March 2026

Conference Paper

Comparative Analysis of Inter-Area Oscillations in the US Eastern and Western Interconnections

By:
Fu, Hao; Yu, Wenpeng; Olama, Mohammed M; Bhusal, Narayan ; Yadav, Ajay P; Stenvig, Nils M; Liu, Yilu
Page Number:
1-6
Book Title:
2025 IEEE Kansas Power and Energy Conference (KPEC)
Publication Date:
March 12, 2026
Publisher Location:
IEEE, New Jersey, United States of America
Conference Name:
The 57th North American Power Symposium (NAPS 2025)
Conference Location:
Hartford, Connecticut, United States of America
Conference Sponsor:
IEEE
View DOI Listing:
https://doi.org/10.1109/KPEC65465.2025.11045014

Abstract

This paper presents a comparative analysis of interarea oscillations in the US Eastern and Western Interconnections using frequency disturbance data collected from the advanced wide-area Frequency Monitoring Network (FNET/GridEye), enabling us to investigate and compare the oscillation characteristics of both regions. The study analyzes the statistical data from the two interconnections, including total oscillation events, average dominant frequencies, damping ratios, and maximum amplitudes. We also explore the impact of seasonal and daily variations on oscillation occurrences and the influence of different grid topologies and operational practices. The results provide insights into both interconnections' stability and control characteristics, offering valuable information for power system operators to enhance grid stability and oscillation suppression measures.