Wedge-shaped ultrahigh frequency partial discharge sensor

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...

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.

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