Skrjanc, T; Herman, L; Ritzmann, D; Wright, P; Li, Y; Rudez, U (2025) The Importance of Reviving Local Frequency Responses in Electric Power Systems. In: 2025 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), 20-23 October 2025, Valletta, Malta.

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Abstract

The increasing integration of converter interfaced generation is reshaping frequency dynamics in electric power systems, reducing the effectiveness of traditional system-wide inertia metrics. This paper emphasizes the need to revive the concept of local frequency response, which becomes increasingly relevant as frequency behavior varies significantly across the network following disturbances. A theoretical radial network model is used to illustrate how frequency deviations emerge and propagate across the system, depending on electrical proximity and system topology. A method for constructing rate-of-change-of-frequency maps is proposed to identify areas vulnerable to critical frequency excursions. Two case studies, one based on the Slovenian electric power system and another on a real incident in Great Britain, demonstrate the need to monitor and manage frequency behavior at the local level. The findings highlight the urgency of reviving local frequency response concepts in planning, monitoring, and control as power systems transition toward low-inertia operation.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	Electromagnetics > Electrical Measurement
Divisions:	Electromagnetic & Electrochemical Technologies
Publisher:	IEEE
Identification number/DOI:	10.1109/ISGTEurope64741.2025.11305595
Last Modified:	18 Sep 2026 13:30
URI:	https://eprintspublications.npl.co.uk/id/eprint/10539