Published Paper Details:

Power quality issues such as current and voltage harmonics, voltage sag / swell has become major reasons for power failure and power quality degradation in current times. Renewable energy sources are now consuming most of the energy for a day. Power demand is also growing due to an abnormal growth of consumers of electrical energy. There are problems with power quality. As a result, in the installation of custom power devices is a major consideration for improving these power quality issues. This paper therefore, deals with the enhancement power quality problems by means of a Photo-Voltaic -Unified Power Quality Compensator (PV-UPQC) interface with the UPQC DC-link via a DC-DC step up converter. The PV array is interfaced with the UPQC DC-link by means of a DC-DC boost converter. Maximum power extracted from the PV array by means of MPP control is fed to boost the converter. The UPQC Shunt Voltage Source Converter compensates for issues with load power quality issues, such as current harmonics. Apart from this VSC shunt, it supplies the grid with effective active power from the SPV while retaining the DC voltage link at the preset voltage level. The VSC series compensates for issues with grid side voltage PQ such as voltage sag /swell and harmonics at different non-linear loads connected to the (PCC) load bus. The simulation and evaluation of PV-UPQC with various nonlinear load cases such as R-L load, personal computer, fluorescent lamp, television is performed in PSCAD under varying irradiation and grid voltage disturbances such as voltage sag / swell and load bus (PCC) harmonics was validated by IEEE std. 519-2014 and noted that the PCC's harmonics are within the limits.