Cooling arrangement for a high voltage power device

A technology of high-voltage power equipment and cooling devices, which is applied in the direction of transformer/inductor cooling, transformer/inductor parts, heat storage equipment, etc., can solve the problems that the aging of insulating materials affects the expected life of high-voltage power equipment, and achieve flexible cooling, Effect of increasing thermal inertia

Active Publication Date: 2021-02-12
HITACHI ENERGY SWITZERLAND AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This influences the life expectancy of high-voltage electrical equipment, for example through the aging of insulation materials

Method used

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  • Cooling arrangement for a high voltage power device
  • Cooling arrangement for a high voltage power device
  • Cooling arrangement for a high voltage power device

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Embodiment Construction

[0039] The present invention relates to high-voltage electrical equipment, such as power transformers such as transformers, power switches, power converters, reactors or electric motors, cooled by using an insulating fluid such as transformer oil.

[0040] The invention relates more particularly to a cooling arrangement for such high-voltage electrical equipment, comprising a cooling device. In some variants, it also includes a control device controlling the valve of this cooling device. The invention also relates to a high-voltage electrical installation comprising a high-voltage electrical device, an enclosure for accommodating the high-voltage electrical device and such a cooling device.

[0041] In FIG. 1, a side view of an exemplary first enclosure for housing such a voltage electrical device is shown. For example, the high-voltage power equipment is a transformer, so the first enclosure is the transformer box 10 . The transformer tank 10 has at least one wall 12 , a co...

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Abstract

The invention is concerned with a cooling arrangement for a high voltage power device (24) in an enclosure (10) and immersed in an insulating fluid (44). The arrangement comprises a cooling device forplacing in the interior of the enclosure and having a channel (32) formed as a duct for the insulating fluid the duct having a first wall comprising a phase change material (34) for cooling insulating fluid (44) that passes through the channel. The invention is also concerned with a method of operating a valve of a cooling device in such a cooling arrangement.

Description

technical field [0001] The present invention generally relates to high voltage electrical equipment. More specifically, the invention relates to a cooling device for such a high-voltage electrical device and a method of operating a valve of the cooling device in such a cooling device and a high-voltage electrical device comprising such a cooling device. Background technique [0002] Heat losses occurring during operation of high voltage electrical equipment in enclosures such as oil-immersed power transformers in transformer tanks lead to increased temperature levels. This influences the life expectancy of high-voltage electrical installations, for example through the aging of the insulating material. The temperature level at any given time depends on many variable parameters, including applied loads, ambient temperature and recent loading history. Aging is exponential with temperature levels, so it is preferable to avoid high temperatures even for short periods of time. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02H01F27/08
CPCF28D20/02H01F27/08Y02E60/14H01F27/10H01F27/402H01F30/16
Inventor T·兰里德G·卡里米-莫加达姆
Owner HITACHI ENERGY SWITZERLAND AG
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