Method and device for determining and/or monitoring the breakdown voltage of a transformer oil

A technology of transformer oil and breakdown voltage, applied in measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve problems such as reduced degree of polymerization, off-line determination, and non-permanent

Active Publication Date: 2019-06-04
PASSERRO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is therefore not surprising that a large number of different methods and devices are known from the prior art for determining the breakdown voltage of transformer oils, which determine the dissolved gas and/or water content in transformer oils, since both are known to have a significant effect on breakdown voltage. Voltage has a substantial effect and thus indirectly affects the lifetime and/or utilization time of the transformer
The reason for this is

Method used

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  • Method and device for determining and/or monitoring the breakdown voltage of a transformer oil
  • Method and device for determining and/or monitoring the breakdown voltage of a transformer oil
  • Method and device for determining and/or monitoring the breakdown voltage of a transformer oil

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Embodiment Construction

[0117] figure 1 An axonometric view of a first embodiment of a device 100 according to the invention for determining and / or monitoring the breakdown voltage of transformer oil is shown, realized in the form of a stick 100 . Such as figure 1 As clearly seen in FIG. 2 , the stick 100 has a sensor portion 110 provided with a shield 111 . In addition, an attachment portion 120 is provided on the stick 100 for secure attachment of the stick 100 to the transformer, said attachment portion 120 being realized in the form of a 1.5 inch pipe thread. The housing 150 of the wand 100 protects the electronics, in particular, against undesired electrical and / or electromagnetic effects, as well as serves as insulation and as a communication means, and may be made of any suitable material. Preferably, the housing 105 is made of a metal material that ensures electromagnetic compatibility.

[0118] exist figure 2 In , an alternative configuration of the first embodiment of the device 100 ac...

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Abstract

The invention relates to a method for determining and/or monitoring the breakdown voltage of a transformer oil, comprising the following steps: a) carrying out an acoustic impedance measurement of thetransformer oil, wherein the impedance of a medium, which is arranged partially or completely in the transformer oil and which is suitable for vibrating itself and/or transmitting vibration to the transformer oil, is determined in at least one frequency band of a defined frequency width; b) calculating a resonator quality factor for the frequency band based on the determining carried out in stepa); c) calculating an acoustic imbalance of the transformer oil based on the calculation carried out in step b); and d) determining the breakdown voltage of the transformer oil based on the calculation carried out in step c). The invention also relates to a device (100, 200) for determining and/or monitoring the breakdown voltage of a transformer oil.

Description

technical field [0001] The invention relates to a method and a device for determining and / or monitoring the breakdown voltage of transformer oil according to the preambles of the independent claims. Background technique [0002] Devices from high-voltage technology, such as transformers, capacitors, crowbars and / or switches, are known from the prior art and are used in particular, but by no means exclusively, to ensure a continuous power supply. Among these installations, transformers are among the most important and most expensive equipment in the electrical energy supply. In order to ensure a continuous and fault-free supply of electrical energy and to avoid economic losses, it is important to detect faults that potentially occur in the operation of transformers and may cause interruptions in time to be able to initiate appropriate measures for correction. [0003] Usually, a combination of liquid insulation and solid insulation is used as insulation in transformers. For...

Claims

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Application Information

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IPC IPC(8): G01H15/00G01H3/04G01N29/00
CPCG01H3/04G01H15/00G01N29/024G01N29/032G01N29/346G01N29/348G01N29/4436G01N2291/011G01N2291/015G01N2291/044G01N33/28G01N2291/0226
Inventor 马蒂亚斯·若贝尔
Owner PASSERRO GMBH
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