Real-time calculation method for reservoir level-storage capacity on the basis of Kriging interpolation

A technology of Kriging interpolation and reservoir water level, which is applied in calculation, water conservancy engineering, water conservancy engineering equipment, etc. It can solve the problem of low accuracy of calculation and storage capacity data, achieve heavy workload, good scalability, and ensure accuracy and reliability effects

Active Publication Date: 2018-02-02
CHINA YANGTZE POWER
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Problems solved by technology

How to calculate the corresponding storage capacity data based on the real-time water level has always been a problem that has plagued reservoir dispatching and forecasting personnel. The traditional method is based on the large-scale water level-storage capacity curve provided by the reservoir designer, and the real-time observed water level uses adjacent linear interpolation. The method calculates the corresponding storage capacity, but the accuracy of the storage capacity data calculated by this method is not high

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  • Real-time calculation method for reservoir level-storage capacity on the basis of Kriging interpolation
  • Real-time calculation method for reservoir level-storage capacity on the basis of Kriging interpolation
  • Real-time calculation method for reservoir level-storage capacity on the basis of Kriging interpolation

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Embodiment Construction

[0031] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] The technical solution of the present invention will be further specifically described below through examples.

[0033] For a large reservoir, the water level-storage capacity data provided by the designer are shown in Table 1. These data are divided into two parts, one part is sample test data, and the other part is sample verification data. Using kriging interpolation method and piecewise linear interpolation method to calculate the corresponding storage capacity data according to the water level, and analyze and compare with the verification data.

[0034] Table 1: Basic data from water level to storage capacity provided by the reservoir designer

[0035]

[0036] In step 1, the water level-storage capacity curve (as shown in Table 1) provided by the designer covers the minimum and maximum water level values ​​and the corresponding storage ...

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Abstract

The invention discloses a real-time calculation method for reservoir level-storage capacity on the basis of a Kriging interpolation. Large-scale level-storage capacity curve data provided by a designer of a reservoir construction period is used as sample data, and real-time storage capacity data is calculated by a Kriging interpolation method through the actual measurement real-time level data. Byuse of the method disclosed by the invention, a non-monotonic relationship between the reservoir level and the storage capacity can be reflected. Compared with a traditional method, the method disclosed by the invention has a small error for a storage capacity rechecking result, and can be applied to production reality.

Description

technical field [0001] The invention relates to a device for a lower draft tube of a Francis water turbine, and belongs to the field of auxiliary maintenance devices for the draft tube of a hydraulic turbine. Background technique [0002] The storage capacity of a reservoir is one of the important parameters in the design and operation management of a water conservancy project. However, the storage capacity cannot be directly measured and must be calculated based on the water level of the corresponding reservoir. The water level-storage capacity relationship of a reservoir is nonlinear. In the demonstration and design stages of reservoir construction, the water level and storage capacity results will be calculated based on the corresponding aerial survey topographic maps and other data. For example, the calculation results of the Three Gorges storage capacity are measured by the Yangtze River Committee using the 1:50000 aerial survey topographic maps of the State Bureau of S...

Claims

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Application Information

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IPC IPC(8): G06F17/50E02B1/00
CPCE02B1/00G06F30/13
Inventor 汤正阳张雅琦程建葛文波刘志武张军樊启萌刘煜徐波
Owner CHINA YANGTZE POWER
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