Advanced liquefied compressed air energy storage peak regulation system and method

Abstract

The invention discloses an advanced liquefied compressed air energy storage peak regulation system and method. The peak regulation system comprises a compression heat storage system, a refrigeration liquefaction and energy storage system and a heating expansion power generation system, wherein an outlet of a condenser in the compression heat storage system is in communication with a heat release side inlet of a cold storage tank in the refrigeration liquefaction and energy storage system, a gas outlet in the top of the cold storage tank in the refrigeration liquefaction and energy storage system is in communication with an inlet of the compression heat storage system, an outlet of a heat storage tank in the compression heat storage system is in communication with an inlet of the heating expansion power generation system, and a heat absorption side outlet of the cold storage tank in the refrigeration liquefaction and energy storage system is in communication with an inlet of the heating expansion power generation system. The peak regulation system and method can meet the requirements of power supply side energy storage and deep peak regulation and have the advantages of high safety and economical efficiency.

Description

technical field [0001] The invention belongs to the field of power supply side deep peak regulation and compressed air energy storage, and relates to an advanced liquefied compressed air energy storage peak regulation system and method. Background technique [0002] In order to cope with global climate change, it is necessary to vigorously promote the energy saving and emission reduction of thermal power units and the rapid development of new energy. And a large number of "uncertain" new energy power grid connection will force the basic energy power generation based on thermal power units to fully participate in deep peak regulation. In response to the transformation of the development model of thermal power units, the state and local governments have successively issued subsidy policies for deep peak-shaving electricity prices on the power supply side, which has greatly increased the enthusiasm for deep peak-shaving units on the power supply side. At present, the power sup...

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Problems solved by technology

[0003] At present, domestic and foreign researches on deep peak regulation on the power supply side are very active. At the same time, the flexibility technology of thermal power units can be roughly divided into two categories: one is the low-load stable combustion on the boiler side and the low-pressure cylinder removal technology on the steam turbine side (boilers and steam turbines have been in the Extremely low-load operation and frequent switching between high and low loads, poor equipment safety and economy); the second is thermal power unit coupling hot water tank and electric-grade boiler heat storage technology (only applicable to winter heating period, and high-grade electric energy is used for heating water, less economical)

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