Compound Admittance Matrix Estimation of Three-Phase Untransposed Power Distribution Grids Using Synchrophasor Measurements

This article considers the problem of estimating parameters compound admittance matrix three-phase untransposed low- and medium-voltage electrical distribution networks using synchrophasor measurements from phasor measurement units (PMUs). The work proposes analyzes performance a preprocessing strategy on PMU's raw measurements, which consists in grouping clusters and, then, averaged each cluster for estimation. step reduces noise level discards similar cluster, ultimately improving estimation quality regression-based methods such as least squares (LS) total (TLS). proposed approach uses linear model with nodal voltages, injection currents, branch currents. We adopt realistic polar coordinates, reflects accuracy class measuring instruments is projected to rectangular coordinates. validated by performing simulated experiments different CIGRE IEEE benchmark grids. Furthermore, includes sensitivity analyses policy (cluster type size), availability or currents well levels data.