A Comparative Analysis on Wide-Area Power System Control with Mitigation the Effects of an Imperfect Medium

The increasing interest in wide-area damping control poses significant challenges for the consistent operation, control and stability of the complete power system. This study investigates various techniques for mitigation of the effect of imperfect communication medium in a wide-area damping control system. The Modelling of an imperfect communication network is done by considering the signal latency, packet drop-out, and random noises in the remote wide-area signal. The signal latency is modelled using the third order of the Pade approximation method, and the random white noise is Gaussian in nature. Different control strategies are applied in a wide-area power system for mitigating the effects of signal latency and noise along with overall stability enhancement of the complete grid. The performance of various controllers as a wide-area damping controller (WADC) is evaluated upon a standard test power system through suitable time-domain simulations using the nonlinear model on MATLAB/Simulink platform.