Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Discrimination Method for Reservoir Water Temperature Structure in Water Conservancy and Hydropower Projects

A discrimination method and technology of water conservancy and hydropower, which are applied in the fields of hydropower generation, data processing application, electrical digital data processing, etc., can solve the problem of limited influence of heat transfer, and achieve the effect of convenient calculation, high accuracy and simple input conditions.

Active Publication Date: 2022-05-17
POWER CHINA KUNMING ENG CORP LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the most commonly used α and β index methods only consider the relationship between inflow and storage capacity. For power stations with high stagnant water level, since the lower layer water of the reservoir is rarely used and is difficult to be disturbed, it is caused by convection with the upper layer water. The heat exchange is less, and the influence of turbulent diffusion on heat transfer is limited. Therefore, the α and β index method judges the reservoir as a mixed type. If both the dam and the dead water level are high, the possibility of stratification will occur. still big

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Discrimination Method for Reservoir Water Temperature Structure in Water Conservancy and Hydropower Projects
  • A Discrimination Method for Reservoir Water Temperature Structure in Water Conservancy and Hydropower Projects
  • A Discrimination Method for Reservoir Water Temperature Structure in Water Conservancy and Hydropower Projects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] A method for discriminating the water temperature structure of a water conservancy and hydropower project reservoir, comprising the following steps:

[0035] (1) According to the design results of water conservancy and hydropower projects, the monthly storage capacity of the reservoir, the monthly runoff at the dam site, and the maximum and minimum monthly flow at the dam site during the year are collected under the average operating conditions for many years. The storage capacity and discharge of three typical reservoirs are shown in Attached Table 1 and Attached Table 2. According to Attached Table 2, the monthly runoff = monthly flow × number of days in a month × 24 hours × 60 minutes × 60 seconds is used to calculate the three reservoirs. monthly flow. According to Table 2, find out the maximum monthly flow and the minimum monthly flow of the three reservoirs in a year.

[0036] Table 1

[0037] Unit: 10 8 m 3

[0038]

[0039] Table 2

[0040] Unit: m 3 / ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for discriminating the water temperature structure of a water conservancy and hydropower project reservoir, and the discriminating method includes a discriminating calculation formula, a discriminating criterion formula and the like. The method of the invention has been verified in domestic hydropower stations and reservoir projects in the Lancang River, Jinsha River, Yalong River and other watersheds, and has high accuracy. The method of the invention has simple input conditions and convenient calculation, can quickly determine the structural type of the water temperature of the reservoir, and can provide important technical support for subsequent engineering design of water conservancy and hydropower.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to the technical field of a method for discriminating the water temperature structure of a water conservancy and hydropower engineering reservoir. Background technique [0002] Due to the differences in reservoir capacity and water depth, frequency of water exchange in the reservoir, reservoir operation mode, hydrogeology, meteorology, geographical location and other factors, the water temperature of the reservoir changes with different characteristics of the water depth. The gravitational effect formed by the density stratified distribution is different from the mixing effect formed by the water flow in the reservoir, and the difference in the strength of the vertical stratification is very large. Generally, it can be divided into mixed type, transitional type and split type from weak to strong. There are three layers of structure. In terms of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/18G06F16/2458G06Q50/26
CPCG06F17/18G06F16/2462G06F16/2477G06Q50/26Y02E10/20
Inventor 郝红升陈媛媛梁瑞峰梁礼绘
Owner POWER CHINA KUNMING ENG CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products