Observability analysis: a new topological algorithm

Observability analysis for state estimation using Hachtel’s augmented matrix method

“…The obtained observable islands are still: [1,2,3], [4,5], and [6]. Since there is no irrelevant injections, the process stopped.…”

“…We can clearly see that the observable islands are: [1,2,3], [4,5], and [6], since the rows in C B corresponding to branches 3-4, and 4-6 have at least one nonzero element, which implies that these two branches are unobservable. Their removal leads to the observable islands.…”

“…Topological approaches make use of the graph theory to determine network observability based on the type and location of the measurements, without any floating point arithmetic [1][2][3][4][5][6]. Numerical approaches are based on the decoupled measurement Jacobian matrix and its associated gain matrix.…”

Aproximación estocástica al análisis de observabilidad en redes de abastecimiento de agua

“…Díaz et al (2015) adaptan del sector eléctrico un método algebraico para el análisis de la matriz jacobiana J, que permite extraer gran cantidad de información. Además, en la literatura propia el sector eléctrico, un referente en la implementación de técnicas de EE y AO, se pueden encontrar una gran variedad de propuestas: métodos topológicos (Krumpholz et al, 1980;Nucera and Gilles, 1991; entre otros), algebraicos (Castillo et al, 2005;Solares et al, 2009; entre otros), híbridos entre los dos anteriores (Contaxis and Korres, 1998;Korres and Katsikas, 2003; entre otros) e incluso otros basados en técnicas heurísticas (Habiballah and Irving, 2001;Caro et al, 2013).…”

Metodologia para depuração off-line de parâmetros série e shunt de linhas de transmissão através de diversas amostras de medidas

“…Os métodos topológicos caracterizam-se pela criação de rotinas especificas que não exigem cálculos, mas que são de natureza combinatória e complexa (KRUMPPHOLZ et al, 1980;QUINTANA et al, 1982;NUCERA;GILLES, 1991 …”