“20th PSCC 2018 papers submission and review platform

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Rotor Angle Stability Analysis using Normal Form Method with High Penetrations of Renewable Energy Sources

Renewable Energy Sources (RES), especially wind and photovoltaics, often inject power into the network through power electronic converters resulting in the lack of inertia and synchronizing torque in the whole network. Thus, increasing RES penetration affects rotor angle stability. In this paper, the rotor angle stability of the middle and western Japanese power system model with a high penetration of RES is studied. The transient stability of the model is mainly restricted by oscillatory instability of inter-area modes. The high penetration of RES and the de-commitment of the conventional generators would make the power system more stressed and increase the effect of nonlinearity. The scope of the small-signal stability analysis would be very limited in such a situation. In contrast, it is shown in this paper that a nonlinear stability analysis using normal form method can provide the appropriate picture of the multi-swing stability without time-domain simulations.

Author(s):

Hiroyuki Amano    
The University of Tokyo
Japan

Akihiko Yokoyama    
The University of Tokyo
Japan

 

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