Improved long series method-based reservoir multi-level scheduling graph compiling method

Abstract

The invention relates to an improved long series method-based reservoir multi-level scheduling graph compiling method, which is characterized by comprising the following steps of: (1) calculating a comprehensive water supply flow of a reservoir according to a water supply task; (2) carrying out long-series runoff adjustment calculation, and initially simulating a benefit-making reservoir capacity; (3) drawing a reservoir water level line in an inverse time sequence; (4) defining two damage years; (5) counting the damage year, calculating the water supply guarantee rate, If the requirement is not met, repeating the steps (3) to (5) to determine the benefit-making storage capacity; (6) calculating a water level line by ensuring a water supply flow inverse time sequence, and taking an upper envelope line as an upper distribution line; (7) calculating a water level line according to a reduced water supply flow inverse time sequence, and taking an upper envelope line as a lower distribution line; (8) calculating a water level line according to a water supply flow time sequence, and taking down an envelope as a limited water supply line; and (9) drawing a reservoir multi-level scheduling graph. According to the method, the defects of a traditional reservoir multi-level scheduling graph compilation method can be overcome, and effective guidance is provided for operation of a multi-task reservoir.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a method for compiling multi-level scheduling diagrams of reservoirs based on the improved long series method. Background technique [0002] Reservoir scheduling is the core link of reservoir operation management. Its scheduling methods are divided into conventional scheduling and optimal scheduling. In actual operation, conventional reservoir scheduling charts are generally used for comprehensive reservoir scheduling. However, the existing methods for compiling reservoir operation diagrams fail to achieve the coordination and unification of runoff regulation calculation and operation diagram compilation, and there are certain deviations in the drawn results, and most of them are for single-purpose reservoirs. The different dispatching tasks of the comprehensive utilization of reservoirs correspond to their own dispatching lines, a...

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Problems solved by technology

Although the representative years selected by these two methods are basically the same under normal circumstances, when encountering long series of runoff data with large changes in runoff series, difficulties in dividing wet and dry seasons, and large changes in annual water consumption, it will lead to the selection of There is a difference in representative years

[0004] (2) When the natural runoff has significant changes in abundance and dryness in a year, and the process of inflow and water use is quite different, although the water supply of the reservoir in the year meets the water demand requirements, there may be some months where the water supply of the current month cannot be met due to large changes in water consumption The problem of damage to tasks is not considered in the "Code for Design of Reservoir Operation" (GB / T 50587-2010) and "Code for Water Conservancy Calculation of Water Conservancy Engineering" (SL104-2015)

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