Article ID Journal Published Year Pages File Type
398711 International Journal of Electrical Power & Energy Systems 2012 9 Pages PDF
Abstract

In this paper, a new algebraic-graph method for identification of islanding in power system grids is proposed. The proposed method identifies all the possible cases of islanding, due to the loss of a equipment, by means of a factorization of the bus-branch incidence matrix. The main features of this new method include: (i) simple implementation, (ii) high speed, (iii) real-time adaptability, (iv) identification of all islanding cases and (v) identification of the buses that compose each island in case of island formation. The method was successfully tested on large-scale systems such as the reduced south Brazilian system (45 buses/72 branches) and the south-southeast Brazilian system (810 buses/1340 branches).

► A new, fast and reliable algebraic-graph method for islanding analysis is proposed. ► A comprehensive theoretical foundation for the proposed method is presented. ► The method is based on the factorization of the bus-branch incidence matrix. ► The buses that compose each island are easily identified by factorization paths. ► A single factorization suffices to check islanding for the N-1 criterion.

Related Topics
Physical Sciences and Engineering Computer Science Artificial Intelligence
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