Study on low voltage ride through test methods for PV inverter

Photovoltaic (PV) inverter is the basic unit for low voltage ride through (LVRT) technology in photovoltaic power plant. Generally,there are two LVRT test methods for PV inverter, one is using reactors to simulate grid short-circuit fault, the other is power electronics simulating of power grid. Base on the study of test methods' principle and modelling simulation by PSCAD/EMTDC, it was analyzed and proved that feasibility and effectiveness of LVRT test methods which provided theoretical support for PV inverter LVRT test platform in this thesis.