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Cascade hydroelectric station surplus water optimizing method and system

A hydropower station and water optimization technology, applied in hydropower stations, hydroelectric power generation, traditional hydropower energy, etc., can solve unreasonable problems and achieve the effect of improving power generation efficiency and water use rationality

Inactive Publication Date: 2010-06-02
GUANGXI UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This is a static water abandonment strategy, which is unreasonable to a certain extent for single hydropower stations or cascade hydropower stations

Method used

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  • Cascade hydroelectric station surplus water optimizing method and system
  • Cascade hydroelectric station surplus water optimizing method and system
  • Cascade hydroelectric station surplus water optimizing method and system

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Experimental program
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Embodiment Construction

[0026] 1. Establish the output model of the unit

[0027] H is used to represent the net water head of hydropower generation, Q is the corresponding power generation flow, and η is the conversion efficiency of water energy to electric energy. According to the conversion mechanism of water energy to electric energy, at t 0 ~t 1 The electric energy produced by the hydropower station in time can be expressed as

[0028] W = ∫ t 0 t 1 9.81 ηQHdt - - - ( 1 )

[0029] ΔH is the head loss of the hydropower station. For the built hydropower station, the head loss ΔH is mainly related to the magnitude of the power generation flow Q. The larger Q is, the larger the value of ΔH is, and there is generally a nonlinear relationship between them. Usually, the head loss ΔH can be expres...

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Abstract

The invention discloses a cascade hydroelectric station surplus water optimizing method and a system. The invention is characterized in that the optimal dynamic surplus water boundary of the hydroelectric station can be determined according to the optimal coordination relation between the hydraulic head and the power discharge rate; the dynamic surplus water boundary dynamically changes as the hydraulic head and the power discharge rate of the hydroelectric station change; by combining the optimal dynamic surplus water boundary with the optimizing regulation model of the cascade hydroelectric station, the optimal power discharge rate and the surplus water flow rate of the hydroelectric station are determined by optimized means; and the specific implementation process should cooperate with the data acquisition system and the control system of the hydroelectric station. The invention abandons the traditional concept that surplus water produces losses in the static surplus water strategy, and realizes the dynamic optimal redistribution of the hydroelectric resources among the cascade hydroelectric stations by utilizing the surplus water of the hydroelectric stations, thereby enhancing the generating efficiency of the generator set and enhancing the overall operating economy of the cascade hydroelectric stations.

Description

technical field [0001] The invention relates to a method and a system for determining the optimal water flow rate of each cascade hydropower station by using the optimal coordination relationship between the water head of the hydropower station and the power generation flow, which can improve the comprehensive economic efficiency of the operation of a single hydropower station and a cascade hydropower station. The invention belongs to hydropower generation field. Background technique [0002] There are many rivers and abundant water resources in our country. Because it is a renewable energy source, using it to generate electricity is clean and non-polluting. Reasonable and efficient use of water resources can save coal and other non-renewable resources and achieve sustainable energy utilization. and reduce air pollution [1] . Cascade hydropower stations can realize the repeated reuse of water resources, and have become one of the main forms of rational development and effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/02E02B9/00
CPCY02E10/22Y02E10/20
Inventor 吴杰康郭壮志丁国强何芬
Owner GUANGXI UNIV
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