Influence of additional dielectric coatings on the electrode surfaces on selected parameters of acoustic emission signals in high-voltage gas insulation systems

Abstract The paper is devoted to the study of impact additional dielectric coatings placed on surface electrodes operation a high-voltage insulation system with air as insulating medium. mainly focused measurement partial discharges (PDs) use acoustic emission method. Tests were conducted in various levels chamber pressure. Applicable parameters recorded signals analyzed applications developed environment MATLAB software. results analyses clearly show that presence has signal and thus indirectly PDs. reduces duration single pulse (event) increases its amplitude. Furthermore, influence degradation coating caused by individual values was analyzed. shown, however, this effect negligible.