Statistical approach to deadband estimation to inform TESS energy specification

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Abstract

The increasing use of renewable energy and decreasing inertia from large generators necessitate studying Transient Energy Storage Systems (TESSs) for better frequency stability. This paper examines UK National Grid data from 2014 to 2022 to propose initial design requirements for a TESS power-train. It assesses second-by-second historical frequency data across various time frames to explore the impact on TESS sizing and strategies using the Enhanced Frequency Response (EFR) service 1 approach. The results establish an approach for determining the suitable battery energy capacity of TESSs offering frequency control services, contributing to the reduction of power demand and energy losses in the distribution grid. Moreover, the study presents a suitable deadband strategy for the EFR service. The findings provide insights into the design and operational needs of TESSs in supporting grid frequency response, utilizing a statistical methodology driven by frequency data from the UK transmission network managed by NGET. The primary aims of the paper are (a) to develop a suitable power and energy management philosophy for TESSs and thus inform future control objectives, and (b) assess the system energy specification requirements.
Original languageEnglish
Article numbere13183
Number of pages11
JournalIET Renewable Power Generation
Volume19
Issue number1
DOIs
Publication statusPublished - 1 Jan 2025

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