Topology Error and Bad Data Processing
in Generalized State Estimation
in Generalized State Estimation
File(s)ROSION_R2.pdf (186.4 KB)
Accepted version
Author(s)
Lourenço, EM
Coelho, EPR
Pal, BC
Type
Journal Article
Abstract
This paper presents a method for processing real-time
data error in generalized state estimation (GSE). Attention is focused
on the two main types of error: network topology errors
and bad data on analog measurements. The proposed approach is
able to handle both errors without making any previous assumption
regarding the nature of those errors. The degrading effects
of topology errors over bad data processing when both topology
and measurement errors occur at the same time are evaluated and
new strategy is proposed to overcome it. GSE is treated as a constrained
optimization problem where measurements and circuitbreaker
status are modeled as equality constraints.Geometric tests
based on the geometric interpretation of the Lagrange multiplier
vector are then utilized to determine the source of the error. The
proposed strategy is tested on two model power networks represented
at the bus-section level which is derived from the IEEE
30-bus and 118-bus systems.
data error in generalized state estimation (GSE). Attention is focused
on the two main types of error: network topology errors
and bad data on analog measurements. The proposed approach is
able to handle both errors without making any previous assumption
regarding the nature of those errors. The degrading effects
of topology errors over bad data processing when both topology
and measurement errors occur at the same time are evaluated and
new strategy is proposed to overcome it. GSE is treated as a constrained
optimization problem where measurements and circuitbreaker
status are modeled as equality constraints.Geometric tests
based on the geometric interpretation of the Lagrange multiplier
vector are then utilized to determine the source of the error. The
proposed strategy is tested on two model power networks represented
at the bus-section level which is derived from the IEEE
30-bus and 118-bus systems.
Date Issued
2014-12-22
Date Acceptance
2014-12-01
Citation
IEEE Transactions on Power Systems, 2014, 30 (6), pp.3190-3200
ISSN
1558-0679
Publisher
IEEE
Start Page
3190
End Page
3200
Journal / Book Title
IEEE Transactions on Power Systems
Volume
30
Issue
6
Copyright Statement
© 2014 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Description
03.03.15 KB. ok to add accepted version to spiral
Subjects
Bad data analysis
generalized state estimation
Lagrange multipliers
topology error identification
Publication Status
Published
Coverage Spatial
USA