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Area-based COI-referred transient stability index for large-scale power system


Abdul Wahab, Noor Izzri and Mohamed, Azah (2008) Area-based COI-referred transient stability index for large-scale power system. International Journal of Power, Energy and Artificial Intelligence, 1 (1). pp. 1-7.


This paper presents a new transient stability index called the Area-based COI-referred Transient Stability Index for a large electrical power system. A large power system is divided into smaller areas depending on the coherency of the system due disturbances before the index is applied on the system. The proposed index is defined by associating with each area of the power system an equivalent inertia representing the total inertia of the generation located in that area. Assuming that each area is coherent, it is possible to assimilate its behavior to that of a single large machine with same inertia and generation. It also offers a direct means of deriving the centre of inertia (COI). The COI provides very useful information for tracking the stability of interconnected areas. So, instead of assessing all generators’ rotor angles. Simulations on the large practical power system show the effectiveness of the proposed index.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Keywords: Transient stability index; Transient stability assessment; Time domain simulations
Depositing User: Nabilah Mustapa
Date Deposited: 06 May 2015 08:19
Last Modified: 02 Dec 2015 05:03
URI: http://psasir.upm.edu.my/id/eprint/13270
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