Method for drawing joint scheduling graph of step reservoir

Abstract

The invention discloses a method for drawing a joint scheduling graph of a step reservoir. The method comprises the following steps of: drawing an initial scheduling graph of each reservoir according to designed guaranteed power output of each hydropower station progressively from upstream to downstream by an equi-output method and according to a single reservoir scheduling graph drawing method; drawing an initial scheduling graph for joint scheduling of a step leading reservoir; performing optimization calculation on the joint scheduling graph of the step reservoir; calculating the water power of each hydropower station from top to bottom in a water power sequence according to the initial scheduling graph by taking a long-series history runoff process as an input and taking a period of ten days as a calculation interval, and optimizing scheduling lines in the joint scheduling graph of the step reservoir; and outputting a last joint scheduling graph of the step reservoir and a scheduling rule. Indicated power output in a step joint scheduling graph is used for coordinating, so that complementary scheduling effect of the step reservoir is brought into full play, damage depth of the reservoir is reduced and the utilization ratio of water power is increased.

Description

technical field [0001] The invention relates to the technical field of hydropower station reservoir dispatching, in particular to a method for making a joint dispatching diagram of cascade reservoirs. Background technique [0002] Generally, in the establishment of reservoir operation mode and real-time dispatch of reservoirs above seasonal regulation, the reservoir dispatching chart is mostly used for guidance, that is, according to the position of the water level of the reservoir in the dispatching chart, the power station indicates the output to guide the reservoir dispatching. This method is only suitable for single-database scheduling, and the technology is relatively mature. With the continuous advancement of my country's hydropower station construction, more and more complex cascade reservoirs with close hydraulic connections have been formed in many river basins. Joint scheduling can give full play to the role of compensation and scheduling between reservoirs, and c...

AI Technical Summary

Problems solved by technology

The dispatching rules are compiled based on the dispatching function established through regression analysis based on factors such as the inflow flow of each power station, reservoir water level, outflow flow, and decision-making output. Since the time-calendar method is used for calculation, the randomness of runoff is indirectly considered. However, due to the The form is expressed as a mathematical expression, and the regression technology determines that this method is an empirical result, the concept is not strong, and the usability is also very low

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