Sizing of hybrid energy storage through analysis of load profile characteristics: A household case study

• Published in: Journal of energy storage 2022-08, Vol.52, p.104768, Article 104768
• Main Authors: Schaefer, E.W., Hoogsteen, G., Hurink, J.L., van Leeuwen, R.P.
• Format: Article
• Language: English
• Subjects: Frequency based splitting; Hybrid energy storage; Residential; Storage sizing
• ISSN: 2352-152X; 2352-1538
• DOI: 10.1016/j.est.2022.104768

Hybrid Energy Storage System (HESS) have the potential to offer better flexibility to a grid than any single energy storage solution. However, sizing a HESS is challenging, as the required capacity, power and ramp rates for a given application are difficult to derive. This paper proposes a method for splitting a given load profile into several storage technology independent sub-profiles, such that each of the sub-profiles leads to its own requirements. This method can be used to gain preliminary insight into HESS requirements before a choice is made for specific storage technologies. To test the method, a household case is investigated using the derived methodology, and storage requirements are found, which can then be used to derive concrete storage technologies for the HESS of the household. Adding a HESS to the household case reduces the maximum import power from the connected grid by approximately 7000 W and the maximum exported power to the connected grid by approximately 1000 W. It is concluded that the method is particularly suitable for data sets with a high granularity and many data points. •Load profiles can be split into sub-profiles to find hybrid storage requirements.•An easy and fast way for preliminary investigation of storage sizing.•No storage technologies are considered which widens the search space.•For a residence, higher granularity of load profile data is preferred.