Particular PV grid-connected system under symmetrical and asymmetrical faults analysis

Abstract

Photovoltaic (PV) power plants development is increasing rapidly to overcome the world's environmental pollution and smooth the energy shortage crisis. Faults issues with PV are investigated in this paper. Precisely, an acceptable particular potential 1 kV PV grid-connected power system is modelled for symmetrical and asymmetrical faults analysis. The grid is 0.4 kV power linked to 0.22kV/0.4kV step up transformer through three phase voltage source inverter (VSI) technology. Different scenarios when faults occur are studied and investigated whilst the fault type and location is changed progressively. An efficient current control strategy using synchronous reference frame (SRF) method is implemented in PSCAD/EMTDC software on the basis of proposed accurate data. Sinusoidal pulse width modulation (SPWM) technique is applied. The studied PV system and synchronous generator performance against faults is also shortly compared. With the obtained satisfactory results, we can address more complex power system fault problems with PV.