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Safety apparatus and monitoring method for a power transformer, and related power transformer

A technology for power transformers and safety equipment, applied in the field of power transformers, can solve problems such as abnormality

Inactive Publication Date: 2014-04-09
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, rapid movements of transformer fluid—also manifested as rushes or flows—may be produced by internal arcing, short circuits, or hot spots; these rapid movements indicate possible abnormal or dangerous conditions and must be given due attention

Method used

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  • Safety apparatus and monitoring method for a power transformer, and related power transformer
  • Safety apparatus and monitoring method for a power transformer, and related power transformer
  • Safety apparatus and monitoring method for a power transformer, and related power transformer

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Embodiment Construction

[0026] It should be noted that in the following detailed description, from the point of view of structure and / or function, the same or similar components—regardless of whether they are shown in different embodiments of the present disclosure—have the same reference numerals; Note that in order to clearly and accurately describe the present disclosure, the drawings are not necessarily to scale and certain features of the disclosure may be shown in somewhat schematic form.

[0027] figure 1 An exemplary power transformer 101 is shown comprising a tank 102 filled with a known type of cooling / insulating liquid 103 (hereinafter referred to as cooling liquid 103 for purposes of brevity), such as mineral or Vegetable oil; an expansion tank or storage tank 104, which is also filled with cooling liquid 103, is mechanically connected to the tank 102 and sits on top of the tank 102 itself as shown.

[0028] Appropriate piping 105 enables fluid communication between storage cabinet 104 a...

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Abstract

The invention provides a safety apparatus suitable to be associated to and a method for monitoring a liquid-filled power transformer wherein there is provided a sensing device associated to an electronic unit. The sensing device is suitable to be at least partially immersed into the liquid and comprises at least one movable part displaceable by movements of the liquid; the electronic unit detects signals indicative of the actual position of the movable part and is arranged to elaborate, based on the detected signals, data related to actual conditions of the transformer and / or of its cooling liquid.

Description

technical field [0001] The present disclosure relates to a safety device for a related liquid-filled power transformer, a related method for monitoring a power transformer, and a power transformer comprising the safety device. Background technique [0002] It is generally known in the art to use electrical induction devices, such as power transformers, which utilize electromagnetic induction to properly transmit and distribute electrical power onto electrical wires. [0003] Most commonly, power transformers include moving parts such as a magnetic core consisting of one or more legs or core legs connected by a yoke, which together form one or more core windows; for each phase, a winding The stem is arranged with multiple windings, such as low voltage windings, high voltage windings and the like. [0004] Due to the inherent structural features and functions of these devices, important aspects of power transformers involve the electrical insulation between the multiple compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/14H01F27/40
CPCH01F2027/404H01F27/402H01F27/12
Inventor 卡洛·卡罗洛安德烈亚·托宁埃马努埃莱·兰波尼
Owner ABB TECH AG
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