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Example 1-3 The nominal RMS line-line voltage at bus in a three phase system from a...

Example 1-3

The nominal RMS line-line voltage at bus in a three phase system from a wind farm is 230kV when it is supplying a load of P +jQ=1600MW +j800Mvar.

The single line equivalent AC system impedance seen by the bus can be approximated to be purely inductive with

          Z =j5.0 ohms.

  • Calculate the percentage change in the bus voltage magnitude for a 15 % increase in active power
  • Calculate the percentage in bus voltage for magnitude for a 15 % increase in reactive power
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