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Power generation energy storage method and system

A technology of an energy storage system and an energy storage method, which is applied in the field of gas energy storage, can solve problems such as the decline of high-pressure air working ability and system efficiency, and achieve the effect of meeting the requirements of process design, improving system efficiency, and improving working ability

Inactive Publication Date: 2019-12-13
HUNAN KUANGCHU TECH CO LTD
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  • Abstract
  • Description
  • Claims
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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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  • Power generation energy storage method and system
  • Power generation energy storage method and system
  • Power generation energy storage method and system

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Embodiment Construction

[0035] 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.

[0036] Such as 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.

[0037] Such as figure 2 The electrolysis subsystem shown includes: an electrolyzer and a storage module. The electrolysis module electrolyzes the water in it into hydrogen and oxy...

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Abstract

The invention relates to a power generation energy storage method and system. The method comprises the following steps of electrolyzing water to obtain a hydrogen-water mixture gas; inputting the hydrogen-water mixture gas into an expansion machine module, performing expansion acting for power generation, and storing residual energy, wherein the expansion machine module comprises at least one expander. According to the method and the system, multi-stage expansion is adopted, the acting capacity of expansion units can be increased, and the comprehensive efficiency of the system is improved; andmeanwhile, multi-stage expansion can realize high-pressure ratio expansion, and thus pressure energy in air can be fully released.

Description

technical field [0001] The invention relates to the field of gas energy storage, in particular to a power generation and energy storage method and system. 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 during the low l...

Claims

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Application Information

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IPC IPC(8): F01K7/02F01K27/00F28D20/00C25B1/04
CPCC25B1/04F01K7/02F01K27/00F28D20/003Y02E60/14Y02E60/36Y02E70/30
Inventor 范竞敏肖坤坚
Owner HUNAN KUANGCHU TECH CO LTD
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