INSTALLATION FOR STUDYING TRANSIENT CURRENTS IN DIELECTRIC LIQUIDS

Karasev Gennady; Volnianska Iryna; Makarov Vladimir; Karasev Alexey

doi:10.31435/rsglobal_ws/30012022/7752

Karasev Gennady к.ф.-м.н., доцент кафедры фундаментальных и естественных дисциплин, Приднепровская государственная академия строительства и архитектуры, Днепр, Украина https://orcid.org/0000-0003-0922-3692
Volnianska Iryna старший преподаватель кафедры фундаментальных и естественных дисциплин, Приднепровская государственная академия строительства и архитектуры, Днепр, Украина https://orcid.org/0000-0001-6572-3056
Makarov Vladimir к.ф.-м.н., доцент кафедры прикладной радиофизики, электроники и наноматериалов, Днепровского национального университета имени Олеся Гончара, Днепр, Украина
Karasev Alexey к.т.н., доцент кафедры строительной, теоретической механики и сопротивления материалов, Приднепровская государственная академия строительства и архитектуры, Днепр, Украина https://orcid.org/0000-0002-1294-8021

DOI: https://doi.org/10.31435/rsglobal_ws/30012022/7752

Keywords: dielectric liquid, space charges, analog to digital converter, electrometric amplifier, charge carrier mobility, reverse currents, transient currents

Abstract

An experimental automated installation based on the Raspberry Pi3 Model B mini-computer and software for it is developed. By means of this installation, it is possible to carry out research of charging and discharging currents at different times in the range from 5·10-2 s to 4,5·103 s. Reversible currents up to voltages of 5 kV are studied using vacuum circuit breakers BB-5 (or BB-20, up to 20 kV). The installation allows detecting the accumulation of space charges both in the nearelectrode regions and in the volume of dielectric liquids. The installation allows to determine the mobility of charge carriers by the method of transient currents. The current flowing through the dielectric liquid is recorded by an electrometric amplifier, V7-30 or U5-11, which measures currents are in the range from 10-4 A to 10-12 A.
The presented installation based on modern blocks and elements allows not only to carry out experimental studies with dielectric liquids of various types at the proper level, but also significantly improves the quality and efficiency of such studies.

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