Analysis of the deconvolution and reconstruction of PEA signals for HV insulation materials

Abstract

This paper investigates the necessary steps required to analyze the results of a PEA measurement. It is shown, that in a mixed frequency-space presentation it can be seen as a two-step process of deconvolution of the signal and reconstruction of the space charge using the acoustic Green's function. It is discussed how the knowledge of the expected signal can be used to improve the deconvolution and how attenuation and dispersion effects can be taken into account in an analytic approach. The techniques are finally applied to both simulated and real measurement data.