TY - GEN
T1 - Computational enhancements to the power system state estimator at harmonic frequencies
AU - Najjar, Maged
AU - Heydt, G. T.
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.
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M3 - Conference contribution
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 -