Water supply type reservoir operation chart dynamic control method based on runoff forecasting

Abstract

The invention discloses a water supply type reservoir operation chart dynamic control method based on runoff forecasting, and relates to the field of water resource management and water project management. The method comprises following steps: firstly, water supply dispatching calculation is carried out on all years time by time, and the problem of differences of typical year selection and the low assurance rate caused by few samples is solved; on the basis of a conventional water supply dispatching line calculation method, a control factor of a water coming situation is introduced, the opposite position of an operation line in an operation chart is selected as long-term, medium-term and short-term hydrological runoff forecasting, and dynamic control over the operation line under the different rich and low coming water situation; and the problem that according to an existing method, the typical year representativeness is insufficient, and forecasting incoming water is not considered is solved. The water coming and needing situation possibly appearing in reservoir water supply operation can be comprehensively covered, the water supply manner is dynamically controlled according to the rich and low condition of forecasting incoming water, and the aim of optimal utilization of water resources is achieved.

Description

technical field [0001] The invention relates to the fields of water resources management and water conservancy project management, more specifically, it is a method for dynamic control of a water-supply reservoir scheduling diagram based on runoff forecasting. Background technique [0002] The reservoir water supply scheduling map is a tool to guide the annual or multi-year regulation of the water supply reservoir operation. The water supply scheduling map is drawn up based on the historical runoff statistical data of the reservoir and the corresponding design water demand flow data. water dispatch Figure 1 Generally, time is taken as the abscissa, and the reservoir water level (or storage capacity) is taken as the ordinate, and different water supply areas are divided by the guiding line for controlling the water supply mode, and its mathematical description can be expressed as: [0003] Q S =f(Z,T) [0004] Among them, Q s , Z, and T respectively represent the water su...

AI Technical Summary

Problems solved by technology

[0007] In the actual dispatching operation, due to the great randomness in the distribution of the annual or interannual incoming water of the water supply reservoir, when the forecasted incoming water is relatively abundant, operating according to the guidance of the water supply dispatching map will cause a large amount of abandoned water in the reservoir, and the water utilization rate will be higher. Low; when the incoming water is predicted to be dry, normal scheduling according to the water supply scheduling map may cause insufficient water supply or even extreme damage in the later period

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