Transcritical carbon dioxide energy storage coupling steam turbine power generation peak shaving system and operation method

A technology of carbon dioxide and steam turbines, which is applied in the direction of steam engine devices, machines/engines, mechanical equipment, etc., can solve problems such as the difficulty of low-temperature liquid storage, reduce the difficulty of liquefaction, increase energy storage density, good fluidity and transmission characteristics Effect

Pending Publication Date: 2022-01-11
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a transcritical carbon dioxide energy storage coupled stea

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  • Transcritical carbon dioxide energy storage coupling steam turbine power generation peak shaving system and operation method

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[0028] The present invention is described in further detail below in conjunction with accompanying drawing:

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance; in addition, unless otherwise Clearly stipulated and limited, the terms "installation"...

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Abstract

The invention discloses a transcritical carbon dioxide energy storage coupling steam turbine power generation peak shaving system and an operation method. The transcritical carbon dioxide energy storage coupling steam turbine power generation peak shaving system comprises a steam turbine steam cycle power generation system and a transcritical carbon dioxide energy storage system, energy storage compression heat in the transcritical carbon dioxide energy storage system is used for heating condensed water, high-temperature and high-pressure steam is used for heating high-pressure and low-temperature carbon dioxide in the energy release stage, the situation that a heat accumulator is used for collecting compression heat to heat the carbon dioxide in the energy release stage is avoided, and the economical efficiency of a unit is improved. According to the system, air is replaced with the carbon dioxide, the critical temperature of the carbon dioxide is 31.1 DEG C, liquid storage can be achieved at the normal temperature, the liquefaction difficulty is greatly reduced, meanwhile, the density of supercritical carbon dioxide is close to that of liquid, the viscosity of supercritical carbon dioxide is close to that of gas, and the supercritical carbon dioxide has good fluidity and transmission characteristics; and the supercritical carbon dioxide is used for replacing air as an energy storage medium, the energy storage density is greatly improved, the scale of a storage system is remarkably reduced, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of physical energy storage, and in particular relates to a transcritical carbon dioxide energy storage coupled steam turbine power generation peak regulation system and an operating method. Background technique [0002] With the continuous utilization of energy, the large-scale application of new energy and the large-scale grid connection of intermittent renewable energy, many energy application problems have also emerged. The application of energy storage technology is an effective way to solve the above problems. Energy storage technology can assist the dynamic operation of traditional power generation systems, help renewable energy to cut peaks and fill valleys, and track planned output. At present, there are only two large-scale energy storage technologies that can be maturely applied in the world: pumped hydro storage and compressed air energy storage. Steam turbine technology, supplemental combustion ...

Claims

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Application Information

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IPC IPC(8): F01K11/02F01K25/10F01K23/02F01D15/10
CPCF01K11/02F01K25/103F01K23/02F01D15/10
Inventor 杨珍帅万超荆涛韩立邹洋李高潮贾明晓王明勇
Owner XIAN THERMAL POWER RES INST CO LTD
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