Abstract
The ability to perform state estimation depends on whether sufficient measurements are well distributed throughout the system. If enough measurements are available to make state estimation possible, the network is considered to be observable. If a network is not observable, it is still useful to know which portion has a state which can be estimated (observable islands). In this chapter, three observability analysis methodologies for state estimation are discussed: topological, numerical, and hybrid, and the concept of extended observable islands is presented. Network modeling at the physical level, which is an essential characteristic of generalized state estimation, is also discussed. In this type of model, short-circuit branches and open/closed breakers and switches can be explicitly represented.
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© 1999 Springer Science+Business Media New York
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Monticelli, A. (1999). Observability Analysis. In: State Estimation in Electric Power Systems. Power Electronics and Power Systems. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4999-4_7
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DOI: https://doi.org/10.1007/978-1-4615-4999-4_7
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