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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sparse and numerically stable implementation of a distribution system state estimation based on Multifrontal QR factorization

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Author(s):
Hebling, Gustavo M. [1] ; Massignan, Julio A. D. [1] ; London Junior, Joao B. A. [1] ; Camillo, Marcos H. M. [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Electric Power Systems Research; v. 189, DEC 2020.
Web of Science Citations: 0
Abstract

Enhancing situational awareness of distribution networks is a requirement of Smart Grids. In order to fulfill this requirement, specialized algorithms have been developed to perform Distribution System State Estimation (DSSE). Due to the particularities of such networks, those algorithms often rely on simplifications and approximations of the measurement model which make difficult to generalize their results. This paper presents a sparse and numerically stable implementation of an algorithm for DSSE, which does not require any additional assumption from the traditional state estimation formulation. The numerical stability is guaranteed by using Multifrontal QR factorization and an optimal ordering technique is evaluated to reduce fill-in. Simulation results are carried out with IEEE three-phase unbalanced test feeders to evaluate the algorithm. (AU)

FAPESP's process: 16/19646-6 - Three-phase Multiarea state estimator for large scale distribution systems
Grantee:Julio Augusto Druzina Massignan
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/00214-4 - Distribution systems state estimators: classical approaches and new algorithms for the Smart Grid
Grantee:Julio Augusto Druzina Massignan
Support Opportunities: Scholarships abroad - Research Internship - Doctorate