SRF THEORY BASED STATCOM FOR COMPENSATION OF REACTIVE POWER AND HARMONICS

The power electronic devices like converters and inverters inject harmonic currents into AC system due to their non linear characteristics. These devices draw high amount of reactive power from source. The commencement of Nonlinear Load into the ac power system will have the effect of harmonics. The presence of harmonics in system it will effected with power quality problems. Due to this high amount of power losses and disoperation of power electronics devices is caused, along with this Harmonics have a number of undesirable effects like Voltage disturbances. These harmonics are needed to mitigate for Power Quality Enhancement in distributed system. Here the device called STATCOM is one of the FACTS Devices which can be used to mitigate the harmonics and reactive power compensation. The voltage source converter is core of the STATCOM and the hysteresis current control is indirect method of controlling of VSC. In this paper we implement with SRF based STATCOM control. SRF theory is implemented for the generation of controlling reference current signals for controller of STATCOM. The MatlabSimulink based model is developed and simulation results are showed for linear and nonlinear load conditions.