Abstract
The article describes a complex of non-contact methods for remote diagnosis of high-voltage insulators as well as the two-channel method for remote diagnostics of the operating state of high-voltage insulators, based on the registration of partial discharges by electromagnetic and acoustic sensors. The presented device allows visual inspection and searches for faulty high-voltage equipment and a remote non-contact method of recording high-intensity electric fields of industrial frequency and their spatial distribution based on the electro-optical effect. The scheme of using the system for monitoring and diagnosing the technical condition of high-voltage support insulators of open switchgear is described. The results of experimental studies confirm the possibility of industrial applicability of the proposed method for non-contact remote diagnostics of the state of high-voltage insulators under operating voltage.
Highlights
Golenishchev-Kutuzov, A.V.; Galieva, Keywords: remote diagnosis; partial discharges; nondestructive testing; high-voltage insulators; photonic crystal; insulation defects
6 illustrates a flowchart of the measuring device, which helps tovia more understand the process of partial discharges discharges (PDs) registration by the electromagnetic and acoustic methods
This paper presents the method that we developed for contactless remote diagnostics of the high-voltage insulators (HVI) condition
Summary
Golenishchev-Kutuzov, A.V.; Galieva, Keywords: remote diagnosis; partial discharges; nondestructive testing; high-voltage insulators; photonic crystal; insulation defects. In the context of electric power industry rapid development, it starts facing the problem of recording electric fields of industrial frequency (50–60 Hz), as a part of the ultra-low-frequency range of the radio frequency spectrum, which is becoming more common, both in industrial conditions and in everyday life. These fields are generated mainly by power lines, open switchgear, bus bars, various high-voltage devices, transformers, high-voltage bushings, protection and automation devices, bus bars, and switches.
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