Redundancy and Synchronization Improvement for Prevailing Phase Angle Estimation and Flicker Source location

Abstract

The deployment of renewable energy sources increases fluctuating power infeed of harmonics, flicker and unbalance caused by inverters and non-linear loads. The complexity of the power structure requires the measurement of voltage and current not only from the classical point of connection between customer and supplier. Time-varying harmonics require statistical post processing and depends on the observation of different voltage and currents. This paper proposes a model that provides redundancy of the measurement aggregated harmonic phasors not only at the Point of Common Connection, but in all the distribution feeders, with joint synchronous devices. This can be get with no additional expenditures than the required for the regular Low Voltage (LV) distribution monitoring.