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PMU placement for robust state estimation
Date
2013-09-25
Author
Göl, Murat
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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URI
https://hdl.handle.net/11511/69473
DOI
https://doi.org/10.1109/naps.2013.6666868
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Department of Electrical and Electronics Engineering, Conference / Seminar
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State estimation problem is commonly solved by the weighted least squares (WLS) method, which is known to be non-robust, i.e. it fails in the presence of a single bad measurement. A more robust alternative is the least absolute value (LAV) estimator which can automatically reject bad-data in the absence of the so called leverage measurements. When using only measurements provided by phasor measurement units (PMU), it can be shown that leverage measurements can be eliminated easily by strategic scaling. Henc...
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Dynamic models of power plants may change during its operation due to physical processes and human error. Inaccurate dynamic power plant models may affect the operation and planning of power systems. Hence, keeping the model updated is crucial. Traditionally, dynamic models of power plants are calibrated by offline staged tests. Recently, PMU based remote calibration techniques are developed in attempt to calibrating the dynamic models remotely and reducing the frequency of offline calibration. This paper p...
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The NASA-Ames developed panel code, PMARC, is employed to compute subsonic flows over an ogivecylinder body with an overall length of 7.5 diameter. Flow separation is modeled by vortex wakes attached to the base region and the leeward sides of the cylinder body. The computed surface pressures, and integrated normal force and pitching moment coefficients are found to be in good agreement with the experimental data up to 20° incidence. This favorable agreement suggests that the panel codes may be a computatio...
PM3 treatment of some endohedrally Se and H-2 doped C-60 systems
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Certain endohedrally Se and hydrogen doped C-60 systems, (Se + nH(2)) @ C-60 have been quantum chemically investigated by using PM3 method at the level of RHF approach. The composite structures are found to be stable but endothermic in nature. The Se@C-60 system is found to be unable to accommodate more than nine hydrogen molecules.
PM3 treatment of certain catenanes having cyclacenes and cyclotriacontene units
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The results of PM3 (RHF) type semiempirical quantum chemical treatment of certain catenanes which consisted of all-trans cyclotriacontene shaft and the cyclacene shuttle, having R benzenoid rings (R = 6-9) were reported. The results have indicated that the cryptoannulenic effect which is the characteristic property of cyclacenes is almost lost when they are incorporated into the structures of catenanes considered. (C) 2001 Elsevier Science BN. All rights reserved.
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M. Göl, “PMU placement for robust state estimation,” 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/69473.