Example 2.4
Consider the system given in Example 2.3. It is assumed that the system is unloaded with VS = VR = 1< 0° per unit. The voltage and current profiles for the unloaded system is shown in Fig. 2.9. The maximum voltage of 1.2457 per unit occurs at the receiving end while the maximum current of 0.7428 per unit is at the sending end. The current falls monotonically from the sending end and voltage rises monotonically to the receiving end. This rise in voltage under unloaded or lightly loaded condition is called Ferranti effect .
Fig. 2.9 Voltage and current profile over an unloaded transmission line. |
