find inductance and capacitance of 250km transmission line
Answers
The power transmission line is one of the major components of an electric power system. Its major
function is to transport electric energy, with minimal losses, from the power sources to the load
centers, usually separated by long distances. The design of a transmission line depends on four electrical
parameters:
1. Series resistance
2. Series inductance
3. Shunt capacitance
4. Shunt conductance
The series resistance relies basically on the physical composition of the conductor at a given temperature.
The series inductance and shunt capacitance are produced by the presence of magnetic and electric fields
around the conductors, and depend on their geometrical arrangement. 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.
13.1 Equivalent Circuit
Once evaluated, the line parameters are used to model the trans