Simulation for transient characteristics of photovoltaic power generation system
QI Ren-long
ZHU Xiao-hui
ZHANG Qing-hui
Abstract：In order to solve the poor transient stability of photovoltaic power generation system, the electromagnetic transient simulation model for photovoltaic power generation system was established in the PSCAD/EMTDC environment.Based on the proposed model, the transient response characteristics of photovoltaic power generation system under the condition of three-phase short circuit faults and light intensity jump were analyzed.The physical model for photovoltaic power generation system was studied, and the dynamic simulation model for photovoltaic power generation system composed of photovoltaic array, maximum power tracking module, boost circuit and three-phase grid connected inverter was established.The transient characteristics of output active power, voltage and current of photovoltaic inverter under different operating conditions were compared and analyzed through the simulation.The results show that the output power and current of the inverter will change smoothly with the change of light intensity, while the short circuit faults will cause the voltage sags and transient over current.
Keywords：photovoltaic power generationstabilityPSCAD/EMTDC environmentsimulation modelthree-phase short circuitlight intensity jumptransient characteristicphysical model
Publication Date：2017-03-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 121-126 )