Nominal- T Representation

In this representation the shunt admittance is placed in the middle and the series impedance is divided into two equal parts and these parts are placed on either side of the shunt admittance. The nominal-T representation is shown in Fig. 2.4. Let us denote the midpoint voltage as V_M . Then the application of KCL at the midpoint results in

Fig. 2.4 Nominal-T representation.

Rearranging the above equation can be written as

(2.16)

Now the receiving end current is given by

(2.17)

Substituting the value of V_M from (2.16) in (2.17) and rearranging we get

(2.18)

Furthermore the sending end current is

(2.19)

Then substituting the value of V_M from (2.16) in (2.19) and solving

(2.20)

Then the ABCD parameters of the T-network are

	(2.21)
	(2.22)
	(2.23)