Journal
ELECTRIC POWER SYSTEMS RESEARCH
Volume 80, Issue 3, Pages 277-286Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2009.09.010
Keywords
Linear algebra; Observability analysis; Power system state estimation
Categories
Funding
- Ministry of Science and Technology of Spain through CICYT [DP12006-08001, MTM2006-15671]
- Junta de Comunidades de Castilla-La Mancha [PCI-08-0102, PCI-08-0065]
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An efficient and compact algebraic approach to state estimation observability is proposed It is based on transferring rows to Columns and vice versa in the Jacobian measurement matrix. The proposed methodology provides a unified approach to observability checking, critical measurement identification, determination of observable islands, and selection of pseudo-measurements to restore observability Additionally, the observability information obtained from a given set of measurements can provide directly the observability obtained from any subset of measurements of the given set Several examples at e used to Illustrate the capabilities of the proposed methodology. and results from a large case study are presented to demonstrate the appropriate computational behavior of the proposed algorithms Finally, some conclusions are drawn (C) 2009 Elsevier B.V. All rights reserved.
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