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Power generation device and method of liquefied air energy storage system

A technology of liquefied air and energy storage system, which is applied in the direction of steam engine device, machine/engine, mechanical equipment, etc., and can solve the problem of low operating efficiency of the expander

Active Publication Date: 2017-08-18
NORTH CHINA ELECTRICAL POWER RES INST +3
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Problems solved by technology

[0004] The invention proposes a power generation device and method for variable operating conditions of a liquefied air energy storage system to solve the technical problem of low operating efficiency of the expanders at all levels during the load change process of the power grid

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  • Power generation device and method of liquefied air energy storage system
  • Power generation device and method of liquefied air energy storage system
  • Power generation device and method of liquefied air energy storage system

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0055] Air Liquide energy storage technology is to store the abandoned wind and photovoltaics during the low power consumption period, and transmit the electric energy that meets the power frequency requirements to the grid during the peak power consumption period. In the energy storage link, the compressor unit passing through the inter-stage cooler uses abandoned wind, light and low-valley electric energy to generate high-pressure air, and then uses the inter-stage cooler to ...

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Abstract

The invention provides a power generation device and method of a liquefied air energy storage system. The power generation device and method are used for adjusting the output power according to power grid needed power. The device comprises a liquefied air energy storage and gasification part, an expansion unit and a power generation unit, wherein the liquefied air energy storage and gasification part is used for storing liquefied air, heating and gasifying the liquefied air, and outputting gasified air; the expansion unit comprises a plurality of air expansion machines, and output shafts of the multiple expansion machines are connected with SSS clutches and are used for converting energy of the gasified air into mechanical power; and the power generation unit is used for converting the mechanical power into electric energy and outputting the electric energy. By means of the power generation method and device, all stages of expansion machines and corresponding auxiliary machines all stably run nearby rated working condition points in the power grid load change process, the liquefied air energy release and power generation efficiency is improved, and meanwhile, safe and stable running of the units and equipment is guaranteed.

Description

technical field [0001] The invention relates to the technical field of liquefied air energy storage, in particular to a power generation device and method for variable operating conditions of a liquefied air energy storage system. Background technique [0002] Compared with other similar compressed air energy storage technologies, liquid air energy storage (LAES) technology has significant advantages such as low storage pressure, high energy storage density, and no terrain restrictions. Air liquefied air energy storage technology stores abandoned wind and photovoltaics during the low power consumption period, and transmits electric energy that meets the power frequency requirements to the grid during the peak period of power consumption, which not only solves the problem of mismatching supply and demand of new energy power generation, but also solves other problems. The impact of inherent grid-connected characteristics on the grid. [0003] Although the liquefied air energy...

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Application Information

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IPC IPC(8): F01K13/02F01K25/08F01K7/02
CPCF01K7/02F01K13/02F01K25/08
Inventor 王维萌黄葆华宋亚军徐桂芝司派友刘双白左川梅隆张德利任彦
Owner NORTH CHINA ELECTRICAL POWER RES INST
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