Laboratory model to teach Surge Impedance Loading

摘要

This paper explains the development of laboratory model to teach Surge Impedance Loading to the undergraduate students. Simulation software used for teaching power systems fails to give physical sense to the students. The scaled down model of transmission line is developed at the Electrical Engineering development of Amrita school of Engineering, Coimbatore. The flat voltage profile is observed in the line when the line is loaded to Surge Impedance Loading. Further the Surge Impedance Loading and phase shift are studied during series and shunt compensation. Shunt capacitor compensation improves only Surge Impedance Loading but increases the phase shift. Series capacitor compensation improves Surge Impedance Loading and also stability by decreasing the phase shift.