A cascade power station ecological scheduling system suitable for producing drifting egg fishes

Abstract

The invention relates to the technical field of hydroelectric engineering ecological dispatching, and discloses a cascade power station ecological dispatching system suitable for producing drifting egg fishes, which is used for providing appropriate hydrological process conditions for drifting egg fish breeding and reducing the influence of cascade reservoir operation on the drifting egg fish breeding process. The method is based on the water level of a fish spawn spawning site and a fish spawn drifting river section; change in indicators such as flow, the upstream step is matched with the downstream step to adjust the water level of the fish spawning site and the fish egg drifting river section. Through the cooperative use of engineering measures and non-engineering measures, appropriatehydrodynamic process conditions are provided for the breeding of the fishes laying the drifting eggs, and the influence of the operation of the cascade reservoir on the breeding process of the fisheslaying the drifting eggs is reduced. The method is suitable for the ecological dispatching of the cascade power station nearby living fishes with drifting eggs.

Description

technical field [0001] The invention relates to the technical field of hydropower engineering ecological dispatching, in particular to a cascade hydropower station ecological dispatching system and method suitable for fish that produce drifting eggs. Background technique [0002] In recent years, my country's hydropower projects have developed rapidly. World-class hydropower project groups have taken shape in Jinsha River, Yalong River, Dadu River, Wujiang River, Nanpan River, Lancang River and other hydropower bases. Hydropower projects play important roles in flood control, power generation and irrigation. While bringing great benefits to rivers, shipping, etc., it also has adverse effects on river biological resources, especially fish and their living environment. The water storage operation of hydropower projects will change the hydrological regime of natural rivers, and change the runoff process and hydrodynamic conditions of the river downstream of the dam site. Becaus...

AI Technical Summary

Problems solved by technology

Existing research mainly focuses on the research on the ecological scheduling model and scheduling principles. The published patents mainly focus on the hydrodynamic conditions required by the spawning behavior of individual fishes, and propose corresponding discharge flow process schemes, without systematically considering a certain type. The needs of fish throughout the entire reproductive period, as well as the conditions and requirements for the implementation of ecological regulation during the fish reproductive period, such as start-up time, start-up flow, water level conditions and flow conditions of spawning grounds and fish roe drifting river sections, and engineering Coordination of other needs, etc.

Moreover, the existing research mainly focuses on a single cascade, and insufficient consideration is given to the joint dispatch of large-scale cascade power stations

In addition, when implementing the ecological degree, there are few studies on the combined use of engineering measures and non-engineering measures.

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