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On-load tap changer comprising semiconductor switching elements

A technology of tap changer and switch element, applied in the direction of electrical switches, electrical components, instruments, etc., can solve problems such as high cost and high voltage conduits

Active Publication Date: 2012-02-15
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, costly high voltage conduits are required due to the transformer wall
In summary, the known load bypasses lead to permanent loading of the power electronics

Method used

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  • On-load tap changer comprising semiconductor switching elements
  • On-load tap changer comprising semiconductor switching elements
  • On-load tap changer comprising semiconductor switching elements

Examples

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Embodiment Construction

[0016] exist figure 1 A tap changer comprising a power electronic load changeover switch 1 is shown in . Two semiconductor switches 2 and 3 are provided here, each of which has an electrical input 4 or 5 and a common electrical output 6 . The load changeover switch 1 thus consists of two paths which are each realized by the semiconductor switch 2 or 3 : one for the disconnecting side and one for the receiving side. The electrical inputs 4 , 5 and the electrical output 6 are introduced into a mechanical contact system 8 by means of bushings 7 . The mechanical contact system 8 includes a contact slide 9 which is only outlined in dashed lines in the figure. The contact slide 9 includes contact bridges 10 , 11 , 12 , 13 which are fixedly arranged on the contact slide 9 . The contact bridges 10 to 13 are electrically conductive, but isolated from one another; they have known contact balls, sliders or the like, which are only outlined in the figures, at their ends. The contact b...

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PUM

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Abstract

The invention relates to an on-load tap changer comprising semiconductor switching elements for uninterrupted switching between fixed tap changer contacts which are electrically connected to winding taps of a tapped transformer. Each of the fixed tap changer contacts can be connected to a charge diverter either directly or, during switching, via the semiconductor switching elements that are connected therebetween. According to the invention, the charge diverter has fixed, divided diverting contact pieces in order for the semiconductor switching elements to be electrically isolated from the transformer winding during stationary operation.

Description

technical field [0001] The invention relates to a tap changer with semiconductor switching elements for switching without interruption between coil taps of a tapped transformer. To this end, the invention relates to a tap changer based on the load selector principle. Background technique [0002] Tap changers are known in various implementations; they are in principle load selectors for the reactive selection of the new coil taps to which they should be switched and devices with separate selectors and separate loads for the subsequent actual switching switch to distinguish. Publication "Axel : On-Load Tap-Changers for Power Transformers", MR-Publikation 2000 provides a good overview of various structures. Special features are introduced on page 7f. [0003] Regardless of the design, all tap-changers have a common load bypass, which creates a connection to the transformer (usually the main winding) independently of the current position of the tap-changer. [0004] For ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/00H01F29/04
CPCH01F29/04H01H9/0005H01H9/548H01H2009/544G05F1/20H01H9/54
Inventor O·布吕克尔D·多纳尔H-H·莱克曼-米斯克
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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