Description: In this paper optimal location and capacity of
Unified Power Flow Controller to improve the power system
stability using hybrid technique composed of ABC-GSA
algorithms is proposed. Here, the maximum power loss bus is
identified as the most suitable location for connecting the UPFC
under generator outage conditions. The optimum location has
been determined using the Artificial Bees Colony (ABC)
algorithm. Depending on the violated power flow quantities the
Gravitational Search Algorithm (GSA) optimize the required
capacity of the UPFC to recover the initial stable operating
condition. The proposed work is implemented in the MATLAB
platform and the performance is analyzed by comparison with
individual algorithms ABC and GSA. The comparison results
demonstrate the superiority of the proposed Hybrid approach
and confirm its potential to solve the problem.
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