Research Article
State Estimation of Power System Using PMU Devices
@ARTICLE{10.4108/ew.3273, author={S Shanmugapriya and Puspesh Pallav and Mukul Patel and Virendra Mulgir}, title={State Estimation of Power System Using PMU Devices}, journal={EAI Endorsed Transactions on Energy Web}, volume={12}, number={1}, publisher={EAI}, journal_a={EW}, year={2025}, month={12}, keywords={State estimation, phasor measurement unit (PMU), weighted least square (WLS) estimation, SCADA}, doi={10.4108/ew.3273} }- S Shanmugapriya
Puspesh Pallav
Mukul Patel
Virendra Mulgir
Year: 2025
State Estimation of Power System Using PMU Devices
EW
EAI
DOI: 10.4108/ew.3273
Abstract
This paper explains the role of Phasor Measurement Units (PMUs) in estimating the state of energy systems and suggests a linear state estimator involving PMU current and voltage measurements for tracking the system state. The state estimator carries out the estimation process in two phases. The first phase uses the conventional SCADA measurements and applies the classical Weighted Least Square (WLS) approach for estimating the current system state, and the second phase corrects and tracks the system state using the PMU measurements in the subsequent intervals. It provides simulation results of the proposed method on IEEE 30 and 57 bus energy systems for exhibiting its superiority.
Copyright © 2025 S. Shanmugapriya et al., licensed to EAI. This is an open access article distributed under the terms of the CC BY-NC-SA 4.0, which permits copying, redistributing, remixing, transformation, and building upon the material in any medium so long as the original work is properly cited.
