Model-Agnostic Linear Estimation of Generator Rotor Speeds Based on Phasor Measurement Units

This paper focuses on the estimation of the rotor speeds of synchronous machines by means of phasor measurement units. This estimation is aimed at online monitoring of electromechanical transients and transient stability analysis. The proposed technique is based on the concept of frequency divider f...

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Bibliographic Details
Published in:IEEE transactions on power systems 2018-11, Vol.33 (6), p.7258-7268
Main Authors: Milano, Federico, Ortega, Alvaro, Conejo, Antonio J.
Format: Article
Language:English
Subjects:
Case studies
Convexity
Dynamic state estimation (DSE)
Mathematical model
Optimization
phasor measurement unit (PMU)
Phasor measurement units
Phasors
Power system dynamics
Sensitivity analysis
Stability analysis
State estimation
synchronous machine
Synchronous machines
Transient stability
transient stability analysis
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Summary:This paper focuses on the estimation of the rotor speeds of synchronous machines by means of phasor measurement units. This estimation is aimed at online monitoring of electromechanical transients and transient stability analysis. The proposed technique is based on the concept of frequency divider formula recently published by the first two authors in these Transactions. The dynamic state estimation is formally stated as a convex optimization problem and a thorough discussion of the sensitivity analysis of the optimal solution is provided. The case study considers a dynamic 1479-bus model of the all-island Irish system and discusses the effect of bad data, noise, and latency on the proposed estimation technique.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2018.2846737