Techno–economic Potential of Battery Energy Storage Systems in Frequency Response and Balancing Mechanism Actions

Desen Kirli, Aristides Kiprakis

Research output: Contribution to journalArticlepeer-review

Abstract

Batteries offer a combination of balancing and regulation services within a smart grid to improve its resilience and flexibility. Maintaining an acceptable state of health and the highest rate of return requires dynamic modelling of the asset and rigorous optimisation. We compare the technical cost and economic benefit of battery employment in dynamic frequency and balancing mechanism actions in a smart grid. We use the services procured by National Grid in the UK as a case study but the methodology is globally applicable, including developing grid infrastructures. Our methodology yields the most optimum scenario of service participation, accounting for the dynamic degradation and considering variable pricing of electricity throughout the day.

Additionally, it advises the most optimal despatch schedule and price declarations for the battery over the course a day and a year, employing Particle Swarm Optimisation algorithm and historic data. Our results demonstrate that ordinarily frequency response is preferred due to its lower technical toll and payments for availability rather than despatch. However, the proposed despatch schedule including both services provides the highest profit. We anticipate this methodology to become the basis for more sophisticated battery models that integrate the service despatch optimisation, dynamic lifetime degradation and economic analysis.
Original languageEnglish
Number of pages10
JournalJournal of Engineering
Early online date26 May 2020
DOIs
Publication statusE-pub ahead of print - 26 May 2020

Keywords

  • smart grid
  • energy storage
  • Batteries
  • Frequency response

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