Water flow time lag processing method for cascade reservoir short-term optimal scheduling

Abstract

The invention discloses a water flow time lag processing method for cascade reservoir short-term optimal scheduling. The water flow time lag processing method comprises the steps of deducing a time lag functional operator and utilizing the time lag functional operator to conduct cascade reservoir short-term optimal scheduling calculation. In the deduction step of the time lag functional operator,upstream and downstream reservoir inflow and outflow and local inflow data based on actual measurement are given on the basis of big data analysis, functional analysis and a space mapping principle toobtain the time lag functional operator is obtained. In the cascade reservoir short-term optimal scheduling calculation step, a globally optimal solution of short-term optimal scheduling is obtainedthrough effectively combining the time lag functional operator with dynamic planning. The water flow time lag processing method for cascade reservoir short-term optimal scheduling overcomes the defects that parameters are difficult to calibrate and errors are great of the traditional time lag processing method, and has high practicability.

Description

technical field [0001] The invention belongs to the technical field of optimal operation of hydropower energy and optimal scheduling of electric power system power generation, and in particular relates to a processing method for short-term optimal scheduling of cascaded reservoirs and water flow lag. Background technique [0002] In the optimal scheduling of cascade hydropower station reservoirs, if the distance between the upstream and downstream hydropower station reservoirs is relatively long, the lag time for the outflow flow of the upstream reservoir to reach the downstream reservoir cannot be ignored in terms of the operation plan time (one day), so when formulating The impact of water flow delay must be considered in the cascade short-term optimal operation plan. But in the cascade short-term optimal scheduling process, the problem of dealing with delay is very complicated. In recent years, some scholars at home and abroad have also done relevant research on the abov...

AI Technical Summary

Problems solved by technology

This method can not only effectively solve complex delay problems such as interval inflows, but also effectively deal with the hydraulic connection between cascades, and provide a more accurate method for the formulation of short-term optimal dispatching plans for cascade reservoirs

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