Extended real-time voltage instability identification method based on synchronized phasor measurements

Ferreira, Alan P. F.; Osipov, Denis; Taranto, Glauco N.; Assis, Tatiana M. L.; Chow, Joe H.

doi:10.1016/j.ijepes.2022.108804

Extended real-time voltage instability identification method based on synchronized phasor measurements

Journal Article · Mon Nov 28 23:00:00 EST 2022 · International Journal of Electrical Power and Energy Systems

DOI:https://doi.org/10.1016/j.ijepes.2022.108804· OSTI ID:2424465

Ferreira, Alan P. F. ^[1]; Osipov, Denis ^[2]; Taranto, Glauco N. ^[3]; Assis, Tatiana M. L. ^[3]; Chow, Joe H. ^[2]

Federal Center for Technological Education of Rio de Janeiro, RJ (Brazil); Federal University of Rio de Janeiro (COPPE), RJ (Brazil)
Rensselaer Polytechnic Inst., Troy, NY (United States)
Federal University of Rio de Janeiro (COPPE), RJ (Brazil)

This paper presents an extended adaptive approach designed to accurately estimate the Thévenin equivalent parameters using phasor measurements at a given bus for measurements lying in any of four quadrants of the PQ-plane. The improvement is achieved by using a new condition to properly update the estimated parameters after an initial guess. Based on an adaptive philosophy, the proposed approach can correctly account for the intrinsic nonlinearities of a power system, can provide a real-time estimation of Thévenin parameters, and does not require network topology knowledge. The method is validated using the Kundur 2-area system, showing estimation improvements compared to the current adaptive approach and the classical recursive least-squares method. The proposed approach is able to estimate both sides of the system with respect to the measurement bus. In addition, a data-driven voltage stability index is developed. To illustrate the performance of the proposed approach in a larger power system, a voltage stability assessment is carried out on the IEEE 39-bus system, considering the action of overexcitation limiters of generators and nonlinear loads. The proposed approach is suitable for applications that require an accurate Thévenin equivalent estimation in real-time, such as for voltage stability assessment. The new approach provides a reliable tool for the system operators to make proper and timely decisions.

View Accepted Manuscript (DOE)

Research Organization:: Rensselaer Polytechnic Inst., Troy, NY (United States)

Sponsoring Organization:: USDOE; National Science Foundation (NSF); CNPq

OSTI ID:: 2424465

Journal Information:: International Journal of Electrical Power and Energy Systems, Journal Name: International Journal of Electrical Power and Energy Systems Journal Issue: C Vol. 147; ISSN 0142-0615

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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42 ENGINEERING
Engineering
Phasor measurements
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