Modeling the Grid Connected Solar PV (GCPV) System with D-STATCOM to Improve Stability System

The purpose of this research is to model and simulate 100 kW solar PV systems that are connected to the utility distribution system with and without Distribution Static Synchronous Compensator (D-STATCOM) and Dynamic Voltage Restorer (DVR) under normal and faults condition in MATLAB/ Simulink. The test systems consist of a PV array that is connected in series and parallel modules, a DC-DC Boost Converter, Maximum Power Point Tracking (MPPT) control, DC-AC inverter, inverter control, filter, three-phase load, distribution transformer, and grid equipment. The grid operates test systems at the nominal three-phase line to line voltage of 260 V, supplied from 100 kVA 25/0.26 kV distribution transformer. The simulation results showed that the installation of D-STATCOM and DVR in GCPV systems improved 80-90% of the output power from the PV systems. The implementation of D-FACTS devices in GCPV systems will be beneficial for future power system stability studies in the distribution system.