Analysis of power characteristics of energy storage system

What is an energy storage system (ESS)?

ESSs refers to a collection of devices or equipment that can store electric energy through physical or chemical means and convert it back into electricity when required. Advances in technology and theory have resulted in the development of ESSs from a simple energy storage device to a valuable contributor to power system operations.

Why are energy storage systems important?

Due to the intermittent nature of renewable energy sources, modern power systems face great challenges across generation, network and demand side. Energy storage systems are recognised as indispensable technologies due to their energy time shift ability and diverse range of technologies, enabling them to effectively cope with these changes.

Can energy storage system be a part of power system?

The purpose of this study is to investigate potential solutions for the modelling and simulation of the energy storage system as a part of power system by comprehensively reviewing the state-of-the-art technology in energy storage system modelling methods and power system simulation methods.

How energy storage systems help power system decision makers?

The issues pertaining to system security, stability, output power fluctuations of renewable energy resources, reliability and energy transfer difficulties are the most critical ones. The energy storage systems (ESSs) are one of the available equipment that can help power system decision makers to solve these challenges.

What is a physical based model of energy storage systems?

For example, the physical-based modelling method of mechanical energy storage systems mainly utilise theories in mechanics, thermodynamics or fluid dynamics. The mathematical equations governing components with strong correlations are amalgamated to build the model [, , ].

What are the different types of energy storage systems?

As shown in Fig. 1, ESSs can be broadly classified into three types based on the form of stored energy: mechanical, electrochemical and electromagnetic. Each type possesses unique characteristics related to power, installed capacity, response time, life span and cost . Fig. 1. Types of energy storage systems.