Analysis and Design of Battery Energy Storage System for a Commercial Building in Dubai

The grid-connected distributed energy resources (DERs) received significant attention in recent years due to the technical and economic benefits they bring to the grid such as increased energy efficiency, improved grid reliability, increased resiliency and flexibility, reduced cost of energy generation, and decreased carbon dioxide (CO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>) emission. This paper presents a methodology to analyze and design a battery energy storage (BES) system for a commercial building in Dubai. The commercial site is equipped with solar photovoltaic (PV) system and building load power demand (LPD). The objective of this study is to model the DERs and their impact on the supplying power to the building LPD, propose a methodology for the sizing of a suitable BES, and design an energy management system (EMS) to manage the DERs by reducing the energy consumed from the grid. In this study, the DERs are modelled at the system level rather than the component level. This would be sufficient for the purpose of this analysis producing the energy cost savings, CO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> emission, and the energy demand reduction. Then, the BES sizing and economic assessment modelling has been developed to estimate its impact on the energy saving cost when managed in coordination with the site DERs. Finally, an EMS has been proposed with multiple modes-of-control. This EMS has shown to provide significant benefits to the grid and also to the commercial site. One year of historical real-time data of weather and building LPD have been used to demonstrate the benefits of these DERs to the grid and the site.