Mitigation of Harmonics in MPPT based PV Plant using Power Quality Compensators

Abstract

Green energy is most important contributor of national grid system, one among them is the solar power and Photovoltaic solar power plant is designed and developed for feeding the remote loads. The PV solar plant is designed with incremental conductance based Maximum Power Point Tracking (MPPT) algorithm to extract the optimal power from the PV panels. The PV Solar plant is integrated with the power grid for extracting power from PV system. The PV plant is equipped with the STATCOM for mitigating voltage harmonics from the solar plat output. The power quality of the system has been analysed using Fast Fourier Transform (FFT) and computed the Total Harmonic Distortion (THD) for the output voltage in different load scenarios. The case one illustrates the THD analysis of the system without compensators and it is recording a very high value which is highly undesirable according to IEEE standards. In second case the voltage harmonics have been analysed and recorded a very lowest value which is highly accepted according to IEEE standards.