English

29. Dynamic Effect.full

This paper presents the effects of Flexible AC Transmission System on transient stability analysis of power system stabilizers. In this proposed technique Static VAR Compensator (SVC) is used to control the transient stability problem. Transient stability is the ability of the power system to maintain synchronism when subjected to severe transient disturbance. The resulting system response involves large excursions of generator rotor angles and is influenced by the nonlinear power-angle relationship. Stability depends on both the initial operating state of the system and the severity of the disturbance. Usually, the system is altered so that the post-disturbance steady state operation differs from that prior to disturbance. Small signal stability is the ability of the power system to maintain synchronism under small disturbances. Such disturbances occur continually on the system because of small variations in loads and generation. The MATLAB based model has been made for power system stabilizers and simulation has been carried out with and without SVC to compare the effectiveness of the proposed compensator.

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