DESIGN A SUPPLEMENTARY SSR DAMPING CONTROLLER FOR STATCOM USING THE PARTICLE SWARM OPTIMIZATION METHOD

It is widely accepted that, series compensation of transmission lines results in increscent of power transfer capability. This kind of compensation may be led to adverse oscillations. The main objective of this work is to design a supplementary Sub-Synchronous Resonance (SSR) damping controller for STACOM using the Particle Swarm Optimization (PSO) method. For this purpose, the STATCOM is utilized and a supplementary controller is granted to its conventional controller. Furthermore, a performance index which is defined based on the system dynamics is implemented as an objective function to examine the potential of STATCOM in mitigating the oscillations. The effectiveness of the proposed controller is demonstrated through Fast Fourier Transform (FFT) analysis and time domain simulations conducted on IEEE Second Benchmark Model (SBM) combined with STATCOM.