Comparison of Adaptive Critic-Based and Classical Wide-Area Controllers for Power Systems

Abstract--An adaptive critic design (ACD)-based damping controller is developed for a thyristor-controlled series capacitor (TCSC) installed in a power system with multiple poorly damped interarea modes. The performance of this ACD computational intelligence-based method is compared with two classical techniques, which are observer-based state-feedback (SF) control and linear matrix inequality LMI-H robust control. Remote measurements are used as feedback signals to the wide-area damping controller for modulating the compensation of the TCSC. The classical methods use a linearized model of the system whereas the ACD method is purely measurement-based, leading to a nonlinear controller with fixed parameters. A comparative analysis of the controllers' performances is carried out under different disturbance scenarios. The ACD-based design has shown promising performance with very little knowledge of the system compared to classical model-based controllers. This paper also discusses t...

• Type: Journal
• Year: 2008
• Where: TSMC
• Authors: Swakshar Ray, Ganesh K. Venayagamoorthy, Balarko Chaudhuri, R. Majumder
• Keywords: -based Damping Controller, Computational Intelligence-based Method, TSMC 2008, Wide-area Damping Controller