This paper presents the STATCOM model in PSIM, which compensate grid voltage unbalance and current harmonics from the non-linear, two-phase load. Grid voltage unbalance level and harmonics current of non-linear load given from measurement. The model of STATCOM is a 6-level voltage inverter. System voltage, and harmonics currents are controlled. All modes are realized and plots are plotted.

Abstract. Schemes with balanced, imbalanced and non-sinusoidal loads were modelled in MatLab in this paper. Verification (comparison of calculated values and measured) were done for active power (with difference less than 5%). There was a power phases inequality before transformer and after it.

This paper presents the model of STATCOM in EMTDC PSCAD, which can work in different modes: constant system voltage control mode, constant system reactive power control mode and constant power coefficient control mode. All modes is realized and plots are plotted.