Dynamic water level control method for three-dimensional and above cascade reservoirs in flood season

Abstract

The invention relates to a dynamic operation water level control method for a 3D or higher cascaded reservoirs in flood season. The method comprises the steps that 1) the relation of upper pre-impounded water level limits among the 3D or higher cascaded reservoirs is analyzed on the basis of an aggregation-decomposition theory and a pre-impounding pre-discharge method; 2) an optimized scheduling module which takes the minimal flood prevention risk rate, the minimal under-generation risk rate and the minimal under-impounding risk rate in the effective forecast period of a flood forecast as target functions, the operation water level in the flood season as a decision variable, and a manual fish swarm algorithm as an optimized solution algorithm is established, a non-inferior solution set is provided for dynamic operation water level control in the flood season, and a decision scheme set is provided for a multi-target decision module; and 3) the multi-target decision module which takes the minimal flood prevention risk rate, the minimal under-generation risk rate, the minimal under-impounding risk rate, the maximal generation capacity and the maximal impounding rate as evaluation indexes and a network analysis method as a multi-target evaluation method is established, and a preferable decision scheme of the dynamic operation water level control in the flood season is selected. Thus, theoretical basis and technical support are provided for scientifically making a combined dynamic operation water level control scheme for the cascaded reservoirs in the flood season.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of reservoirs, in particular to a method for dynamically controlling the operating water levels of three-dimensional and above cascade reservoirs during the flood season. Background technique [0002] The dynamic control of operating water level in flood season provides an effective way to solve the contradiction between flood control and prosperity in our country. The theory and method of dynamic control of reservoir operating water level in the flood season have made great progress, from static control of single flood limit water level and staged flood limit water level to dynamic control of operating water level in flood season, making full use of seasonal changes such as rainstorms and floods and meteorological and hydrological forecast information In the effective foreseeable period, the operating water level of the reservoir is appropriately raised by means of forecasting and pre...

AI Technical Summary

Problems solved by technology

Compared with the dynamic control of the operating water level of a single reservoir in the flood season, the combined use and dynamic control of the operating water level of cascade reservoirs in the flood season is more complicated. The number and protection objects increase, and the risk analysis of dynamic control of water level operation in flood season becomes more difficult; ③ The effective encounter period of hydrological forecast of each reservoir is different, and the difficulty of cascade reservoir forecast compensation and scheduling increases

Compared with the dynamic control and scheduling of the operating water level of the two-dimensional cascade reservoirs in the flood season, the difficulties are mainly reflected in the following: there is an analytical solution for the correlation equation between the upper limit of the dynamic control of the operating water level of the two-dimensional cascade reservoirs in the flood season; The analytical solution of the correlation equation between the dynamic control upper limit of the operating water level is not yet clear

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