Steam-driven liquid compressed air energy storage peak regulation system based on low-pressure cylinder zero-output technology

A compressed air energy storage, low-pressure cylinder technology, applied in the direction of steam accumulator, steam engine device, liquid variable capacity machinery, etc. The effect of improving the power output regulation ability and meeting the demand of power supply load

Pending Publication Date: 2020-12-11
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low-pressure cylinder zero output technology needs to bypass a large amount of steam, so it is only applicable to cogeneration units, and cannot be applied in the flexible transformation of pure condensing units

Method used

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  • Steam-driven liquid compressed air energy storage peak regulation system based on low-pressure cylinder zero-output technology

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0020] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses a steam-driven liquid compressed air energy storage peak regulation system based on a low-pressure cylinder zero-output technology, which implements the peak regulation operation of a unit by means of coupling between a low-pressure cylinder zero-output system and a liquid compressed air energy storage system. Steam of the unit is used for driving a steam turbine to drive an air compressor of the energy storage system to operate to implement transmission of steam energy between a thermal power unit and the liquid compressed air energy storage system, so that the power output adjustment capacity of the unit is improved, and th peak regulation requirement of a power grid is met. The operation energy efficiency of the whole system is improved. When the dispatching loadof the power grid is reduced, by changing a steam flow of an outlet of a medium-pressure cylinder, steam is adopted for driving the steam turbine to drive the air compressor of the liquid compressedair energy storage system to operate to complete the energy storage process so as to implement reasonable consumption of steam energy, so that the working share of a low-pressure cylinder is reduced,and the power generation output of the unit is reduced. When the dispatching load of the power grid rises, the liquid compressed air energy storage system releases energy to generate electricity so asto meet the power supply load requirement.

Description

【Technical field】 [0001] The invention belongs to the technical field of thermal energy comprehensive utilization, and relates to a steam-driven liquid compressed air energy storage peak-shaving system based on low-pressure cylinder zero output technology. 【Background technique】 [0002] In recent years, in response to the gradual depletion of fossil fuels and the environmental problems caused by them, renewable energy power generation represented by wind energy and solar energy has developed rapidly. The large-scale integration of renewable energy power generation with volatility and randomness will further increase the demand for peak regulation of traditional thermal power units. [0003] At present, the technologies for improving the electric output adjustment capability of thermal power units mainly include electric boiler heat storage technology, water tank heat storage technology, low-pressure cylinder zero output technology, and electrochemical energy storage technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/16F01K7/30F01K7/02F01D15/10F01D15/08F04B35/02F04B41/02F01K1/04F01K3/14F01B23/10
CPCF01B23/10F01D15/08F01D15/10F01K1/04F01K3/14F01K7/02F01K7/16F01K7/165F01K7/30F04B35/006F04B41/02Y02E60/16
Inventor 居文平王妍马汀山吕凯张建元黄嘉驷王春燕林轶郑天帅杨利刘学亮王东晔
Owner XIAN THERMAL POWER RES INST CO LTD
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