Design and Implementation of Pumped-Hydro-Compressed-Air Energy Storage System

Abstract

The need for bulk energy storage systems has
arisen due to the unreliable nature of the alternate energy
generation. Currently, two energy storage systems are being
employed around the world for bulk power storage, which
are Pumped-hydro energy storage (PHES) and compressedair
energy storage (CAES) systems. But, due to their
dependency on geographical location, these two systems
cannot be used with all power generation systems. Another
the system has recently been introduced that combines the
advantages of both PHES and CAES system known as
Pumped-hydro-compressed-air (PHCA). The main
advantage of the PHCA system over the other two is
independence from the specific geographical locations and
compactness.
In this paper, the working model of the PHCA system is
designed that stores the potential energy in the form of
water and air pressure; the water is stored at the pressure
of 500 psi. The PHCA storage system starts generating the
power during outages and power variations in the main
generation system. The working model of the PHCA system
confirms that the idea of PHCA is very practical and can be
used in various power