Compressed air energy storage device with heating function and method for operating compressed air energy storage device

Abstract

The invention relates to the field of new energy sources and compressed air energy storage, in particular to a compressed air energy storage device with a heating function and a method for operating the compressed air energy storage device. The compressed air energy storage device is characterized in that a pressure vessel is directly connected with a high-pressure air storage tank by a top pipeline; the pressure vessel is connected with a cold water pool by a bottom pipeline via a hydraulic device; the pressure vessel is connected with an external liquid source by the bottom pipeline via a preheater and a liquid shifting pump; a heat exchanger is arranged on the inner upper portion of the pressure vessel, a liquid circulating pump is arranged on the lower portion of the pressure vessel and is connected with an inlet of the heat exchanger by a liquid pipeline, and an outlet of the heat exchanger extends to the lower portion of the pressure vessel via the liquid pipeline. The compressed air energy storage device has an energy storage operating mode and a power generation operating mode. Air can be compressed by the compressed air energy storage device in the energy storage working mode, and heat released in compression procedures can be used for heating; the air is expanded when the compressed air energy storage device is in the power generation working mode, and the compressed air energy storage device can be driven to generate power. The compressed air energy storage device and the method have the advantages that the wind power dissipation and storage capacity can be improved, and heating pressures can be relieved.

Description

technical field [0001] The invention relates to the fields of new energy and compressed air energy storage, in particular to a compressed air energy storage device and an operating method that can be used for heating. Background technique [0002] The heating period in northern my country is relatively long in winter. In order to ensure the heating of residents, wind power has to "give way" for thermal power to protect people's livelihood. Therefore, the phenomenon of wind abandonment in winter is serious, and the average utilization hours of wind power is lower than the national value. It is confirmed that the focus will be on realizing the local consumption of wind power, and that the emphasis will be shifted from pure development to development and utilization, and one of the goals will be to transform abandoned wind resources into a characteristic growth point that stimulates local economic development. In addition, wind power has now become recognized as a clean energy ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the heating period in winter, the invention proposes a compressed air energy storage device and an operation method for heating that can not only improve the capacity of wind power consumption but also alleviate the pressure of heating in order to solve the problems of severe wind abandonment and high heating pressure in winter

Images