PMU measurement uncertainty considerations in WLS state estimation

Chakrabarti, Saikat & Kyriakides, Elias (2009) PMU measurement uncertainty considerations in WLS state estimation. Transactions on Power Systems, 24(2), pp. 1062-1071.

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A method to assign weights to the measurements obtained through phasor measurement units (PMUs) in a weighted least squares (WLS) state estimation is presented in this paper. The uncertainties for direct measurements are obtained from the manufacturer’s specifications. For pseudo-measurements, the uncertainties are evaluated by using the classical uncertainty propagation theory. The propagation of measurement uncertainty as a function of line length and conductor type is also investigated. The lower and upper bounds of the estimated states considering the measurement uncertainties are found by using linear programming. The proposed method is applied on the IEEE 14-, 30-, 57-, and 118-bus test systems, and the state estimation results including the lower and upper bounds of the estimated states are presented.

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ID Code: 20091
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Measurement uncertainty, phasor measurement, state estimation, total vector error
DOI: 10.1109/TPWRS.2009.2016295
ISSN: 0885-8950
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Past > Schools > School of Engineering Systems
Copyright Owner: Institute of Electrical and Electronics Engineers
Copyright Statement: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Deposited On: 26 Apr 2009 23:13
Last Modified: 09 Jun 2010 13:37

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