Method for power generation by developing and utilizing dead water quantity of water reservoir

Abstract

The invention relates to a method for power generation by developing and utilizing the dead water quantity of a water reservoir, which comprises the following steps: (1) from an Nth level of water reservoir to a 2nd level of water reservoir in a drainage area, selecting at least one water reservoir between a designed dead water level and a designed silting water level, arranging at least one waterpassage which leads the dead water quantity of the water reservoir to a downstream water reservoir; (2) arranging a working strobe and a repair strobe which are opened and closed independently in each water passage respectively, or a common repair strobe; and (3) utilizing the dead water quantity from an upstream water reservoir to carry out power generation by a hydroelectric power station whichis matched with the downstream water reservoir. The water reservoirs at all levels also can be provided with the corresponding hydroelectric power stations, and the dead water quantity in the water reservoir at this level is utilized to carry out power generation. The dead water quantity of the water reservoir is developed and utilized to carry out the power generation, which not only can increase the power generation capacity and obtain cheap electric energy but also is beneficial to flood prevention and disaster reduction.

Description

Technical field [0001] The invention belongs to the field of hydropower and water conservancy projects, and particularly relates to the development and utilization of dead water in reservoirs. Background technique [0002] The design dead water level of the reservoir is also called the dead water level for power generation, and the amount of water below the dead water level is called dead water. Since the dead water power generation of the reservoir of the same level of power station will damage the related facilities and equipment of the power station, the dead water has been abandoned between the dead water level and the bottom of the reservoir since the date of meeting the requirements of the power generation trial operation conditions of the hydropower station. Dead water has always been a concept in textbooks. In the design of hydropower stations, it will not and cannot be included in the utilization of dead water, and there are no functional facilities to meet the use of de...

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Problems solved by technology

[0004] Taking the annual runoff of the upper reaches of the Yangtze River Basin in 1954 (the year with the largest annual runoff among the 119 years with historical records of hydrological data) as an example, the annual runoff was 575.1 billion cubic meters. Flow 20000m 3 Calculated per second, the annual water consumption for power generation is 630 billion cubic meters. The difference between the two shows that there is still a gap of more than 50 billion cubic meters in the water consumption for power generation in the year; if the power generation does not use dead water, the gap will be even greater

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