Abstract
The optimal power flow (OPF) is one of the key tasks to be performed in the complicated operation and planning of a power system. Directing the power in such a way that the lightly loaded branches are loaded to reduce the system load curtailment is an option which can be achieved by making use of FACTS devices. This paper proposes a set of load curtailment sensitivity indices for optimal placement of Unified Power Flow Controller (UPFC) in power system network. An OPF formulation considering the minimization of load curtailment requirement as an objective has been developed in this paper to study the impact of optimal placement of UPFC. The effectiveness of the proposed method has been tested on IEEE-14 bus test system. The obtained results have been presented in terms of change in system load curtailment with respect to changes in UPFC controller parameters for the best location. The optimal location of UPFC in a line has been decided based on the calculated sensitivity indices. Conclusion is made on different results to see the benefit of UPFC in power system.
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