Water pumping and compressed air energy storage system

A technology of compressed air energy storage and pumped water energy storage, which is applied in traditional hydroelectric energy, hydroelectric power, engine components, etc., can solve problems such as dependence on geographical conditions, and is not limited by the energy storage period, has broad application prospects, and is low in cost. Effect

Active Publication Date: 2012-11-28
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system of the present invention makes full use of the working characteristics of the air pressure tank to miniaturize the pumped energy storage and compressed air energy s

Method used

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  • Water pumping and compressed air energy storage system
  • Water pumping and compressed air energy storage system
  • Water pumping and compressed air energy storage system

Examples

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Embodiment

[0043] figure 1 It is embodiment 1 of the pumped compressed air energy storage system of the present invention. The four-machine pumped compressed air energy storage system of the present invention adopts the four-machine pumped water energy storage unit, and the air pressure tank is a vertical air bag type. Wherein, the reservoir 1, the water pipelines 2, 4, 6, 8, 10, 11, 13, the four-machine type pumped energy storage unit 5, the valves 3, 9, 12 and the pressure tank 7. The four-machine pumped water energy storage unit includes an electric motor, a water pump, a water turbine and a generator; the motor is fixedly connected to the transmission shaft of the water pump, and the transmission shaft of the generator is fixed to the water turbine.

[0044] The reservoir 1 is connected to the four-machine pumped energy storage unit 5 through water pipelines 2, 4, 11, 13 and valves 3 and 12, and the four-machine pumped energy storage unit 5 and the air pressure tank 7 are connected th...

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Abstract

The invention discloses a water pumping and compressed air energy storage system and relates to an electric power storage technology. By the system, water is pumped from a reservoir to a pressure tank through a water pump, and air in the pressure tank is compressed, so that electric energy is converted into internal energy of air to be stored in a valley period; and water is pumped out by high pressure air in the pressure tank, drives a water turbine through a water pipeline and drives a generator to generate electricity in a peak period. According to the system, work characteristics of the pressure tank are utilized, and the water pumping energy storage and compressed air energy storage system is miniaturized, so that the problem that a large scale water pumping energy storage system and the traditional compressed air energy storage system depend on geographical conditions is solved. Meanwhile, the water pumping and compressed air energy storage system has the characteristics of low manufacturing cost, no limitation to energy storage period, suitability for different power sources, environment friendliness and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of electric power storage, in particular to a pumped compressed air energy storage system. Background technique [0002] For a long time, in order to meet the ever-increasing power load requirements, the power sector has to build power generation capacity according to the maximum load requirements. On the one hand, this has caused a large amount of surplus and waste of power generation capacity; on the other hand, the power sector has to limit power consumption during peak hours. Therefore, there is an urgent need for an economical, stable, reliable, and efficient power storage system to match it and improve the situation where the peak-to-valley difference in system load is too large. Especially for nuclear power plants and other power systems that can only operate at high levels, the demand for power energy storage systems is even more urgent. More importantly, the power energy storage system is an effec...

Claims

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Application Information

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IPC IPC(8): F03B13/00F03B13/06
CPCY02E60/17Y02E10/22Y02E10/20Y02E60/16
Inventor 陈海生严晓辉张雪辉孟爱红谭春青
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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