River ecological flow maintenance-orientated reservoir optimizing and dispatching method

A technology of ecological flow and reservoir, applied in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2010-09-15
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How to combine the flood ecological pulse, low water ecological pulse and minimum ecological water demand on the basis of ensuring the safety of human life and property and satisfying the basic needs of human beings for water, so as to

Method used

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  • River ecological flow maintenance-orientated reservoir optimizing and dispatching method
  • River ecological flow maintenance-orientated reservoir optimizing and dispatching method
  • River ecological flow maintenance-orientated reservoir optimizing and dispatching method

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Embodiment Construction

[0047] The present invention will be further described below with a reservoir in a certain river basin as an example.

[0048] (1) Reservoir inflow flow interval segmentation and parameter range determination

[0049] Using the daily runoff data for many years, the highest flood peak flow F in history is calculated 1 295.08m 3 / s, using the logarithm-Pearson type III probability distribution function, the peak discharge of the flood with a return period of 1.5 years is 42.38m 3 / s as flat beach flow F 2 , the 75th percentile F of the multi-year daily runoff of the reservoir section 3 6.43m 3 / s, the 5th percentile of annual daily runoff F 4 0.57m 3 / s, the historical minimum daily flow F 5 0.27m 3 / s; take three values ​​M 1 , M 2 and M 3 , the daily inflow (F) of the reservoir is divided into four intervals: F≥M 1 (Interval 1); M 2 ≤F1 (Interval 2); M 3 ≤F2 (Interval 3); F3 (Interval 4); the planned water supply Q of each month is the same as 5.79m 3 / s. m 1 ...

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Abstract

The invention discloses a river ecological flow maintenance-orientated reservoir optimizing and dispatching method, which comprises the following steps of: diving influx flow of a reservoir into four intervals according to the magnitude of the flow, diving the storage capacity of the reservoir into four intervals by using an upper dispatching curve, a lower dispatching curve and a dead storage curve, and formulating different water supply and letdown rules when the influx is in different flow intervals and the water level is positioned in different storage capacity intervals. When the flow is positioned in the interval containing flat shoal flow, the influx flow is totally used for meeting river ecological flow after meeting the water supply requirement; when the influx is positioned in the minimum flow interval, the reservoir reduces letdown to maintain river low-water ecological pulse; and when the water level is positioned in the interval above the upper dispatching curve, the reservoir enlarges the letdown to ensure the flood control function. The method also comprises the following steps of: quantizing a target value of dispatching by adopting a variable range method to meet the constrained planned water supply reliability, and simultaneously optimizing parameters in the dispatching rule by using a genetic algorithm to acquire optimal dispatching parameters under the condition of meeting the planned reliability.

Description

technical field [0001] The invention belongs to the field of river basin water resources management, and relates to a method for optimal operation of a reservoir oriented to maintaining the ecological flow of a river. Background technique [0002] Reservoirs meet the needs of human beings and at the same time meet the needs of river ecological flow through its regulation, which is a basic task of reservoir regulation and a basic requirement of river ecosystem protection. The existing reservoir optimal dispatching method oriented to the maintenance of river ecological flow can only effectively meet the minimum ecological water demand of the river, that is, after determining the minimum ecological water demand of the river, this value is taken as the minimum discharge of the reservoir. The operating parameters of the reservoir are adjusted to maximize water supply or power generation. However, this dispatching method will inevitably result in the simplification of the river f...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06N3/12
Inventor 杨志峰尹心安杨薇陈贺
Owner BEIJING NORMAL UNIVERSITY
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