Monitoring of Interarea Oscillation Mode by Synchronized Phasor Measurement

Abstract

There is a low-frequency interarea oscillation mode in middle and western 60-Hz areas of Japan. Its stability determines available transfer capacity of a tie-line. We propose a method of monitoring its stability by phasor measurements synchronized using the global positioning system. The phase angle between two places deviates randomly. However, its Fourier spectrum shows a clear peak corresponding to the interarea mode. We estimate its frequency and damping from the spectrum. The estimation results agree well with those obtained by curve fitting for large disturbances. It is also possible to estimate the eigenvector. We examine how the eigenvalue varies with the total generation and power flow in the areas.

Comparative review of methods for stability monitoring in electrical power systems and vibrating structures

“…The first method under this group is Second Order Frequency Regression (SOFR) that was applied in [25].…”

Predicting measurements at unobserved locations in an electrical transmission system

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Implementation of a Massively Parallel Dynamic Security Assessment Platform for Large-Scale Grids

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