High-pressure high-position self-circulation water delivery energy storage multi-stage power station and power generation method thereof

Abstract

The invention discloses a high-pressure high-position self-circulation water delivery energy storage multi-stage power station. The power station comprises a water pool, a water pressing cavity is formed in the bottom of the water pool, multiple layers of communicating power generation cavities are formed in the position, above the water pressing cavity, of the water pool, the water pressing cavity communicates with the lowermost power generation cavity, a water turbine generator set is arranged in each power generation cavity, the bottom of the water pressing cavity is connected with a water inlet of the uppermost water turbine generator set through a water delivery pipe, and a continuous water pressing mechanism is arranged in the water pressing cavity and used for conveying water in the water pool into the uppermost water turbine generator set through the water delivery pipe in a pressing manner. The invention further discloses a power generation method of the high-pressure high-position self-circulation water delivery energy storage multi-stage power station. The power generation method comprises the steps that the water pool is filled with water; and water is continuously pressed. The high-pressure high-position self-circulation water delivery energy storage multi-stage power station is small in occupied area, low in water demand and short in construction period, and flood disasters are reduced. According to the power generation method of the high-pressure high-position self-circulation water delivery energy storage multi-stage power station, automatic downward pressing can be achieved, and water delivery energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of power stations, in particular to a high-pressure, high-level self-circulating water transmission and energy storage multi-stage power station and a power generation method thereof. Background technique [0002] Currently, a pumped storage power station has an upper reservoir (upper pond) built at a height and a lower pond built downstream of the power station. The unit of the pumped storage power station can function as a general water turbine to generate electricity and as a water pump to pump water from the lower pool to the upper pool. During the low load of the power system, the unit of the pumped storage power station operates as a pump to store water in the upper pool; during peak load, it operates as a generator unit, using the water stored in the upper pool to generate electricity and send it to the grid. [0003] Pumped storage power plants have the following disadvantages: [0004] 1. It takes...

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Problems solved by technology

[0004] 1. It takes a lot of land to build upper and lower pools;

[0005] 2. The water demand is large, and a large-capacity pool needs to be built accordingly, which is prone to floods and poses hidden dangers to nearby residents;

[0006] 3. The construction of the upper and lower pools and the installation of the water delivery pipelines for the upper and lower pools require a lot of manpower, material and financial resources, and the construction period is also very long

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