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A method for simulating water discharge from a hydrological model reservoir

A technology of hydrological model and simulation method, applied in the direction of hydraulic model and so on

Active Publication Date: 2021-01-15
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for simulating the discharge of a hydrological model reservoir, thereby solving the aforementioned problems existing in the prior art

Method used

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  • A method for simulating water discharge from a hydrological model reservoir
  • A method for simulating water discharge from a hydrological model reservoir
  • A method for simulating water discharge from a hydrological model reservoir

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Embodiment

[0042] Such as figure 1 As shown, the embodiment of the present invention provides a method for simulating the discharge of a hydrological model reservoir, comprising the following steps:

[0043]S1. According to the reservoir design documents or actual operation reports, etc., collect basic information of the reservoir, mainly including five water level storage capacity information (total storage capacity, design flood level storage capacity, normal water level storage capacity, flood control limited water level storage capacity, dead storage capacity), 3 Maximum discharge of a control water level (maximum discharge below the check flood level, maximum discharge below the design flood level, maximum discharge below the normal water storage level), 2 monthly average discharges (power generation discharge, minimum ecological flow) , and economic and social water withdrawals;

[0044] S2, use the model to simulate the reservoir inflow and reservoir evaporation in the current pe...

Embodiment 2

[0052] This embodiment is based on the method in embodiment 1, and the method is embedded in the hydrological model to realize the simulation of the reservoir regulation and discharge process.

[0053] This embodiment mainly lists the simulation flowchart of the reservoir dispatching and discharging process, such as Figure 4 As shown, the specific program implementation depends on the language of the embedded model. where the unit of V is m 3 , the unit of Q is m 3 / s, the unit of T is s, the value is the number of seconds in the basic time unit of the model, which is used to calculate the conversion of flow and volume within a period, for example, T=86400s in daily simulation.

[0054] First, the hydrological model needs to be used to calculate the inflow of the river, the evaporation of the reservoir, and the economic and social water intake in the current period, and the initial reservoir capacity V0 of the current period is obtained by accumulating the reservoir capacit...

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Abstract

The invention discloses a reservoir water discharge quantity simulation method by using a hydrological model and belongs to the technical field of distributive hydrological model simulation application. The method comprises the following steps of collecting basic information of a reservoir; using the hydrological model to simulate the reservoir inflow quantity and the reservoir evaporation quantity in a current time period, and calculating the initial reservoir capacity of the current time period and the ultralimit discharge quantity exceeding the safe limited reservoir capacity; correcting the ultralimit discharge quantity exceeding the safe limited reservoir capacity to obtain the initial discharge quantity at the end of the time period; further calculating the initial reservoir capacityat the end of the time period; correcting the initial reservoir capacity and the reservoir discharging quantity at the end of the time period obtained through calculation to obtain the final reservoir capacity and the discharge quantity at the end of the current time period; recording relevant state information; and obtaining a final simulation result. The method has the advantages that limited reservoir parameter information is used for simulating the reservoir water storage and water discharge processes; the simulation precision of the hydrological model is improved; the whole reservoir dispatching simulation process is simple; and the program improvement realization is easy.

Description

technical field [0001] The invention relates to the technical field of distributed hydrological model simulation application technology, in particular to a hydrological model reservoir discharge simulation method. Background technique [0002] Distributed hydrological model is an effective means to explore and understand the process and mechanism of complex hydrological cycle, and it is also an effective tool to solve many practical hydrological problems. With the increase of human activities, the impact on the natural water cycle is gradually increasing. The natural water cycle process can be expressed by mathematical functions and has certain regularity. However, the impact of human activities cannot be quantified and has a certain degree of randomness. Reservoir construction is one of the most important factors affecting the process of river runoff, which has the effect of reducing abundance and increasing dryness of river runoff. In the process of simulating river flo...

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Application Information

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IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 刘佳嘉周祖昊严子奇贾仰文顾世祥梅伟王浩浦承松
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES