Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device

Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device

Bibliographic Details
Parent link:IOP Conference Series: Materials Science and Engineering
Vol. 189 : Modern Technologies for Non-Destructive Testing.— 2017.— [012018, 6 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра электроснабжения промышленных предприятий (ЭПП)
Other Authors: Muravlev I. O. Igor Olegovich, Surkov M. A. Michael Aleksandrovich, Tarasov E. V. Evgeny Vladimirovich, Tsoggerel Kh., Uvarov N. F.
Summary:Title screen
The article describes the experimental results on the breakdown of the high-speed flow of transformer oil. In real conditions, the flow moves in the contact gap of a high-voltage explosive switch with speeds from 67 to 152 m /s. The geometry of the contact gap is sharply inhomogeneous and forms turbulence in the flow zone. In the arc chute medium the air inclusions pass from the dissolved state to the gaseous and the emerging bubbles enter to the electric field. Breakdown occurs, mainly through gas inclusions. In the moment, the gradient of the breakdown voltage is reduced by 91.6% compared to the static state of the oil. The experiments were carried out on the model of a high-voltage explosive switch, connected to the power circuit of the surge generator. The probing of the gap was made by a standard pulse of 1.5 / 50 [mu]s. As a result, the dependences of the gradient of the breakdown voltage on the flow rate of the transformer oil for the usual geometry of the high-voltage explosive switch contact system are constructed.
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
диэлектрическая прочность
трансформаторные масла
дугогасительные устройства
взрывные выключатели
газовые включения
пробивные напряжения
пробой
Online Access:http://dx.doi.org/10.1088/1757-899X/189/1/012018
http://earchive.tpu.ru/handle/11683/38508
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=654814

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