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Modeling of UPFC operation under unbalanced conditions with dynamic phasors

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2 Author(s)
Stefanov, P.C. ; Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA ; Stankovic, A.M.

The paper describes an analytical large-signal model for unbalanced operation of the unified power flow controller (UPFC). This nonlinear, time-invariant model is expressed in terms of dynamic symmetric components, and it is validated on a benchmark power system example taken from the literature. The model is evaluated via simulations in unbalanced operation and during unbalanced (one phase to ground) faults. In both cases, it achieves a very good accuracy, in addition to a reduction in simulation time when compared with detailed time-domain models

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Power Systems, IEEE Transactions on  (Volume:17 ,  Issue: 2 )