Modeling and power quality analysis of STATCOM using phasor dynamics

This paper deals with the modeling of synchronous static compensator (STATCOM) of a power system based on dynamic phasor model to investigate the performance of STATCOM for power quality analysis and compared with EMTP like simulation. The dynamic phasor model and EMT model of the STATCOM including the system is implemented in Matlab/Simulink toolbox and PSCAD/EMTDC, respectively. Details dynamic phasor model of STATCOM switching function and its control system has been presented. A credible solution to the power quality problems on the distribution network has been analyzed using dynamic phasor model and EMTP like PSCAD/EMTDC simulation techniques. The simulation results demonstrated that the dynamic phasor model of STATCOM including the system makes an excellent agreement with the detailed time-domain EMT model of PSCAD/EMTDC simulation. It is found that the dynamic behavior of STATCOM phasor model have very good potential application in analyzing power quality issues, faster in speed and higher accuracy as compared with PSCAD/EMTDC simulation.