Abstract
Electricity plays a crucial role in the well-being of humans and is a determining factor of the economic development of a country. Electricity issues have encouraged researchers to focus on improving power availability and quality along with reliability. This pursuit has increasingly raised the intention to integrate renewable energy (RE) into power systems to curb the problem of energy deficiency. However, intermittency in the sources of RE supply coupled with fluctuating changes in demand with respect to time has induced high risk in maintaining system reliability in terms of providing adequate supply to consumers. Whilst an energy storage system (ESS) is not another source of electricity, it is proven to be effective and viable in solving the aforementioned issues. Thus, this paper comprehensively reviews the development of ESS technologies and discusses the benefits and real-life applications of these technologies. The concept of reliability in power systems is also explored to provide an improved understanding of this study. Lastly, notable studies that have addressed the reliability impact of ESSs on power systems are discussed. This review paper therefore is expected to provide a critical analysis of ESS developments, as well as recognize their research gaps in terms of reliability studies in modern RE-integrated power networks.
Highlights
Sustainable development is currently a crucial issue globally
We select 54 related articles, which we further classify in accordance accordance with the type of energy source integrated with energy storage system (ESS)
This paper presents a comprehensive review on the development of ESS technologies and their applications
Summary
Sustainable development is currently a crucial issue globally. The most common and simplest definition of sustainable development is “development that meets the needs of the present without compromising the ability of future generations to meet their own needs” [1]. The ESS will dispatch its stored energy during low energy production of RE, and will help store excess energy when power production is high Apart from supporting this type of generation, ESSs can mitigate some issues in the conventional generation sector, such as peak shaving and energy arbitrage [10,11]. An ESS is a flexible power electronic device that supports the grid in providing a constant supply whilst satisfying power quality and reliability [12,13]. In the electric utility industry, power outage is the main concern because consumers are expecting a continuous ready supply throughout the year This ready supply is termed as “reliability”, which is further defined as the reliability of a power system to provide adequate output to consumers, as discussed in [14].
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