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A Calculation Method of Cascade Reservoir Storage Capacity under Grading and Periodic Drought Limit

A technique of cascading reservoirs and calculation methods, applied in the direction of calculation, complex mathematical operations, data processing applications, etc.

Active Publication Date: 2022-02-01
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of calculation method of cascade reservoir storage capacity of drought limit in stages, so as to solve the aforementioned problems existing in the prior art

Method used

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  • A Calculation Method of Cascade Reservoir Storage Capacity under Grading and Periodic Drought Limit
  • A Calculation Method of Cascade Reservoir Storage Capacity under Grading and Periodic Drought Limit
  • A Calculation Method of Cascade Reservoir Storage Capacity under Grading and Periodic Drought Limit

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Embodiment 1

[0046] Such as figure 1 As shown, in this embodiment, a method for calculating the drought limit storage capacity of cascade reservoirs in stages is provided, including the following steps,

[0047]S1. Analyze the characteristic storage capacity of multiple single reservoirs, aggregate and generalize the cascade reservoirs obtained by connecting multiple reservoirs, and obtain the characteristic storage capacity of the cascade reservoirs after aggregation and generalization;

[0048] S2. Determine the stages of drought warning for cascade reservoirs according to precipitation, runoff, user needs and reservoir regulation and storage in the basin;

[0049] S3. Analyze the inflow of a single reservoir, and calculate the inflow of cascade reservoirs after aggregation and generalization by superimposing the inflow of a single reservoir;

[0050] S4. Analyze the water supply guarantee target of the cascade reservoirs, and calculate the design water supply volume of the cascade rese...

Embodiment 2

[0092] In this embodiment, the implementation process of the calculation method provided by the present invention is specifically described in conjunction with specific examples. A certain reservoir B is a series of reservoirs downstream of the reservoir A, and a certain reservoir A mainly supplies water to the reservoir B.

[0093] 1. Obtain the characteristic storage capacity of cascade reservoirs after aggregation and generalization

[0094] Reservoir A and Reservoir B are cascade reservoirs, which jointly supply water to users such as cities and irrigation districts. The two reservoirs are generalized into one cascade reservoir, and the storage capacity of the cascade reservoir is the sum of the two reservoirs. Based on the investigation and collection of reservoir A and reservoir B scheduling data, the reservoir design parameters such as the characteristic storage capacity information of each reservoir are obtained, and then the characteristic storage capacity superpositi...

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Abstract

The invention discloses a method for calculating drought-limited storage capacity of cascade reservoirs by stages, which includes obtaining the aggregated and generalized characteristic storage capacity of cascade reservoirs according to the characteristic storage capacity of a single reservoir; determining the drought warning stages of cascade reservoirs; , superimpose and calculate the inflow of cascade reservoirs after aggregation and generalization; calculate the design water supply of cascade reservoirs by superimposing the design water supply of a single reservoir; divide the drought limit water level into drought warning water level and drought protection water level, and set water supply for the graded drought limit water level The protection coefficient realizes the purpose of drought warning and water supply restriction; the reservoir scheduling technology based on reverse order recursion comprehensively calculates the drought limit storage capacity of cascade reservoirs. The advantages are: determine the drought-limited storage capacity of typical cascade reservoirs across the country through zoning, classification, and grading, meet the needs of drought-resistant water sources, and provide reference for the optimal dispatch of water conservancy projects; formulate drought-limited storage capacity according to the characteristics of different regions, and provide guidance for drought defense command decision-making. Scientific basis and technical support.

Description

technical field [0001] The invention relates to the technical field of reservoir drought-resistant dispatching, in particular to a method for calculating drought-limited storage capacity of cascade reservoirs in stages. Background technique [0002] Drought is the main natural disaster in my country, and the risk is increasing day by day. Drought is an old problem in my country's disaster prevention. With the rapid increase of socioeconomic distribution density, the losses caused by droughts of the same level are significantly enhanced. Drought defense is facing new challenges, which is a new issue in disaster defense. For a long time, there has been a lack of key indicators for drought disaster identification such as drought disaster prevention. The uncertainty of the occurrence process of drought events has made drought early warning an insurmountable obstacle for a long time. However, with the continuous improvement of the network of meteorological and hydrological mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/18G06Q10/06G06Q50/06
CPCG06F17/18G06Q10/06393G06Q50/06Y02A10/40G06Q50/02
Inventor 严子奇郑金丽周祖昊严登华贾仰文王浩刘佳嘉
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES