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Multi-stage power generation energy storage method and system

A technology of energy storage system and energy storage method, which is applied in electrolysis process, electrolysis components, machine/engine, etc., can solve the problems of high-pressure air working ability reduction and system efficiency reduction, so as to meet the requirements of process design and improve system efficiency , Improve power generation efficiency and energy storage effect

Pending Publication Date: 2020-01-14
HUNAN KUANGCHU TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the use of the throttle valve, the work ability of the high-pressure air is reduced, thereby reducing the efficiency of the system

Method used

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  • Multi-stage power generation energy storage method and system
  • Multi-stage power generation energy storage method and system
  • Multi-stage power generation energy storage method and system

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Embodiment Construction

[0039] The present invention will be specifically described below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] like figure 1 As shown, the power generation system of the present invention includes: a multi-stage expander, a heat exchanger, an evaporator, a cryogenic pump, and the like. The heat exchanger is connected to the heat storage system, and the evaporator is connected to the cryogenic pump and the electrolysis subsystem respectively.

[0041] like figure 2 The electrolysis subsystem shown includes: an electrolyzer and a storage module. The electrolysis module electrolyzes the water in it into hydrogen and oxygen th...

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Abstract

The invention relates to a multi-stage power generation energy storage method and system. The method comprises the steps of electrolyzing water to obtain hydrogen-water mixture gas, inputting the hydrogen-water mixture gas into an expander module, performing expansion work power generation and storing residual energy, specifically, the expander module includes at least one expander. By adopting multi-stage expansion, the working capacity of an expansion unit can be increased, and the comprehensive efficiency of the system is improved; meanwhile, multi-stage expansion can realize high pressureratio expansion and fully release pressure energy in air.

Description

technical field [0001] The invention relates to the field of gas energy storage, in particular to a method and system for multi-stage power generation and energy storage. Background technique [0002] Electric power new energy power generation is developing at a high speed. However, due to the randomness, intermittent nature, and anti-peak regulation characteristics of new energy, its large-scale integration into the power grid will bring adverse effects on the safe and stable operation of the system, scheduling, etc., among which the system Insufficient peak shaving capacity has become the main constraint affecting the grid's acceptance of new energy. The use of large-scale energy-based energy storage technology can improve the peak-shaving capability of the power grid. It is an important means to solve the problem of wind power curtailment in the power grid. [0003] Cryogenic liquefied air energy storage technology refers to the use of electric energy for compressed air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/02F01K3/18F01K7/04C25B1/04C25B9/04
CPCF01K7/02F01K3/18F01K7/04C25B1/04C25B9/65Y02E60/36
Inventor 范竞敏肖坤坚
Owner HUNAN KUANGCHU TECH CO LTD
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