Analysis of the maximum installed capacity of PV station constrained by power system security and stability

The large-scaled photovoltaic power station will have an impact on the operation of electric grid, and the capacity calculation and analysis of the PV station to meet the requirements of security and stability of electric grid are the important parts for planning and operating of PV station. The largest PV station's capacity in an independent area network was calculated; the impacts on voltages and power losses under steady-state condition were analyzed; and also, the impacts on transient stability caused by variation of PV power were analyzed in the paper. The analyses reveal that the main factors affecting the capacity of PV power station are the security and stability of the bus voltage.