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Flood-control emergency processing method for dam

A technology for emergency treatment and dams, applied in water conservancy projects, sea area engineering, coastline protection, etc., can solve the problems that are difficult to comprehensively consider the maximum number of simultaneous opening of flood discharge locations, poor flood discharge effect, large randomness, etc., and achieve a control method Efficient and reliable, good flood discharge effect

Active Publication Date: 2020-04-28
POWERCHINA ZHONGNAN ENG
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AI Technical Summary

Problems solved by technology

[0006] 3) Under the condition of multi-hole flood discharge gates, it is difficult for the operator to comprehensively consider the optimal flood discharge location, dam body stilling force, and the maximum number of simultaneous gate openings allowed by the dam power consumption in a short period of time. poor

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  • Flood-control emergency processing method for dam
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  • Flood-control emergency processing method for dam

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the modification scheme of a conventional hydropower station in Hunan. The basic situation of the power station is as follows: There are left and right river channels in the dam area of ​​the power station. The left channel is equipped with 14-hole gates, and the right channel is equipped with 11-hole flood gates. Under normal circumstances, the right channel gate is a flood gate.

[0029] Such as figure 1 As shown, an embodiment of the present invention includes:

[0030] Step A, design the flood gate dispatch table (or linkage strategy table, conversion relationship between machine flow and unit output, etc.).

[0031] Step B, real-time detection of unit output, and when the total load shedding of the unit exceeds the set value of 20MW, the linkage control opening of each gate is calculated according to the flood discharge gate schedule and the current flood opening of the gate; among them, th...

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Abstract

The invention discloses a flood-control emergency processing method for a dam. The method includes the following steps that step A, a flood discharge gate schedule table is designed; step B, the output condition of a unit is detected in real time, and when the total load rejection amount of the unit exceeds the set value, linkage control opening degrees of gates are calculated according to the flood discharge gate schedule table and current flood discharge opening degrees of the gates; step C, a gate linkage opening scheme is obtained according to the linkage control opening degrees, calculated in step B, of the gates, and then control commands for the gates are determined according to the gate linkage opening scheme; and step D, the control commands for the gates are sent according to theset control strategy, and then the corresponding gates are opened for flood discharge. With the method, flood discharge can be performed automatically through linkage of the gates after load rejection of the unit, the control method is efficient and reliable, the flood discharge effect is good, the security guarantee is provided for safe operation of a power station reservoir area.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, in particular to an emergency treatment method for dam flood control. Background technique [0002] Conventional hydropower station flood gate control methods are based on the actual situation, and the operator manually controls the gate flood discharge remotely. However, due to the insufficient flood regulation performance of the run-of-the-river hydropower station, the unit load shedding is extremely sensitive to changes in the reservoir water level. After the load shedding of the unit, the guide vanes of the water turbine will be closed quickly, and the pressure of the pressure pipe of the water diversion system will change sharply and form a large water hammer pressure. The diversion water flow for power generation is accumulated in front of the reservoir dam. When the water flow is large during the flood season, it is easy to quickly form a stable water flow after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/20
CPCE02B7/20
Inventor 何哲文罗云李力黄开斌
Owner POWERCHINA ZHONGNAN ENG
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