Analysis of High Temperature Low Sag Conductors Used for High Voltage Transmission

Presently there is a continuous demand for the electric power consumption across the globe, however with the existing distribution lines are reaching critical limits of ampacity and sag, it has become difficult in finding corridors to construct new overhead lines in many industrialized countries including India. Replacing the existing ACSR conductors with high temperature high current low sag (HTLS) conductors almost of the same diameter is one of the recent methods. The present work a parametric study is conducted for steady state surface temperature, thermal time constant, change of emissivity, absorptivity etc for various ACSR and HTLS conductors using the developed computer code which is in accordance with IEEE Std.738. Some experimental study is also conducted and the results obtained are presented.