An overview on short and long-term response energy storage devices for power systems applications

Abstract

Energy storage devices provide valuable benefits to improve stability, power quality and reliability of supply. Storage technologies have developed significantly in order to meet the challenges of practical power systems applications. Energy storage devices can be classified into short and longterm response, depending on their application. Technologies with high power density and with the ability to respond to the requests in short time fractions like flywheels, capacitors or superconducting magnetic coils belong to the so-called shortterm response energy storage devices category. Energy storage devices with the capability to absorb and supply electrical energy for long periods of time like pumping hydro, batteries, compressed air and hydrogen fuel cells are considered in the long-term response category. This paper concentrates on the latest short and long-term energy storage technology developments, performance analysis, and cost considerations.