a) A solar photovoltaic (PV) farm is connected to a transmission network by using a 100 km a three-phase, balanced, wye-

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A A Solar Photovoltaic Pv Farm Is Connected To A Transmission Network By Using A 100 Km A Three Phase Balanced Wye 1 (53.02 KiB) Viewed 32 times

a) A solar photovoltaic (PV) farm is connected to a transmission network by using a 100 km a three-phase, balanced, wye-connected transmission line. The line is rated at 115 kV (line- neutral) with r= 0.1 0/km and x = 0.3 2/km. The voltage at the PV farm- end of the line is controlled to be anywhere between +10% and -6% of the nominal voltage while the transmission network-end is maintained at 1 pu. How much reactive power should the loads in the main transmission network draw in order to receive maximum real power from the PV farm, if the voltage phase angle difference between the line ends is maintained at 180? [3 Marks] b) Draw the receiving-end power circle diagram for question 3(a). Clearly indicate the following on the diagram. [4 Marks] line impedance angle o, - voltage phase angle difference 8, - receiving-end real power (in kW), receiving-end reactive power (in kVar), - receiving-end apparent power (in kVA), radius and its length (in kVA), and - centre and the length (in kVA) from the coordinate plane origin to the centre of the circle.