TY - GEN

T1 - Improvement of Voltage Distribution Uniformity Factor for Glass Suspension Insulator String

T2 - 2023 Belarusian-Ural-Siberian Smart Energy Conference (BUSSEC)

AU - Popovtsev, Vladislav

AU - Patrakov, Yurii

AU - Sokolov, Igor

N1 - The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged.

PY - 2023

Y1 - 2023

N2 - Based on the overhead lines and outdoor switchgear operation and maintenance, it is known that contamination and subsequent moisturizing of the insulators surface lead to the surface discharge development and consequently discharge voltage of the insulators is reduced. It is necessary to ensure uniform distribution of the voltage applied in the axial direction of the insulation when designing suspension insulator string. The article examines the moisturizing influence and coatings applied on the area of the greatest electric field non-uniformity on the voltage distribution along a contaminated suspension string of glass insulators. Four coatings are considered: silicon sealant, insulating varnish, insulating enamel and epoxy conductive glue. The test phase voltage, assumed to be 115/V3kV in the present research, is varied in steps of 2.5% from 80% to 120%. The number of insulators in the suspension string is varied from 13 to 9. The dependencies of voltage distribution non-uniformity factor on applied test voltage are obtained. Conclusions about the proposed coatings performance for the contaminated suspension insulator string under study are drawn. © 2023 IEEE.

AB - Based on the overhead lines and outdoor switchgear operation and maintenance, it is known that contamination and subsequent moisturizing of the insulators surface lead to the surface discharge development and consequently discharge voltage of the insulators is reduced. It is necessary to ensure uniform distribution of the voltage applied in the axial direction of the insulation when designing suspension insulator string. The article examines the moisturizing influence and coatings applied on the area of the greatest electric field non-uniformity on the voltage distribution along a contaminated suspension string of glass insulators. Four coatings are considered: silicon sealant, insulating varnish, insulating enamel and epoxy conductive glue. The test phase voltage, assumed to be 115/V3kV in the present research, is varied in steps of 2.5% from 80% to 120%. The number of insulators in the suspension string is varied from 13 to 9. The dependencies of voltage distribution non-uniformity factor on applied test voltage are obtained. Conclusions about the proposed coatings performance for the contaminated suspension insulator string under study are drawn. © 2023 IEEE.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85178029926

U2 - 10.1109/BUSSEC59406.2023.10296398

DO - 10.1109/BUSSEC59406.2023.10296398

M3 - Conference contribution

SN - 979-835035807-0

SP - 150

EP - 155

BT - Proceedings of the 2023 Belarusian-Ural-Siberian Smart Energy Conference, BUSSEC 2023

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 25 September 2023 through 29 September 2023

ER -