Power Quality Analysis of Solar Plant by Measurement at Site and Through Simulation in PSCAD

Abstract

Grid connected PV solar generates DC power utilizing the solar energy as input and the generated DC power is converted to AC power using DC-DC converter and DC-AC Inverter. The output AC current from inverter consists of harmonic currents along with fundamental current. This current is fed to Grid through Inverter Duty Transformer (IDT) and Power Transformer (PT). The harmonics generated by solar plant are measured at LV & HV of IDT by using a harmonic analyser at site and presented in this paper. Apart from it, simulation model of PV solar generation with DC-DC converter & Inverter is also developed in PSCAD and the generated harmonics are compared with the measured harmonics and presented in this paper.