Power generation risk-oriented hydropower station optimal operation chart drawing method

Abstract

The invention discloses a power generation risk-oriented hydropower station optimal operation chart drawing method. According to evaluation criterion and standard of a reservoir, the risk rate of the evaluation requirement cannot be met by adopting historical runoff series estimation, and a hydropower station operation chart scheme capable of increasing average power generation benefit and fully considering the power generation risk in a certain specified period (such as an evaluation period or a temporary operation period) is provided for a reservoir operation decision maker. The method can effectively coordinate the short-term benefit and long-term benefit of the reservoir and provides more decision information for the decision maker.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of reservoirs, in particular to a method for compiling an optimal dispatching diagram of a hydropower station. Background technique [0002] Reservoir dispatching technology is one of the necessary means to realize the normal operation of the reservoir. According to the comprehensive utilization tasks undertaken by each reservoir, it uses the storage capacity of the reservoir to optimize the time and space distribution of water resources, improve the management and operation level of the reservoir, and achieve prosperity, The purpose of eliminating pests can improve the utilization rate of water resources and water energy resources. [0003] Reservoir scheduling diagram is the core of reservoir scheduling technology. It is not only used to guide the actual scheduling and operation of hydropower stations, but also the basic basis for calculating the energy indicators of water conservanc...

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Problems solved by technology

[0006] (1) For the optimization goal: the existing hydropower station dispatching diagram compilation methods all use the multi-year average benefit maximization as the optimization goal, but: ① the current hydropower station evaluation system is based on the year as the evaluation unit length, that is, once a year for evaluation, reservoir dispatching Workers not only hope that the multi-year average benefit is the largest, but also hope that the dispatching plan can obtain greater benefits for various years, at least not inferior to the conventional dispatching plan, so as to complete the annual assessment task indicators; ② For some temporary stages of hydropower plants ( For example, the unit is not fully installed in the early stage of construction, the unit is overhauled, etc.), the boundary conditions of dispatching are very different, and such a stage is often only maintained for one or several years, so the model of maximizing the expected value cannot answer the question in these years of operation. Whether the power generation benefit of the power plant is greater and the risk is less

[0007] (2) Controlling the oscillation or fluctuation of the dispatching line: the existing method for compiling the dispatching diagram of a hydropower station cannot consider the oscillation or fluctuation of the dispatching line in the dispatching diagram, and the automatically generated dispatching diagram often needs manual correction before it can be used

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