Simulation of the principle of compressed air energy storage equipment

What is compressed air energy storage (CAES)?

Compressed air energy storage (CAES) technology has received widespread attention due to its advantages of large scale, low cost and less pollution. However, only mechanical and thermal dynamics are considered in the current dynamic models of the CAES system. The modeling approaches are relatively homogeneous.

What is CAES system model simulation?

The compressed air energy storage (CAES) system is a very complex system with multi-time-scale physical processes. Following the development of computational technologies, research on CAES system model simulation is becoming more and more important for resolving challenges in system pre-design, optimization, control and implementation.

What is a model of compressed energy storage process?

A model of the compressed energy storage process considering inlet guide vane angle control, outlet throttle control, and speed control has been established. A model for the expansion power generation process considering inlet throttle control, nozzle angle control, and speed control has been established.

Is adiabatic compressed air energy storage efficient?

An adiabatic compressed air energy storage system with thermal storage was studied. The dynamic behaviour of the system is evaluated using an algebraic/differential model. The link between components and system performance is elucidated. The round trip efficiency reaches 70% when thermal storage efficiency is 95%.

What is AA-CAES dynamic simulation model?

Unlike the CAES system with simple dynamic characteristics, this paper considers heat transfer delay, volume inertia, electromechanical transient, gas storage and heat storage processes, and establishes an AA-CAES dynamic simulation model that reflects multiple time-scale dynamic characteristics.

How does a CAES compressor work?

In charging mode, a CAES compressor driven by an elec-trical motor pressurizes the air at ambient conditions, which is carried through pipes, cooled down in intercoolers and an aftercooler, and stored in the cavern . As the air is injected, the internal pressure of the reservoir and its potential energy increases.