Experimental system and method for simulating internal electrothermal stress of converter transformer

A technology of converter transformers and experimental systems, which is applied in the direction of instruments, measuring electronics, scientific instruments, etc., to achieve the effect of reasonable structure design and simple operation

Inactive Publication Date: 2019-06-21
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the prior art, there is no device capable of performing simulation experiments related to insulation faults of converter transformers in a laboratory environment.

Method used

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  • Experimental system and method for simulating internal electrothermal stress of converter transformer
  • Experimental system and method for simulating internal electrothermal stress of converter transformer
  • Experimental system and method for simulating internal electrothermal stress of converter transformer

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of the present invention are intended to cover a non-exclusive inclusion, for example, a process or method comprising a series of steps or units The systems, products or devices are not necessarily limited to ...

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Abstract

The invention discloses an experimental system and method for simulating the internal electrothermal stress of a converter transformer, and belongs to the technical field of design of the internal main insulation system of the converter transformer. The experimental system comprises a vacuum impregnation unit and an electrothermal aging unit. The vacuum impregnation unit is a vacuum impregnation tank containing the transformer oil subjected to dehydration and degassing treatment and used for oil impregnation treatment of the insulating paperboard. The electrothermal aging unit comprises a power supply control cabinet, a power supply cabinet and an electrothermal aging tank. A plate-plate electrode mechanism is arranged in the electrothermal aging tank. An automatic temperature controller is also arranged on the electrothermal aging tank. The power supply cabinet is used for providing voltage for the power supply control cabinet and the plate-plate electrode mechanism in the electrothermal aging tank. The power supply control cabinet is connected with the power supply cabinet and used for adjusting the voltage frequency on the plate-plate electrode mechanism. The failure of the internal insulation of the converter transformer under the compound stress can be simulated, the electrical performance of the oil-paper insulation under the compound electrothermal stress can be accurately studied and the maneuverability and the reliability are high.

Description

technical field [0001] The invention belongs to the technical field of designing a main insulation system inside a converter transformer, and in particular relates to an experimental system and method for simulating the electrothermal stress inside a converter transformer. Background technique [0002] With the rapid development of UHV DC transmission projects in my country, construction of UHV DC transmission projects with a voltage level of ±1100kV has also started. However, the rapid development of power transmission projects has not rapidly promoted the development of corresponding converter transformer manufacturing technology. Therefore, converter transformers still face many challenges as UHV equipment in DC transmission projects. [0003] At present, the design of the main insulation system inside the converter transformer is still consistent with that of the traditional AC transformer, which is composed of an oil-paper insulation system. Only the performance parame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01N17/00
Inventor 李盛涛崔惠泽杨柳青李世军闫威葛昭朱远惟
Owner XI AN JIAOTONG UNIV
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