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Device for testing high-voltage equipment

A technology for technical equipment and inspection devices, applied in measurement devices, output power conversion devices, transformer testing, etc., to achieve the effect of reducing weight

Active Publication Date: 2012-01-25
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Significant increases in inspection power are not possible with this type of inspection equipment

Method used

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  • Device for testing high-voltage equipment
  • Device for testing high-voltage equipment
  • Device for testing high-voltage equipment

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 A circuit diagram of a device described in DE 102007059289.4-35 but not disclosed for testing high-voltage technical equipment is shown. The static frequency converter 2 is supplied with AC voltage from the grid 4 , and the AC voltage first reaches the DC rectifier 10 . In addition, the frequency converter 2 has a first output end 21 , a second output end 22 and a third output end 23 . Static frequency converter 2 is a voltage link frequency converter with digital regulation. Each output 21 , 22 and 23 of the static frequency converter 2 leads to the filter device 6 , in particular to the primary side 11 / 1 of the filter transformer 11 . The filter transformer 11 includes a primary side 11 / 1 and a secondary side 11 / 2. The secondary side 11 / 2 of the filter transformer 11 is connected to the filter capacitors C1 , C2 and C3 connected in a star connection 13 . The star connection formed by the star connection is connected to ground 16 on its side. The filter...

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PUM

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Abstract

The present invention relates to a device for testing high-voltage equipment, particularly power transformers (15) or inductors. According to the invention, the required potential separation (11 / 1,11 / 2) for suppressing asymmetrical interferences is shifted to the input side (2) of the static frequency inverter (18,19,20), that is, to the grid side (4).

Description

technical field [0001] The invention relates to a testing device for high-voltage technical equipment, especially a testing device for power transformers or choke coils. Background technique [0002] In this regard, it has proven to be advantageous to use static frequency converters instead of rotary converters in high-voltage technical equipment testing installations because of their dynamic characteristics, wear, weight and availability compared to rotary converters There are obvious advantages. Among them, the inverter must generate a sinusoidal, symmetrical AC voltage with a distortion factor of less than 5%. Induced voltage verification by performing partial discharge tests is used when verifying the insulation system of power transformers. In the presence of strong non-uniform field distributions in high-voltage insulating regions or along air segments, the breakdown field strength of the material can be locally exceeded. In this case a partial electrical breakdown ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12H02M1/12
CPCG01R31/1227G01R31/027G01R31/62H02M1/123
Inventor R·阿诺夫斯基A·蒂德
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG