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Compressed air storage power generation device and compressed air storage power generation method

A technology for compressed air and power generation devices, applied in jet propulsion devices, gas turbine devices, engine control and other directions, can solve problems such as not meeting operating conditions, unable to respond to charging instructions, unable to respond to discharge instructions, etc., to achieve the effect of improving operation efficiency

Active Publication Date: 2020-05-05
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of only operating according to the normal charge and discharge commands, the operating conditions within the optimal SOC range may not be satisfied
In addition, if the compressed air accumulated in the pressure accumulator tank is used up, it cannot respond to a new discharge command, and if the pressure accumulator tank is fully filled with compressed air, it cannot respond to a new charge command.

Method used

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  • Compressed air storage power generation device and compressed air storage power generation method
  • Compressed air storage power generation device and compressed air storage power generation method
  • Compressed air storage power generation device and compressed air storage power generation method

Examples

Experimental program
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Effect test

no. 1 Embodiment approach ）

[0031] figure 1 It is a schematic configuration diagram of a compressed air storage (CAES: compressed air energy storage) power generation device 2 . The CAES power generation device 2 smoothes the power supplied from a power station 6 using renewable energy such as a wind power station or a solar power station through a power receiving and transmitting device 8, and outputs power to a power system 4 of a demand target. The electrical equipment 8 is constituted by a transformer or the like.

[0032] refer to figure 1 , the structure of the CAES power generation device 2 will be described.

[0033] The CAES power generator 2 includes an air path indicated by a dotted line and a heat medium path indicated by a solid line. The air path mainly includes a compressor 10 , a first accumulator tank (first accumulator unit) 12 , and an expander 14 , and these devices are fluidly connected by air pipes 16 a to 16 d , and air flows therein. The heat medium path mainly includes a firs...

no. 2 Embodiment approach ）

[0054] image 3 It is a schematic configuration diagram of the CAES power generation device 2 of the second embodiment. The CAES power generation device 2 of the present embodiment is concerned with the structure and the figure 1The first embodiment is substantially the same. Therefore, with regard to figure 1 The description of the same part of the shown structure is omitted.

[0055] In the present embodiment, the discharge port 10b of the compressor 10 is fluidly connected to the first accumulator tank 12 and the second accumulator tank 44 through the air pipe 16b. When the compressor 10 is driven by the motor 30 , air is supplied from the intake port 10 a, compressed and discharged from the discharge port 10 b, and the compressed air is pressure-fed to the first accumulator tank 12 and the second accumulator tank 44 . Valves 45a, 45b for allowing or blocking the flow of compressed air are respectively provided in the air piping 16b extending from the compressor 10 to t...

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Abstract

In the present invention, the compressed air storage power generation device (2) includes: a compressor (10), mechanically connected to the motor (30); a first pressure accumulator tank (12), which stores the compressed air from the compressor (10) The expander (14) is driven by compressed air from the tank (12); the generator (28) is mechanically connected to the expander (14); heat exchange between the compressed air supplied from the tank (10) to the tank (12); the second heat exchanger (22), between the heat medium and the compressed air supplied from the tank (12) to the expander (14) performing heat exchange; a pressure sensor (13) detecting the SOC of the tank (12); an SOC adjustment unit (17, 34a, 34b, 34c) adjusting the SOC; and a control device (40). The control device (40) controls the SOC adjustment unit (17, 34a, 34b, 34c) so that the required power is satisfied and the detected SOC is within the optimum SOC range. In this way, in the compressed air storage power generation device (2), the SOC is controlled to be within the optimum SOC range, so that the operating efficiency can be improved.

Description

technical field [0001] The invention relates to a compressed air storage power generation device and a compressed air storage power generation method. Background technique [0002] As a technique for smoothing the output of power generation using unstable energy that fluctuates irregularly, such as renewable energy, a storage battery is a representative device that stores electricity when surplus generated power is generated, Compensate for electricity when insufficient. As examples of large-capacity storage batteries, sodium-sulfur batteries, redox flow batteries, lithium storage batteries, lead storage batteries, and the like are known. These batteries are all chemical secondary batteries, which can only output the stored energy in the form of electricity. [0003] In addition, as other smoothing equipment, a technique called compressed air storage (CAES) is known, which discharges electricity from the compressor instead of electricity when surplus generated electricity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C6/16
CPCF02C9/16F05D2270/20F05D2270/301F02C6/16F05D2260/213Y02E60/16F28D2020/0065
Inventor 佐藤隆松隈正树猿田浩树坂本佳直美
Owner KOBE STEEL LTD