Identification method for pump station characteristic curve coefficients of one-dimensional hydrodynamic model

A characteristic curve and identification method technology, which is applied in the field of identification of characteristic curve coefficients of one-dimensional hydrodynamic model pumping stations, to achieve the effect of improving accuracy

Active Publication Date: 2018-01-26
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for identifying the characteristic curve coefficients of

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  • Identification method for pump station characteristic curve coefficients of one-dimensional hydrodynamic model
  • Identification method for pump station characteristic curve coefficients of one-dimensional hydrodynamic model
  • Identification method for pump station characteristic curve coefficients of one-dimensional hydrodynamic model

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Embodiment

[0080] In this embodiment, the Niantou pumping station of the Miyun Reservoir regulation and storage project is taken as an example. According to the method described in this application, the curve coefficients of the pumping station are identified and updated in real time according to the working conditions of the pumping station.

[0081] The Miyun Reservoir Storage Project is a supporting project for the Beijing section of the middle line of the South-to-North Water Diversion Project. The project transfers the remaining water from the provinces and cities along the middle line to the Miyun Reservoir under pressure, which can increase the water storage capacity of the Miyun Reservoir, replenish the water source of Mihuaishun, and improve the local water quality. ecosystem. Among them, the section from Tuancheng Lake to Huairou contains a total of 6 pumping stations connected by open channels. The pumping station is the main control building of the system. Accurately identify...

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Abstract

The invention discloses an identification method for pump station characteristic curve coefficients of a one-dimensional hydrodynamic model, and relates to the technical field of hydrodynamic model parameter identification. The method comprises the steps that a one-dimensional open channel hydrodynamic model of a target open channel is built on the basis of a Saint-Venant equation, and roughness coefficients of a front connection channel and a back connection channel of a to-be-identified pump station are calibrated; the to-be-identified pump station boundary takes a continuity equation and apump station characteristic curve as consistency equations to be coupled with the Saint-Venant equation in the step 1 to form a one-dimensional channel-pump station hydrodynamic model containing the to-be-identified pump station boundary; state-space equations including the state equation X<n+1>=phi<n>X<n>+w<n+1> and the measurement equation Y<n+1>=HX<n+1>+v<n+1> which take the three pump stationcharacteristic curve coefficients of the to-be-identified pump station as state vectors are constructed; and observation data obtained in the time period when the angle or rotating speed of a pump station unit is invariable is selected, and a Kalman filter set is called to assimilate the curve coefficients. According to the method, the curve coefficients under any working conditions are automatically identified, and therefore the value simulation precision and adaptability of the river network hydrodynamic model are effectively improved.

Description

technical field [0001] The invention relates to the technical field of hydrodynamic model parameter identification, in particular to an identification method for characteristic curve coefficients of a one-dimensional hydrodynamic model pumping station. Background technique [0002] The pumping station is one of the common canal hydraulic structures, which play an important role in irrigation and drainage, water transfer across river basins, and water supply for production and living. The characteristic curve of the pumping station directly reflects the relationship between the relevant hydraulic elements of the pumping station, and is a commonly used boundary compatibility condition of the pumping station in one-dimensional hydrodynamic models. Therefore, it is extremely important to accurately identify the coefficients of the characteristic curve of the pumping station to improve the accuracy of the one-dimensional open channel hydrodynamic model. [0003] In one-dimension...

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06G06Q50/06
Inventor 雷晓辉张召田雨王浩孟现勇王超张忠波杨明祥蔡思宇
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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