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Wedge-shaped ultrahigh frequency partial discharge sensor

A sensor and high-frequency station technology, applied in the field of GIS partial discharge electrification detection, can solve the problems of gate occlusion, single radian, easy entry of interference signals into the sensor, etc., to ensure reliability and accuracy, improve the accuracy of judgment, The effect of isolating external interference signals

Pending Publication Date: 2019-01-22
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] During the on-site UHF partial discharge detection process, it is necessary to place the UHF sensor at the UHF gate for detection. However, during the installation of the GIS equipment, due to the installation personnel's unreasonable installation position of the UHF test gate or It is due to the unreasonable design of the equipment structure, resulting in the gate being blocked by the equipotential connection row, making it impossible to perform UHF partial discharge tests
The traditional UHF sensor is approximately a rectangular parallelepiped. During the test, the sensor needs to be closely attached to the sprue. When it is placed, force can only be applied on the front of the sensor. The size is large and the arc is single, so it cannot meet the tank test with compact layout and small space. Requirements, external interference signals can easily enter the sensor and have a great impact on the test results
The method of fully wrapping the test points with metal aluminum foil ensures the accuracy of the signal, but it is not suitable for large-scale inspections and general inspections.

Method used

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  • Wedge-shaped ultrahigh frequency partial discharge sensor

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Embodiment Construction

[0023] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0024] A wedge-shaped UHF partial discharge sensor, characterized in that: the sensor includes a sensor body (1) and an isolation spring pad (3); the sensor body (1) is a wedge, and the first wedge of the sensor body (1) The side (1-1) is provided with an antenna compartment (4), and an isolation spring pad (3) is provided around the antenna compartment (4). The sensor body (1) is connected to the aviation interface (2). The first wedge-shaped side (1-1) and the second wedge-shaped side (1-2) of the sensor body (1) are both arc-shaped inclined surfaces concave inward (such as Figure 1-3 shown). It can better adapt to different places of use and environments.

[0025] The side of the antenna compartment (4) is provided with a pull-up device for lifting the isolation spring pad (3), and the inner side of the isolation spring pad (3) is provided ...

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Abstract

The invention provides a wedge-shaped ultrahigh frequency partial discharge sensor. The sensor is characterized by comprising a sensor body (1) and an isolation spring washer (3). Compared with the prior art, the wedge-shaped ultrahigh frequency partial discharge sensor has the following beneficial effects: the requirement for testing GIS equipment test windows of various voltage levels due to a compact structure and narrow space can be realized, and a test process is ensured not to be affected by an external interference source, thus the judgment of the partial discharge type and severity isfacilitated, the accuracy of positioning a partial discharge signal during the test process is improved, and accurate and reliable technical support is provided for the post processing.

Description

technical field [0001] The invention relates to the technical field of GIS partial discharge electrified detection, and is a sensor designed for GIS tanks with various voltage levels. Due to the compact structure and narrow space, personnel cannot find a suitable angle for UHF partial discharge detection. Background technique [0002] During the on-site UHF partial discharge detection process, it is necessary to place the UHF sensor at the UHF gate for detection. However, during the installation of the GIS equipment, due to the unreasonable installation position of the UHF test gate by the installer or It is due to the unreasonable design of the equipment structure that the gate is blocked by the equipotential connection row, making it impossible to perform UHF partial discharge tests. The traditional UHF sensor is approximately a rectangular parallelepiped. During the test, the sensor needs to be closely attached to the sprue. When it is placed, force can only be applied on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1227
Inventor 张洋徐和忠程时杨雪滨姜淮田青松衣显达张双岳蕾吴怀诚崔怡芳刘小倩
Owner STATE GRID CORP OF CHINA
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