Oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient

A space charge and measuring device technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve problems such as no consideration

Inactive Publication Date: 2016-07-13
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the existing space charge temperature gradient measurement device does not consider the low temperature

Method used

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  • Oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient
  • Oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient
  • Oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient

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Embodiment Construction

[0028] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Furthermore, it should be understood that development work, while potentially complex and time-consuming, would be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0029] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution ac...

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Abstract

The invention discloses an oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient and relates to a charge measuring device. The oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient solves a technical problem that a conventional space charge measuring system under temperature gradient is incapable of measuring space charges under low temperature gradient, and comprises a top electrode, a top electrode shielding case, an electrode fixing slot, a bottom electrode, a piezoelectric sensor, a signal amplifier, and a temperature gradient heating device. A sample is located at the center of the upper surface of the bottom electrode. The top electrode is fixed by the top electrode fixing slot and is connected with a high-voltage pulse and a high-voltage DC source. The piezoelectric sensor is fixed to the lower surface of the bottom electrode. The oil-paper double-layer medium space charge measuring apparatus under wide temperature gradient is used for measuring the space charge distribution of the oil-paper under the temperature gradient by using a pulsed electroacoustic method and is used in the field of high voltage and insulation.

Description

technical field [0001] The invention relates to a charge measuring device, in particular to a space charge measuring device of an oil-paper double-layer medium under a wide temperature gradient, and belongs to the technical field of high voltage and insulation. Background technique [0002] The problem of space charge generally exists in insulating structures such as solid dielectric and oil-paper insulation, and it is a difficult problem that restricts the development of dielectric insulation performance. Transformers, cables, bushings and other electrical equipment should consider space charge issues during design and operation. [0003] The pulse electroacoustic method (Pulsed electroacoustic method referred to as PEA) is generally used in the test of space charge at home and abroad. This method was proposed by Professor Tatsuo Takada of Musashi Institute of Technology in Japan in the 1990s. After more than 30 years of continuous improvement, this method has been widely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 陈庆国张金烽池明赫殷丕盛王新宇王永红聂洪岩魏新劳
Owner HARBIN UNIV OF SCI & TECH
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