Methodology and device for diagnostics of high-voltage insulators based on continuous recording of the spatial level of electromagnetic radiation of partial discharges

Abstract

THE PURPOSE. Development of diagnostic methods for high-voltage insulators in operation based on continuous recording of electromagnetic radiation. Hardware and software implementation of the device based on this technique. Carrying out experimental researches. METHODS. Received signal strength indicator measuring method of electromagnetic signals and method of determining the attenuation of electromagnetic radiation in space were used. RESULTS. The article describes relevance of the topic, considers various physical methods for registering partial discharges (PD) and their localization. Studies of the average signal level of defective and non-defective high-voltage insulators on load operation (10-15 kV) were carried out using the laboratory stand. An experiment was carried out to determine the space attenuation of a local signal from the PD. CONCLUSION. A technique for diagnosing high-voltage insulators during operation has been developed. This technique is based on continuous monitoring of electromagnetic radiation from partial discharges. Method for diagnosing high-voltage insulators makes it possible to monitor the insulation condition remotely and continuously.

Keywords

• diagnostic method for insulators
• non-destructive testing of insulation
• partial discharges
• high-voltage dielectric elements