Electrical Engineering Virtual Power Lab Experiments

Study of the Ferranti Effect in a Transmission Line or Cable

Procedure

  1. Select initial length of line (say 30 kms).
  2. Start the motor-generator set.
  3. Note down the sending end voltage Vi, sending end current Ii and receiving end voltage Vo.
  4. Disconnect the supply of motor-generator set.
  5. Increase the length of line.
  6. Repeat the steps 2-5.

Connection Diagram of Experiment

Experimental Setup for studying the Ferranti Effect

Fig 9.1: Experimental Setup for studying the Ferranti Effect

Observation Table

S. No. Length of the line (km) Sending end voltage Vi (volts) Receiving end voltage Vo (volts) Sending end current Ii (amp) Receiving end current Io (amp)
1 30
2 60
3 90
4 120
5 150
6 180
7 210
8 240
9 270
10 300
11 330
12 360

Effect of Transmission Line Length Graphs

Sending End Voltage

Sending End Voltage Graph

Receiving End Voltage

Receiving End Voltage Graph

Charging Current

Charging Current Graph

Change in Voltage (ΔV)

Voltage Change Graph

Video for experiment:




Experiment 9. To Study the Ferranti Effect of a transmission line/cable.
Video-1




Experiment 9. To Study the Ferranti Effect of a transmission line/cable.
Video-2