Question

Shunt conductance in overhead power transmission lines is primarily due to
1. Leakage over the insulators
2. Leakage over the conductors
3. Leakage over the poles
4. Leakage between ground and conductors

Answer 1

Correct Answer - Option 1 : Leakage over the insulators

• The shunt conductance is due to leakage currents flowing across insulators and air.
• As leakage current is considerably small compared to nominal current, it is usually neglected, and therefore, shunt conductance is normally not considered for the transmission line modeling.
• Transmission lines are an electric circuit that has resistance, inductance, and capacitance also.