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Method for performing a switching process in an on-load tap changer

A technology of on-load tap-changing and switching process, which is applied in the direction of instruments, transformers, regulating electric variables, etc.

Active Publication Date: 2015-12-16
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the event of a sudden interruption of the energy supply to such a drive, critical positions in the on-load tap-changer can occur during switching

Method used

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  • Method for performing a switching process in an on-load tap changer
  • Method for performing a switching process in an on-load tap changer
  • Method for performing a switching process in an on-load tap changer

Examples

Experimental program
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Embodiment Construction

[0020] exist figure 1 shows an on-load tap-changer 1 in a tapped transformer 2 according to the reactor switching principle. The tapped transformer 2 has a high-voltage side 3 and a low-voltage side 4 , wherein the on-load tap changer 2 is arranged on the high-voltage side. Both the high-voltage side 3 and the low-voltage side 4 each have three phase lines L1 , L2 , L3 , 11 , 12 , 13 . The on-load tap-changer 1 is actuated by an electric drive 5 . The control device 6 triggers the individual switching actions of the electric drive 5 . The control device 6 is connected via a controller 7 to the electric drive 5 and to a voltage monitoring device 8 (referred to below as SUV 8 ). The SUV 8 monitors the voltage of the individual phase lines l1 , l2 and l3 on the low-voltage side 4 . The electric drive 5 is supplied with energy via a line 9 via one of the phase lines 11 of the low-voltage side 4 . However, each of the phase lines 11 , 12 or 13 on the low-voltage side 4 is suit...

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PUM

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Abstract

The invention relates to a method for performing a switching process in an on-load tap changer between winding taps of a tapped transformer. The switching process for an on-load tap changer is subdivided into a plurality of phases according to the reactor switching principle. In these phases, the switching contacts in use are monitored during the actuation and are completely opened or closed by capacitors in the controller in the event of failure of the energy supply. Thereby critical switching states are prevented.

Description

technical field [0001] The invention relates to a method for carrying out a switching process between winding taps of a tap changer in an on-load tap changer. Background technique [0002] On-load tap-changers have been used worldwide for many years to switch between different winding taps of tapped transformers without interruption. So-called reactor switches, which are prevalent in North America in particular, have switching impedances which enable slow continuous switching. Generally, an on-load tap-changer according to the resistance fast switching principle comprises: a selector for the power-free call-up (Anwahl) tap changer of the corresponding winding tap to which it should be switched; The tap is actually switched to the load changer on the new preselected winding tap. In addition, load switchers typically have switching contacts and resistive contacts. In this case, the switching contacts are used for the direct connection of the corresponding winding taps to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/04
CPCH01F29/04G05F5/00
Inventor T·斯特罗夫
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG