Voltage stability evaluation of real power transmission system using singular value decomposition technique
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Voltage stability is an important factor that needs to be taken into consideration during the planning and operation of power systems in order to avoid voltage collapse and subsequently partial or full system blackout. This paper presents singular value decomposition (SVD) technique to assess voltage stability of Qatar power transmission system. A MATLAB program has been developed for SVD technique. The voltage stability of the system has been analyzed during the peak load condition of summer 2007. The SVD results obtained by the developed MATLAB programs confirm that the Qatar power transmission system is "voltage stable". The critical load buses that could lead the system to voltage instability have been identified and the computer results have shown that there are critical load buses in the system. These critical load buses are located in an industrial area feeding from Qatar power system. The results of the critical load buses obtained by SVD have been verified by Q-V sensitivity.
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