Real-time observation device for electrical tree initiation experiment

A technology of real-time observation and electric tree branches, applied in the direction of measuring devices, testing dielectric strength, and material analysis through optical means, can solve problems such as low efficiency, long experiment period, inability to cause electric tree branches and real-time observation of growth conditions, etc. To achieve the effect of improving efficiency

Inactive Publication Date: 2017-01-04
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above research methods are simple and easy to implement, they cannot conduct real-time observation of the initiation and growth of electrical dendrites of multiple samples, which is inefficient and the experime

Method used

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  • Real-time observation device for electrical tree initiation experiment
  • Real-time observation device for electrical tree initiation experiment
  • Real-time observation device for electrical tree initiation experiment

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Embodiment Construction

[0019] 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.

[0020] 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 relates to a real-time observation device for an electrical tree initiation experiment, belongs to the technical field of electrical tree resistance researches of cable insulation materials, and aims to solve the problems that the electrical tree initiation and growth conditions of multiple samples cannot be observed in real time, efficiency is low and experiment cycle is long in the prior art. The real-time observation device is characterized in that a ground electrode is flatly arranged at the bottom of a transparent oil tank, the pin electrode of each high-voltage electrode is pre-buried in a sample, and the bottom of the sample is coated with conductive paint and arranged on the ground electrode; the plurality of the high-voltage electrodes are arranged on the same transverse straight line in an equal-distance manner and fixed on an experiment support through an electrode support; the copper pillars of the high-voltage electrodes are serially connected through wires and connected with a high-voltage power supply; the transparent oil tank is fixed on the experiment support through an oil tank support, a condenser and a light source are arranged on the right side of the transparent oil tank from left to right, a camera and a microscope are arranged on the left side of the transparent oil tank from left to right, the microscope, the light source and the condenser are coaxially mounted on an adjustable support, and the camera is connected with a computer through a wire. The real-time observation device is used for the electrical tree initiation experiment.

Description

technical field [0001] The invention relates to a real-time observation device for an electric tree branch aging experiment of a cable insulating material, and belongs to the technical field of research on the electric tree resistance performance of a cable insulating material. Background technique [0002] Cross-linked polyethylene (XLPE) is widely used in modern extruded power cable insulation due to its superior electrical, mechanical and thermal stability properties. In recent years, with the rapid development of cities and modern industries, high-voltage and ultra-high-voltage XLPE insulated cables have been more and more widely used in urban power grids in my country. However, in the actual operation of the power cable, due to the presence of impurities or defects in the cable, the local electric field in the insulating layer will be concentrated and gradually cause electric trees. Electric tree branches appear, which is an important factor for cable insulation failur...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01R31/12
Inventor 张城城王传博李春阳韩宝忠景子昂
Owner HARBIN UNIV OF SCI & TECH
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