Redundancy and Observability Analysis of Conventional and PMU Measurements

Author

London, J. B A, Jr. ; Piereti, S.A.R. ; Benedito, R.A.S. ; Bretas, N.G.

Author_Institution

Dept. of Electr. Eng., Univ. of Sao Paulo, Sao Carlos, Brazil

Volume

24

Issue

3

fYear

2009

Firstpage

1629

Lastpage

1630

Abstract

This letter shows that the H _Delta matrix can be used for redundancy and observability analysis of metering systems composed of PMU measurements and conventional measurements (power and voltage magnitude measurements). The H _Delta matrix is obtained via triangular factorization of the Jacobian matrix. Observability analysis and restoration is carried out during the triangular factorization of the Jacobian matrix, and the redundancy analysis is made exploring the H _Delta matrix structure. As a consequence, the H _Delta matrix can be used for metering system planning considering conventional and PMU measurements. These features of the H _Delta matrix will be outlined and illustrated by numerical examples.

Keywords

Jacobian matrices; observability; phase measurement; power measurement; power meters; power system measurement; Jacobian matrix; PMU measurements; metering system planning; observability analysis; power measurements; redundancy analysis; triangular factorization; voltage magnitude measurements; Network observability; phasor measurement units; redundancy analysis; state estimation;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2009.2021195

Filename

5159362