for human survival and development. Although my country's total water resources are abundant (the sixth in the world), its per capita share ranks 109th in the world, which is only 1 / 4 of the world's average level, and the regional distribution is also extremely uneven. Generally speaking, there are more in the south than in the north. Less, more summer and less winter. Since the 20th century, with population growth and rapid economic development, human consumption of fresh water resources has increased. At the end of the 20th century, the global annual water intake was six times that of the beginning of the ...

AI Technical Summary

Problems solved by technology

When the upstream constant water level is running, the water surface line of the channel is relatively high, and the water storage capacity of the canal section is large, so it can respond quickly and correctly to the water demand, but the shock time of the canal section caused by the sudden change of flow is also long; The water storage capacity of the canal section is small, which is likely to cause water loss and insufficient water supply to downstream users. Although the control storage method has flexible control and fast response speed, the cost of the channel is high, the algorithm is complicated, and the software development cost is high; equal volume operation is the constant water level of the upstream The compromise with the downstream constant water level operation can quickly change the water flow state of the entire canal system and avoid long delays, but the downstream water level will be changed during the equal volume operation process, making the downstream water depths unequal, and it is not convenient in the actual process. The water level is monitored in the middle of the section, which makes the actual operation inconvenient

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