Abstract
Cables form an integral part of high voltage power transmission and hence analysis of defects arising due to discharges in cables is of utmost importance. Measurement of partial discharge in high voltage equipments are often carried out nowadays for the condition monitoring of the device as well as to test the performance of the insulation of the system. In high voltage cables partial discharge pulses originated at a particular site in the cable can propagate throughout the entire length of the cable. A better understanding of this pulse propagation can be achieved through simulation. Hence in this paper a comparative study is conducted on two high voltage cable models one with and the other without a spherical slot in finite element analysis (FEA) software which is COMSOL MULTIPHYSICS and the propagation characteristics of the pulse injected at one end of the cable is studied and analyzed. From both the models the velocity of propagation pf the pulse has been calculated. The result is verified by developing a similar model in PSCAD software and the results have been compared.
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