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This paper presents voltage sags detection methods based on PMU (Phasor Measurement Unit) measurements. Voltage magnitude, phase angle jump, frequency deviation and RO-COF (Rate of Change of Frequency) are continuously monitored during the sag phenomena in order to analyse the capability of PMUs for the sag disturbance detection. Real time simulations using RTDS (Real Time Digital Simulator) are used...
This paper aims to evaluate the effectiveness of recursive filtering techniques in order to increase the accuracy of synchronized harmonic data provided by PMUs (Phasor Measurement Units). The recursive filters are known by their capability of reducing noise, compensating for missing data and filtering outliers from PMU input signals for real-time data processing. In this work, the moving average,...
This paper presents a novel approach for harmonic state estimation for a real-time power quality management in distribution networks using Phasor Measurement Units (PMUs). In the developed methodology, the PMUs measure voltages and currents signals with harmonic distortion in those buses which are continuously monitored by these meters. Load historical data are considered for the non-monitored buses...
This paper describes a harmonic state estimation technique for unbalanced three-phase distribution systems using Phasor Measurement Units (PMUs), considering the presence of non-linear loads connected to the system. In the proposed approach, the measured phasor values are harmonic voltages and branch currents in those buses continuously monitored by PMUs. For the non-monitored buses, their loads are...
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