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Metering system plan considering cost, PMUs and technical criteria (observability, measurement redundancy, multiple topologies and gross error processing)

Grant number: 12/13460-7
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): October 01, 2012
Effective date (End): February 28, 2014
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal Investigator:Joao Bosco Augusto London Junior
Grantee:Alex Andrius Cecchim Bozz
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:11/01035-7 - Power system control and analysis, AP.TEM

Abstract

Recently it was demonstrated that observable metering systems absent of both critical measurements and critical sets do not guarantee gross error detection, even in the case of a single bad data (only one measurement containing a gross error). This happens because there are redundant measurements that have the characteristics of not reflecting their errors into the residuals of the state estimation process, that is, their errors are "masked". Consequently, errors in those measurements are not detected in the process of gross error detection and identification, causing significant impact in the states estimated. A methodology for metering system planning for state estimation purposes is proposed in this project. The proposed methodology will allow the project of observable metering system, absent of both critical measurements and critical sets, considering the investment cost of meter and Remote Terminal Units acquisition and installation, as well as the problem of redundant measurements that mask their errors. In order to do this the idea is to use evolutionary algorithms, the analysis of the HDt matrix as well as the Undetectability Index (UI) which allows the classification of the measurements in according to their characteristics of not reflecting their errors into the residuals of the state estimation process. It will be investigated also the possibility to obtain reliable metering system considering both conventional measurements and synchronized phasor measurements.

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
BOZZ, Alex Andrius Cecchim. Reliable metering system plan for state estimation considering cost, conventional, synchronized phasor measurements and index UI via Evolutionary Algorithm and HΔt matrix. 2014. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.

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