Method for real-time optimal dispatching and benefit evaluation of cascade reservoir group

Abstract

The invention discloses a method for real-time optimal dispatching and benefit evaluation of a cascade reservoir group. The method comprises the following steps of: when a flood is forecasted, increasing the output power generation of each reservoir in advance, carrying out full-load operation on the upstream reservoirs to reduce the water levels of the reservoir to a dead water level threshold value and then empty the reservoir capacity; when the flood happens, closing the upstream reservoirs so as to back up the flood for the downstream reservoirs under the premise that the downstream reservoirs are fully loaded, and compensating the additionally generated power of the downstream reservoirs to the upstream reservoirs; if the water levels of upstream reservoir power stations rise to exceed a normal high water level and heavy rainfall is forecasted in N days, opening the upstream reservoirs to carry out flood discharge, and compensating the additionally generated power of the downstream water reservoirs to the upstream reservoirs; after the water levels fall, opening the upstream reservoir power stations to ensure that the downstream reservoir power stations are fully loaded; and evaluating the annual performance of the cascade reservoir group via the power of abandoned water of the upstream reservoirs and the additionally generated power of the downstream reservoirs. According to the method disclosed by the invention, measures such as pre-discharge and reservoir emptying, peak staggering and peak clipping, and flood tail interception and storage are adopted, so that less abandoned water of the cascade reservoirs is realized and the power generation benefit of the cascade reservoirs is improved.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of cascade reservoir groups, in particular to a method for real-time optimal dispatching and benefit evaluation of cascade reservoir groups. Background technique [0002] The previous single-reservoir optimal dispatch of cascade reservoirs can realize the self-benefit of one reservoir or several reservoirs, but it is difficult to reflect the adjustment and compensation between the cascades, and cannot realize the maximum benefit of the entire cascade. During the flood season, upstream reservoirs can bring benefits to downstream reservoirs by means of blocking storage and shifting peaks, but there is also a risk of water abandonment in upstream reservoirs, and the enthusiasm for peak shifting scheduling is not high. The traditional scheduling method is unfair to the upstream reservoirs, and it is not conducive to the joint peak-staggered scheduling of cascade hydropower station groups. ...

AI Technical Summary

Problems solved by technology

[0002] The previous single-reservoir optimal dispatch of cascade reservoirs can realize the self-benefit of one reservoir or several reservoirs, but it is difficult to reflect the adjustment and compensation between the cascades, and it is impossible to maximize the benefits of the entire cascade

During the flood season, upstream reservoirs can bring benefits to downstream reservoirs by means of blocking storage peaks and shifting peaks, but there is also a risk of water abandonment in upstream reservoirs, and the enthusiasm for peak shifting scheduling is not high.

The traditional scheduling method is unfair to the upstream reservoirs, which is not conducive to the joint peak-staggered scheduling of cascade hydropower station groups

Images