SU1200365A1 - Device for controlling thyristors with antiparallel switching of high-voltage circuit breaker - Google Patents

Abstract

DEVICE FOR TIRISTOR MANAGEMENT WITH ANTI-PARALLEL TURNING ON A HIGH-VOLTAGE SWITCH by auth. No. 758462, characterized in that, in order to expand its functionality, the control pulse distribution system is complete in the form of a cylindrical insulator with a thread on the outer surface, in which it is pressed along the axis of the pick-up with supply leads in high-voltage insulation, field winding, and condition each of the individual sections, each of which is provided with a cylindrical ferromagnetic shield, is crimped with a dielectric and screwed onto the said insulator of a permanent magnet in the form of a cylinder compressed by a diele trick and screwed on insulator between said excitation winding sections.

Description

The invention relates to electrical engineering, can be used to control the thyristors of the high-voltage tap changer of a power transformer, and is an improvement of the device according to Aut. No. 758462,

The purpose of the invention is to expand the functionality of a thyristor control device with anti-parallel switching of a high-voltage switch,

Hjt The figure shows a control pulse distribution system, a slit.

The control pulse distribution system consists of separate blocks: a cylindrical insulator I with a thread on the outer surface, in which a reed 2 is pressed along the axis with supply leads 3 in high-voltage insulation, an excitation winding consisting of separate sections 4 and 5, each which is equipped with a zipindric ferromagnetic screen 6 and 7, is pressed by a dielectric 8 and screwed onto insulator 1; a permanent magnet 9 in the form of a cylinder, pressed by a dielectric and screwed onto an insulator 1.

The cylindrical insulator 1 is also provided with insulating nuts 10 and 11 for fixing the position of the blocks and fastening it to the outer panel. Sections 4 and 5 of the field winding can be interconnected

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(in series or in parallel) or be connected to various nodes of the thyristor unlocking unit. One of the sections can be continuously energized to increase the sensitivity of the control pulse distribution system.

The device works as follows

0 When sections 4 and 5 are connected together in series or in parallel and the current is supplied to the field winding, the magnetic field created by it penetrates the insulator I and

5 I influence the reed switch, it triggers it. Moving the section and the magnet along the isolator can additionally regulate the trigger threshold of the reed switch,

20 To transform the cable "1: reed switch into the opening magnet is placed in the overlap zone of the contact plates of the reed switch. So that in the absence of power in the excitation winding

25 contacts would be closed. At the same time, by applying to the winding a current that creates a magnetic field of opposite polarity, the field of the permanent magnet is weakened, which leads to the dissociation of contacts.

By supplying independent signals to each section of the field winding with the magnet installed and removed, the following logical operations can be implemented:

Claims (1)

DEVICE FOR CONTROL OF THYRISTERS WITH ANTI-PARALLEL SWITCHING OF THE HIGH-VOLTAGE SWITCH according to ed. No. 758462, characterized in that, in order to expand the functionality, the control pulse distribution system is made in the form of a cylindrical insulator with a thread on the external surface, in which a reed switch is mounted along the axis with lead-in conductors in high-voltage insulation, an excitation winding consisting of separate sections, each of which is equipped with a cylindrical ferromagnetic screen, is molded by a dielectric and screwed onto said permanent magnet insulator in the form of a cylinder pressed by a dielectric and screwed on the insulator between the above sections of the field winding. ® | with "m * 1 • w * th o © © ςπ> 1 1200 365 ϊ