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Sea wind-driven water-pumping energy-storage hydraulic power generation device

A hydroelectric power generation device, pumped water energy storage technology, applied in the direction of hydropower generation, traditional hydropower energy, engine components, etc., can solve the problems of large influence, unstable output power of hydroelectric generators, etc., and achieve convenient operation, simple structure, small size big effect

Inactive Publication Date: 2013-11-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing literature, the power generation system combining wind power and hydraulic power generally uses wind power generators to generate electricity, and the electric energy is supplied to the pump to pump water to a high place, and the water is directly flowed down by the hydroelectric generator for power generation and then connected to the grid for power supply. The disadvantage of this method is that the hydroelectric generator The output power is unstable; another way is to use wind turbines to pump water to high reservoirs for energy storage, and then use hydroelectric generators to generate electricity and supply power to the grid. The disadvantage is that this method is greatly affected by the water resources of the reservoir

Method used

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Embodiment

[0024] Build the energy storage ball 1 of the concrete structure, the outer diameter of the sphere is 30m, and the wall thickness is 3m. The volume of water stored inside the energy storage ball is 7234.56m 3 -, put the energy storage ball 1 into the seabed at a depth of 400m. An offshore floating wind turbine with a rated power of 6MW is arranged on the sea. A tower 3 with a height of 100 meters is built on the platform 13. A wind wheel 5 and a nacelle 10 are installed on the top of the tower 3. A transmission 7 and a water pump 9 are arranged inside the nacelle 10. Since the water pump 9 needs to lift the seawater to a height of 500m and discharge it, the efficiency of the water pump is set at 75%. According to the law of energy conservation, the 6MW wind turbine configured at the rated power can work for 2.23 hours, and the energy storage ball All the seawater of 7234.56m3 inside is raised to 500m and discharged.

[0025] When the energy storage ball 1 works normally, the...

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Abstract

A sea wind-driven water-pumping energy-storage hydraulic power generation device comprises a wind turbine, an energy storage ball, a water pumping pump and a hydraulic power generation unit. The wind turbine is built above the sea level, the energy storage ball is built on the seabed below the sea level, a seawater inlet is formed in the energy storage ball, the hydraulic power generation unit is arranged at the water inlet for power generation, and the water pumping pump can discharge the seawater in the energy storage ball, which impacts the hydraulic power generation unit, into the sea after power generation. According to the device, wind-driven water-pumping energy-storage and hydraulic power generation are combined, the combined usage of the two energy sources is achieved, and accordingly, impact of wind-driven generation on power grids can be prevented, energy storage through the water resource can be fully used, and problems during current combined wind and hydraulic power generation are solved.

Description

technical field [0001] The invention relates to a power generation device, in particular to a hydroelectric power generation device for offshore wind pumping and energy storage. Background technique [0002] As an important and mature renewable energy among green energy sources, wind energy has the advantages of abundant reserves, wide distribution, and no pollution. After the wind turbine captures the wind energy, it generates electricity through the wind generator. Due to the randomness and intermittent nature of the wind, the output power of the wind generator is unstable. Wind power is very disadvantageous. Moreover, the demand of the grid does not match the power generation of the wind farm. When the demand of the grid increases, the wind farm often has no wind or the wind is weak and cannot meet the demand of the grid; Sodium leads to waste. [0003] As a kind of green energy, hydropower has the characteristics of low power generation cost, fast power generation sta...

Claims

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Application Information

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IPC IPC(8): F03B13/06
CPCY02E60/17Y02E10/22Y02E10/20Y02E60/16
Inventor 安利强孙少华周邢银
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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