Improvement of the technical excellence of multiparameter relay protection by combining the signals of the measuring fault detectors using artificial intelligence methods

The features of the dielectric rod defects and the rod-electrod defects of polymer insulators were investigated by using the developed complex method of contactless remote diagnostics of high-voltage insulators health, which includes the initial detection of local areas with elevated electric field gradients as well as measurement of a set of partial discharges characteristics. The radiation of extra-large partial discharges was detected and partial discharges features were investigated. According to the measurement results, a diagram was constructed for the electro-physical processes that accompany the emission of extra-large partial discharges; and the reasons for their occurrence were established.

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Effect of partial discharges on the operating condition of high-voltage insulators

E3S Web of Conferences ◽

10.1051/e3sconf/201912403001 ◽

2019 ◽

Vol 124 ◽

pp. 03001 ◽

Cited By ~ 1

Author(s):

A. V. Golenishchev-Kutuzov ◽

V. A. Golenishchev-Kutuzov ◽

D. A. Ivanov ◽

G. D. Mardanov ◽

A. V. Semennikov ◽

...

Keyword(s):

High Voltage ◽

Partial Discharges ◽

Complex Method ◽

Physical Processes ◽

Electric Field Gradients ◽

Remote Diagnostics ◽

Field Gradients ◽

Measurement Results ◽

Local Areas ◽

Polymer Insulators

The features of the dielectric rod defects and the rod-electrod defects of polymer insulators were investigated by using the developed complex method of contactless remote diagnostics of high-voltage insulators health, which includes the initial detection of local areas with elevated electric field gradients as well as measurement of a set of partial discharges characteristics. The radiation of extra-large partial discharges was detected and partial discharges features were investigated. According to the measurement results, a diagram was constructed for the electro-physical processes that accompany the emission of extra-large partial discharges; and the reasons for their occurrence were established.

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Monitoring System of High Voltage Dielectric Equipment

E3S Web of Conferences ◽

10.1051/e3sconf/202128801088 ◽

2021 ◽

Vol 288 ◽

pp. 01088

Author(s):

Aleksandr V. Golenishchev-Kutuzov ◽

Vadim A. Golenishchev-Kutuzov ◽

Dmitry A. Ivanov ◽

Anton V. Semennikov ◽

Tatyana G. Galieva

Keyword(s):

High Voltage ◽

Residual Life ◽

Electrical Equipment ◽

Partial Discharges ◽

Premature Aging ◽

Complex Method ◽

Sufficient Degree ◽

Polymer Insulators ◽

Kinetics Of ◽

Kinetics Of Reduction

Based on the research of the main causes of dielectric elements premature aging and electrical destruction of primary dielectric elements in high voltage electrical equipment the complex method for remote monitoring of said electrical equipment has been developed. The developed mobile diagnostic device is allowing detection and periodic control of the most dangerous defects. The set of diagnostic parameters of defects was experimentally obtained by using three physical methods (electromagnetic, optical, and acoustic), and allows to inspect the origin and development of defects, and to determine residual life of dielectric elements with a sufficient degree of reliability. The researched characteristics of the kinetics of reduction in operating parameters of polymer insulators permitted the development of the detection of accelerated increase in defects under the influence of ultra-large partial discharges.

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Environmental considerations

10.1093/oso/9780199565092.003.0012 ◽

2017 ◽

Author(s):

A. G. Wright

Keyword(s):

Magnetic Fields ◽

Collection Efficiency ◽

Liquid Argon ◽

Harsh Environments ◽

Oil Well ◽

High Permeability ◽

Electric Field Gradients ◽

Field Gradients ◽

High Shock ◽

Power Spectral

Magnetic fields, with a magnitude comparable with that of the earth (10−4 tesla), affect trajectories of electrons and hence gain and collection efficiency. The inclusion of a high-permeability shield usually offers sufficient protection. Photomultiplier (PMT) performance is affected by electric field gradients generated by the proximity of a metal housing. The design criteria of such housings are discussed. Strong magnetic fields of the order of a tesla require special devices. Operation in harsh environments such as those encountered in oil well logging requires performance at high temperature (200 °C) and in situations of high shock and vibration expressed in terms of power spectral density. Rugged PMTs can meet all these requirements. Applications at cryogenic temperatures, such as liquid argon, can also be met with special PMTs.

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