"Subsynchronous resonance is an electric power system condition where
the electric network exchanges energy with a turbine at one or more of the
natural 'f~equencies of the combined system below the synchronous frequency of
the system" .
podipireddi srinuvasarao (2020). SUBSYNCHRONOUS RESONANCE (https://www.mathworks.com/matlabcentral/fileexchange/50647-subsynchronous-resonance), MATLAB Central File Exchange. Retrieved .