Minimum size of compressed air energy storage

What is compressed air energy storage?

Compressed air energy storage (CAES) is one of the many energy storage options that can store electric energy in the form of potential energy (compressed air) and can be deployed near central power plants or distribution centers. In response to demand, the stored energy can be discharged by expanding the stored air with a turboexpander generator.

Where will compressed air be stored?

In a Compressed Air Energy Storage system, the compressed air is stored in an underground aquifer. Wind energy is used to compress the air, along with available off-peak power. The plant configuration is for 200MW of CAES generating capacity, with 100MW of wind energy.

What are the different types of compressed air energy storage systems?

Regardless of size, traditional compressed air energy storage (CAES) systems can be classified based on the compression method into three main categories: diabatic (D-CAES), adiabatic (A-CAES), and isothermal (I-CAES) systems. D-CAES systems dissipate the heat generated during compression into the environment.

How is energy stored in a low demand space?

In low demand periods, energy is stored by compressing air in an air tight space (typically 4.0~8.0 MPa) such as an underground storage cavern. To store energy, air is compressed and sealed in the space. To extract the stored energy, compressed air is drawn from the storage vessel, mixed with fuel, and then combusted. The expanded air is then passed through a turbine.

Is a second-generation compressed air energy storage system dynamically safe?

Dynamic safe operation up to 50 g/s air at 80 kW with no TOT peaks. The aim of this paper is the dynamic analysis of a small-size second-generation Compressed Air Energy Storage (CAES) system. It consists of a recuperated T100 micro gas turbine, an intercooled two-stage reciprocating compressor and an artificial tank for air storage.

Why does compressed air storage system need to be improved?

However, due to the characteristics of compressed air storage system, the heating and cooling energy can not be constantly produced. So the system needs to be improved to meet the continuous heating / cooling requirements of users.