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The increasing power demand has led to the growth of new technologies that play an integral role in shaping the future energy market. Keeping in view of the environmental constraints, grid-connected wind turbines are promising increasing system reliability. This paper presents the impact of FACTS controllers on the long-term dynamic behaviour of power systems connected with wind farms based on doubly-fed induction generator systems. Wind speed variations over a period of 1200 s are monitored from the regional meteorological website, and the voltage oscillations/real power injections of the wind farm are observed with and without FACTS devices. EUROSTAG is used for carrying out time domain simulations. [ABSTRACT FROM AUTHOR]

The deregulated electric power industry creates a scope for the private companies to enter and compete in different activities of electric power system market. The electricity transmission and the determination of wheeling cost are more challenging in the deregulated power environment. Flexible Alternating Current Transmission System (FACTS) controllers are used for solving various transmission system problems for the maximum benefit. This paper proposes a power flow tracing methodology incorporating the contribution of each generating unit towards load demands and line flows, for the computation of both generation cost and wheeling cost. Also the rating and location of different types of FACTS devices for the minimization of line losses for the shrinkage of both generation cost and wheeling cost, and an optimal unit commitment algorithm for further reduction of both costs are proposed. Case study is taken for the standard IEEE 30-bus system, for verifying the effectiveness of the proposed algorithm. [ABSTRACT FROM AUTHOR]