Improved real time measurement of amplitude and frequency deviations in power systems to ensure the traceability of synchrophasors

Abstract

Traceability of synchrophasors may be constrained to the measurement of reduced variations of frequency and amplitude; if the combined effects of amplitude or frequency modulation on the measurement results are not correctly ascertained. An improved technique is proposed in this work for the real-time measurement of simultaneous deviations of frequency and voltage amplitude at a given node in a power system. Knowledge of the instantaneous value of the amplitude and frequency in a power system provides an enhanced capability for monitoring of dynamic failures of the system allowing taking corrective actions from their inception.