Answer to Question #207658 in Electrical Engineering for Tumelo

Question #207658

4. Two power stations, A and B, which are in phase at 66 kV, supp!y respective

inductive loads of 455 MVA at an inductive power factor of 0.766 and 555

MVA at a lagging power factor of 0.88295 respectively. An inter-connector

with an impedance of 4.45∠75 0 ohms per line, links station A with station B.

By means of a phase regulator at A, the phase angle of the voltage at A is

advanced in order to increase the loading of station A to 620 MW.

4.1 Use standard formulae and calculate the angle of advance at power station A.

(16.060)

4.2 Calculate the transmission line active power loss.

(19.765 MW)



1
Expert's answer
2021-06-18T07:54:18-0400

4.1 The angle of advance at power station A.

Solving the above equation we get

4.2 The transmission line active power loss.

Power at B

We can recall that Power at A = 620 MW

Therefore, Power loss


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