interarea oscillations phase imbalance power system stability

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Damping Inter-Area Oscillations Using Phase Imbalanced Series Compensation Schemes

Abstract—The recently proposed phase imbalanced series capacitive
compensation concept has been shown to be effective in enhancing
power system dynamics as it has the potential of damping
power swing as well as subsynchronous resonance oscillations. In
this paper, a comparative effectiveness of two “hybrid” series capacitive
compensation schemes in damping inter-area oscillations
is evaluated. A hybrid scheme is a series capacitive compensation
scheme, where two phases are compensated by fixed series capacitor
(C) and the third phase is compensated by either a TCSC or
SSSC in series with a fixed capacitor