Dynamic Control Method of Water Supply Reservoir Scheduling Diagram Based on Runoff Forecast

Abstract

The invention discloses a method for dynamic control of a water-supply reservoir scheduling diagram based on runoff forecasting, and relates to the fields of water resource management and water conservancy project management. It includes the following steps: firstly, calculate the water supply dispatching time-by-period for all years, avoiding the difference in the selection of typical years and the problem of low guarantee rate due to the small number of samples; Introduce the control factor of the water situation, and select the relative position of the dispatching line in the dispatching diagram under the guidance of the long-term, medium-term and short-term hydrological runoff forecasts, so as to realize the dynamic control of the dispatching line under different flood and dry water conditions. It overcomes the problems of underrepresentation of typical years and failure to consider forecasted water in existing methods. It can comprehensively cover the incoming water and water demand that may occur in the water supply dispatching of the reservoir, and dynamically control the water supply mode according to the forecasted water abundance and dryness, so as to achieve the goal of optimal utilization of water resources.

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

Images