Localization of Forced Oscillations in the Power Grid Under Resonance Conditions
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abstract
2018 IEEE. This paper proposes a data-driven method to pin-point the source of a new emerging dynamical phenomenon in the power grid, referred to 'forced oscillations' in the difficult but highly risky case where there is a resonance phenomenon. By exploiting the low-rank and sparse properties of synchrophasor measurements, the localization problem is formulated as a matrix decomposition problem, which can be efficiently solved by the exact augmented Lagrange multiplier algorithm. An online detection scheme is developed based on the problem formulation. The data-driven nature of the proposed method allows for a very efficient implementation. The efficacy of the proposed method is illustrated in a 68-bus power system. The proposed method may possibly be more broadly useful in other situations for identifying the source of forced oscillations in resonant systems.
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2018 52nd Annual Conference on Information Sciences and Systems (CISS)