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New decomposition-aggregation approach applied to power system with speed governor

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1 Author(s)
Shaaban, H. ; Fac. of Eng. & Technol., Menoufia Univ., Egypt

A new decomposition-aggregation approach is developed to perform transient stability analysis of an N-machine power system with a speed governor. The system decomposition is performed so that every subsystem includes four machines, instead of only two or three machines as considered in other work. The approach is applied to a 10-machine power system and an estimate for the system asymptotic stability domain is determined. System transient stability computations are carried out considering a three-phase short circuit fault, with successful reclosure, near a system bus or a sudden loss of one of the system loads. The approach is used to determine a reclosure time for the faulted line and a reconnection time for the lost load required for the system to regain its prefault (normal) conditions. The approach developed is suitable and can be easily used for stability analysis of power systems

Published in:

Generation, Transmission and Distribution, IEE Proceedings C  (Volume:138 ,  Issue: 5 )