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Transient stability preventive control of an electric power system using a hybrid method

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3 Author(s)
Ferreira, C.M. ; INESC Coimbra & DEE/ISEC, Quinta da Nora, Coimbra ; Barbosa, F.P.M. ; Agreira, C.I.F.

This paper presents a transient stability preventive control technique based on a hybrid method. In order to maintain the power system security it is evaluated the generators output power that should be shift from the most unstable synchronous machines to the undisturbed units. The reallocation of the generators output power is carried out using an optimal power flow program. The hybrid method is a very important tool for the transient stability analysis, since it allows a fast evaluation of the stability limits and margins. This approach can also easily accommodate detailed models of the network devices and protective schemes. In order to validate the established mathematical models it was studied the transient stability of the New England test power network. The results obtained with the proposed methodology were compared with the solutions produced by another numerical formulation, showing a very close agreement.

Published in:

Power System Conference, 2008. MEPCON 2008. 12th International Middle-East

Date of Conference:

12-15 March 2008

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