TY - GEN

T1 - Computational enhancements to the power system state estimator at harmonic frequencies

AU - Najjar, Maged

AU - Heydt, G. T.

N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.

PY - 1991

Y1 - 1991

N2 - A study on the application of estimation theory to predict harmonic bus voltages and line currents which cannot or are not measured directly is proposed. The methodology is based on measurements, state estimators, and harmonic system modeling. A hybrid of quadratic and non-quadratic criterion-based techniques utilizing singular value decomposition is used with a feasible application to large-scale problems. Contrary to the fundamental case, the Jacobian matrix of the power system equations at harmonic frequencies is shown to be ill-conditioned. A robust numerical technique, using linear transformations to scale the Jacobian matrix, is suggested to render the estimation problem solvable in a practical environment.

AB - A study on the application of estimation theory to predict harmonic bus voltages and line currents which cannot or are not measured directly is proposed. The methodology is based on measurements, state estimators, and harmonic system modeling. A hybrid of quadratic and non-quadratic criterion-based techniques utilizing singular value decomposition is used with a feasible application to large-scale problems. Contrary to the fundamental case, the Jacobian matrix of the power system equations at harmonic frequencies is shown to be ill-conditioned. A robust numerical technique, using linear transformations to scale the Jacobian matrix, is suggested to render the estimation problem solvable in a practical environment.

UR - http://www.scopus.com/inward/record.url?scp=0025843271&partnerID=8YFLogxK

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M3 - Conference contribution

AN - SCOPUS:0025843271

SN - 081862115X

T3 - Proceedings of the Annual North American Power Symposium

SP - 44

EP - 53

BT - Proceedings of the Annual North American Power Symposium

PB - Publ by IEEE

T2 - Proceedings of the 22nd Annual North American Power Symposium

Y2 - 15 October 1990 through 16 October 1990

ER -