Effect of Interfacial Condition between Film and Earthed Electrode on Space Charge Measurement

doi:10.18494/sam.2017.1543

Abstract

Highlights

To reduce power transmission costs, power apparatuses, which are often composed of polymeric insulating materials, are being downsized
One space charge evaluation technology is the pulsed electroacoustic (PEA) method, which detects acoustic pressure due to the charge in the bulk or the induced charge at the interface between the film and the electrode.[3]. Because the acoustic properties of the entire system must be understood to improve the precision of the PEA method, a space charge measurement system equipped with a measurement function for the acoustic properties has been developed.[4]. In this study, to investigate the effect of the interfacial condition between the earth electrode (EE) and the
Film on the space charge measurement, this system was used to measure the acoustic impedance of the film from the EE side, and the space charge distribution affected by the interfacial condition between the EE and the film was investigated

Summary

Introduction

To reduce power transmission costs, power apparatuses, which are often composed of polymeric insulating materials, are being downsized. Their designed electric stress is approaching the intrinsic electric breakdown stress. Film on the space charge measurement, this system was used to measure the acoustic impedance of the film from the EE side, and the space charge distribution affected by the interfacial condition between the EE and the film was investigated

Methods

Results

Conclusion