Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A method and system for dynamic control of minimum discharge flow of cascade hydropower stations

A control method and cascade power station technology, applied in hydropower stations, hydropower, water conservancy projects, etc., can solve problems such as inaccurate monitoring, achieve the effects of simplifying monitoring methods, reducing excessive discharge of water, and reducing hydrological monitoring elements

Active Publication Date: 2021-10-01
GUIZHOU WUJIANG HYDROPOWER DEV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It only realized the monitoring of the minimum discharge flow of the hydropower station, and it did not propose improvement measures for the monitoring of low flow, and there are still inaccurate monitoring

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 method and system for dynamic control of minimum discharge flow of cascade hydropower stations
  • A method and system for dynamic control of minimum discharge flow of cascade hydropower stations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a method for dynamic control of the minimum discharge flow of cascade hydropower stations, the method performs the following steps:

[0033] Step 1: Judging whether the original minimum discharge flow of the water reduction section between the cascade hydropower stations meets the optimal value interval;

[0034] Step 2: Carry out monitoring and analysis of the backwater in the reservoir area with different water levels on the dam, determine the length of the incompletely connected river section corresponding to different water level levels, and the flow or water level of the control section of the river section;

[0035] Step 3: Obtain the connection data and water resource utilization data of the water-reducing river section, and evaluate the control of the current minimum discharge flow according to the obtained data;

[0036] Step 4: Re-determine the control section of the minimum discharge flow scheduling;

[0037] Step 5: Through calcu...

Embodiment 2

[0045] On the basis of the previous embodiment, the step 1: the method of judging whether the original minimum discharge flow of the water-reducing section between the cascade hydropower stations satisfies the optimal value interval performs the following steps: Acquire the data of the water-reducing section formed by the cascade reservoirs , the data of the water-reducing river section at least includes: the ecological water demand, domestic water consumption and environmental water consumption of the water-reducing river section; the domestic water demand, ecological water consumption and environmental water consumption of the river section obtained through the hydraulic method And / or hydrological method to calculate the optimal value interval of the minimum discharge flow, and judge whether the original minimum discharge flow is in the optimal value interval; if not in the optimal value interval, then judge that the original minimum discharge flow is not the optimal value, I...

Embodiment 3

[0048] On the basis of the previous embodiment, said step 2: carry out the monitoring and analysis of the backwater in the reservoir area with different water levels on the dam of the reservoir, determine the length of the incompletely connected river section corresponding to different water level levels, and the flow rate or water level of the control section of the river section The method executes the following steps: According to the current control method, the fluctuation range of the water inflow in the selected interval is within the set threshold range, and the water level change range on the dam of the cascade reservoir is within the set threshold range to monitor the return water of different dam water levels in the reservoir area , determine the position of the backwater end of the reservoir area at different water level levels on the dam, and then determine the length of the incompletely connected river section corresponding to the different water level level and the...

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 belongs to the technical field of hydropower station control, and in particular relates to a method and system for dynamically controlling the minimum discharge flow of cascade hydropower stations. The method performs the following steps: Step 1: Judging whether the original minimum discharge flow of the water-reducing section between the cascade hydropower stations meets the optimal value interval; Step 2: Carrying out the monitoring and analysis of the backwater in the reservoir area with different water levels on the dam of the reservoir, and determining the water level of different water levels. The length of the corresponding incompletely connected river section, as well as the flow or water level of the control section of the river section; Step 3: Obtain the connection data and water resource utilization data of the water-reducing river section, and evaluate the control of the current minimum discharge flow according to the obtained data; Step 4: Re-determine the control section of the minimum discharge flow scheduling. On the basis of optimizing the control method, through the change of control conditions, a more accurate and convenient monitoring method for the minimum discharge flow of hydropower stations is proposed, which improves the water energy utilization efficiency of cascade hydropower stations under the premise of ensuring the river ecological environment in real time.

Description

technical field [0001] The invention belongs to the technical field of hydropower station control, and in particular relates to a method and system for dynamically controlling the minimum discharge flow of cascade hydropower stations. Background technique [0002] As the concept of ecological civilization construction such as "clear water and green mountains are golden mountains and silver mountains" has gradually become popular, people's vision of enjoying a beautiful ecological environment with ensuring the ecological flow (water level) of rivers and lakes (hereinafter referred to as "ecological flow") as their basic needs is becoming more and more popular. more intense. Alleviating the contradiction between economic and social water use and ecological water use is one of the main challenges facing the current and future water conservancy reform and development. In this context, it is crucial to strengthen the supervision of water projects, standardize the dispatch and ma...

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): E02B9/00G06Q50/06
CPCE02B9/00G06Q50/06Y02E10/20
Inventor 高英朱江刘泽文李成俊张娜汤成友王世平于洁徐伟肖卫同斌冉钦朋高攀宇曾适
Owner GUIZHOU WUJIANG HYDROPOWER DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com