A 20 MW utility scale solar PV plant consisting of 160,000 PV panels is connected to the electricity grid via 10 central inverters and LV/MV step transformers via two pairs of collector circuits and a single interconnecting MV/HV power transformer.Assuming that each of the inverters are rated at 2.2 MVA and +/-0.9 power factor, the LV/MV transformers are rated at 2.5 MVA, 660/24,000 volts, 6% reactance and negligible resistance, the collector system has an equivalent impedance of Z = 0.13 + j0.3 ohm and the interconnecting transformer is rated at 25 MVA, 10% reactance and negligible resistance:

Determine the real power, reactive power and power factor at the POI, if the inverters are operating at rated MVA and PF with a terminal voltage of 700 volts.

If each PV panel is rated at 175 watts, what is the peak power rating of this PV plant and its DC to AC ratio. What is the significance of the DC to AC ratio?