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Reservoir gate discharge curve calibration method and system based on water recession process fitting

A gate and backwater technology, applied in the direction of instruments, electrical digital data processing, computer-aided design, etc., to achieve the effect of simple and flexible operation, short response time, and easy implementation

Pending Publication Date: 2022-02-08
GUIZHOU WUJIANG HYDROPOWER DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method and system for calibrating discharge curves of reservoir gates based on regression process fitting, so as to solve the aforementioned problems existing in the prior art

Method used

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  • Reservoir gate discharge curve calibration method and system based on water recession process fitting
  • Reservoir gate discharge curve calibration method and system based on water recession process fitting
  • Reservoir gate discharge curve calibration method and system based on water recession process fitting

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Embodiment 1

[0040] Such as figure 1 As shown, in this embodiment, a method for calibrating the discharge curve of the reservoir gate based on the fitting of the receding water process is provided, which includes the following steps,

[0041] S1. Determine the calibration sequence of different gates;

[0042] S2. Determine the calibration sequence of different opening degrees of the same gate;

[0043] S3. Perform an error analysis on the opening and closing flow of the gate in the retreat section;

[0044] S4, using quadratic polynomials to fit the dewatering process;

[0045] S5. Back-substitution verification is performed on the calibrated leakage curve.

[0046] In this embodiment, step S1 is specifically, for different gates, the historical gate operation data of the gate with the earlier opening and closing order is more than the historical gate operating data of the gate with the later opening and closing order, therefore, the gate with the earlier opening and closing order It i...

Embodiment 2

[0065] In this example, taking the 2015-2020 Dahua Hydropower Station in the Wujiang River Basin as an example, using the gate discharge curve method described in the present invention, the discharge curve of the right middle hole of Dahua Water is studied to illustrate the effectiveness of the present invention and rationality.

[0066] Dahua Hydropower Station is the third cascade in the planning of water elevators on the main stream of Qingshui River. The power station is located in the middle reaches of Qingshui River, 2.6km below the mouth of the tributary Dumu River, at the junction of Kaiyang County and Fuquan City; the power station is 62km away from Guiyang City and 62km away from Kaiyang City. The county seat is 45km away, and it is a hydropower hub mainly for power generation. Dahua dam site controls drainage area of ​​4328km 2 , the annual average discharge of the dam site is 75.0m 3 / s, the annual runoff is 2.37 billion m 3 . The normal storage level of the re...

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Abstract

The invention discloses a reservoir gate discharge curve calibration method and system based on water recession process fitting. The method comprises the steps that S1, the calibration sequence of different gates is determined; S2, the calibration sequence of different opening degrees of the same gate is determined; S3, error analysis is carried out on the opening and closing warehousing flow of the gate of the recession section; S4, fitting is conducted on the water recession process by adopting a quadratic polynomial; and S5, back substitution verification is carried out on the calibrated discharge curve. The method has the advantages that the correlativity between the discharge curve error and the reservoir flow process line in the water recession process is explored from the phenomenon that the reservoir flow process line in the water recession process is suddenly raised or suddenly dropped due to opening and closing of a gate, and quadratic polynomial fitting is carried out on the water recession process; therefore, a water level-opening-drainage flow sequence meeting the general rule of the water recession process is reversely deduced, a new method and technology are provided for calibration of a drainage curve of a reservoir gate, and a good foundation is laid for accurate calculation of water affair calculation.

Description

technical field [0001] The invention relates to the technical field of calibrating discharge curves of reservoir gates, in particular to a method and system for calibrating discharge curves of reservoir gates based on fitting of a water retreat process. Background technique [0002] The discharge curve of the reservoir is the theoretical value obtained from the model test according to the design requirements when the reservoir is built. After the reservoir is completed and put into operation, there are many factors such as the construction error of the spillway, the construction error of the gate, the difference between the actual flow state of the water and the design flow state, etc. As a result, there are often differences between the actual discharge curve and the design value. In the actual dispatching operation of the power station, the accuracy of the discharge curve directly affects the calculation results of the discharge, which in turn affects the rationality of th...

Claims

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Application Information

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IPC IPC(8): G06F30/28G06F111/10G06F113/08
CPCG06F30/28G06F2111/10G06F2113/08
Inventor 徐伟谭乔凤朱喜曾体健李远军陈宇朱家波游生德吉学伟朱明星穆庆文王鹏田叶
Owner GUIZHOU WUJIANG HYDROPOWER DEV
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