Energy flexibility of battery electricity storage system: design, commissioning and application

K.F.M. de Bont, Michiel Voerman, W. Zeiler

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Given the increasing use of (de)centralized renewable energy, there is a growing need for flexibility to handle the uncertainty of the renewable energy supply. Flexibility is a strategy which describes the ability of a system to handle and respond to changing requirements. In view of the grid environment, power system flexibility can be defined as systems with the ability to continuality balance the electricity supply and demand in cost effective way, while maintaining the required services towards grid connected loads. Building energy flexibility forms part of the Demand Side Flexibility (DSF) category. Buildings offer DSF by decreasing energy demand or supply energy during peak periods. Integration of Battery Energy Storage Systems (BESS) increases the DSF opportunities and in combination with active controllable loads can handle on-side disturbances, beforehand the electrical flow will influence
power grid operations. In this study an office building integrated BESS is designed, developed, built and commissioned in order to test Smart Grid
facilitating Demand Side Management (DSM) strategies. Studies emphasize two important issues in successful integration of BESS: energy efficiency
and battery degradation. A good understanding of the BESS characteristics is therefore crucial and assessment of the BESS performance under variable charge rate (current) and Depth of Discharge (DoD) of the batteries is needed. The second part of this study describes the BESS as an application for control strategies towards the Smart Grid. A BESS software agent is designed that respond to the day-ahead electricity pricing and building energy demand and schedules the battery discharge profile. To conclude, the agent is able to: communicate between different parties with the use of JSON, it can use forecasted building energy demand data and schedules the load output in an iterative process.
Original languageEnglish
Title of host publicationProceedings ASHRAE annual conference 2018
Number of pages9
Publication statusPublished - 23 Jun 2018
EventASHRAE Annual conference 2018 - Hilton Americas hotel and the George R. Brown Convention Center., Houston, United States
Duration: 23 Jun 201827 Jun 2018


ConferenceASHRAE Annual conference 2018
Country/TerritoryUnited States


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