Dielectric Loss Measurement Algorithm Based on Oscillating Wave Testing Technology

Dielectric loss is one of the important indicators to evaluate the insulation status of power cables. Oscillating wave voltage, as a new emerging detection voltage, has a wide range of applications in the field of partial discharge detection due to its good equivalence with power frequency AC voltage. However, the oscillation wave voltage has not been deeply developed for dielectric loss measurement work. Integrated detection has limitations. In order to solve the current limitations, this paper proposes a method for measuring cable dielectric loss based on oscillating wave testing technology. During each working period of the oscillating wave test system, the voltage and current data of the cable sample are collected, and then the waveform parameters are extracted through data post-processing to obtain accurate dielectric loss. Finally, the simulation results verify the feasibility and effectiveness of the method.