Application of phased permanent magnet mechanism in on-load tap-changer and no-arc transferring on-load tap-changer

A technology of on-load tap-off and permanent magnet mechanism, which is applied to power devices, electrical switches, high-voltage/high-current switches, etc. inside the switch, which can solve the problem of transition contacts, main on-off contacts burning and easily polluting transformer oil. , shorten the life of vacuum bubbles, etc., to achieve the effect of prolonging life, small dispersion of action time, and few mechanical parts

Active Publication Date: 2010-08-18
SHANGHAI HUAMING POWER EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The applicant invented a vacuum bulb group to replace the copper-tungsten contact group of the existing on-load tap-changer, so that the on-load tap-changer actually becomes a vacuum on-load tap-changer, and solves the problem in the transition contact part When the main on-off contact and the transition contact are disconnected, an arc is generated, causing the transition con...

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  • Application of phased permanent magnet mechanism in on-load tap-changer and no-arc transferring on-load tap-changer
  • Application of phased permanent magnet mechanism in on-load tap-changer and no-arc transferring on-load tap-changer
  • Application of phased permanent magnet mechanism in on-load tap-changer and no-arc transferring on-load tap-changer

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Embodiment Construction

[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0027] The on-load tap-changer for phase-controlled arcless switching of the present invention is composed of a switch with current transfer and a tap selector for pre-selecting the tap position without current. The diverter switch includes the main contact part which plays the role of long-term current flow and the transition part which plays the role of transition conduction.

[0028] see figure 1 , the transition part includes a control device 100 , a drive device 200 , several execution units 300 and several transition switching elements 400 . see figure 2 , the control device 100 includes a signal acquisition unit 110, a processing unit 120 and a signal output unit 130. The signal acquisition unit 110 collects the switching control signa...

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Abstract

The invention discloses an application of an on-load tap-changer. The application is characterized in that a control device is used to detect the current signal of a transformer, after a switching control signal is inputted in the control device, the control device transmits a signal to a drive device when the current signal nearly crosses zero, the drive device controls the on/off of a vacuum tube used for transition through an executive unit, thus the no-arc transferring of the on-load tap-changer can be realized. The invention also discloses a phased no-arc transferring on-load tap-changer, thus when the current signal of the transformer crosses zero, the no-arc transition transferring of the on-load tap-changer can be realized, the service life of the transition transferring element is prolonged and the transformer oil in a transfer switch oil chamber can not be polluted.

Description

technical field [0001] The present invention relates to the application of a phase-controlled permanent magnet mechanism and a device obtained from the application, especially the application of the phase-controlled permanent magnet mechanism in an on-load tap changer and the on-load tap of phase-controlled arcless switching Switch, this application realizes the arcless switching of the on-load tap-changer by finding the zero point of the AC waveform. Background technique [0002] The phase-selection permanent magnet mechanism was first proposed in the 1970s. Its technical core is to reduce or even eliminate the relevant electromagnetic transient phenomena by controlling the initial phase angle of the voltage or current when the switch is opened and closed. With the progress of modern electrical manufacturing level and microelectronic automatic control technology, this technology has been applied to many aspects of power transmission and distribution systems. For example, i...

Claims

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Application Information

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IPC IPC(8): H01F29/04H01H1/56H01H3/22H01H33/666
Inventor 肖日明肖毅
Owner SHANGHAI HUAMING POWER EQUIP CO LTD
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