Partial Discharge Propagation Analysis using Finite Difference Time Domain Technique

Objectives: To analyze the effect of geometry on Partial Discharge (PD) wave propagation. Methods/Statistical Analysis: A Finite Difference Time Domain (FDTD) method has been implemented for simulation of Partial Discharge wave propagation in prototype transformer like geometry. FDTD method provides a solution for a time as well as space regions. In this technique electric field and magnetic field values are calculated in a leapfrog manner. In this paper, Transverse Magnetic (TM) mode has been considered for two-dimension simulation. Findings: This work is an effort to understand effects of obstacles on partial discharge wave propagation. In this paper signal propagation in circular, octagonal, hexagonal and point shaped obstacles has been analyzed. Simulation work extended with aluminium ceramic, iron and mica material to understand the effect of the material on signal propagation. Application/Improvements: Improvisation is possible in the performance of PD detection setup after analyzing and comparing effects of obstacles shape and material on PD signal wave propagation.