Short lines are defined as lines with length $\le$ 80 km or operating voltage below 20 kV.

The shunt admittance $Y$ is usually ignored in the ABCD parameter matrix for short lines.

If $Y$ is considered, the model is referred to as the Nominal-$\pi$ or T model for medium lines.

The receiving end lumping allows for a simple series impedance calculation.

Simplifies power flow calculations

Provides sufficiently accurate results for short distances

Reduces complexity in relay setting calculations

Inaccurate for long lines where distributed parameters are critical

Neglects the phase shift introduced by capacitive charging currents

Distribution network modeling

Short-distance industrial feeder lines

Preliminary power system stability studies

For lines between 80 km and 250 km, the Nominal-$\pi$ or Nominal-T models are used where capacitance is split.

Option A is incorrect because charging current originates throughout the line; placing it at the sending end ignores line impedance drop effects.