Portable partial discharge detector for insulating switch

Abstract

The invention provides a portable partial discharge detector for an insulating switch. The detector comprises an insulating switch body, an external ultrahigh frequency (UHF) sensor, an external probe, a communication interface, a noise identification unit, a signal processing unit and a setting unit, and application units such as a data display unit, a storage unit, a search unit and the like, can display measured data in real time, and facilitates data storage and retrieval. The detector has safe and reliable performance and high applicability, and also has the characteristics that: the detector can be moved on site, has light weight, and is more convenient to use.

Description

technical field [0001] The invention is a portable insulating switch partial discharge detector, which belongs to the detection instrument in the electric power industry. Background technique [0002] At present, gas partial discharge is often evaluated by detecting ultra-high frequency electromagnetic waves with an external antenna. This method has low sensitivity and is easily affected by external interference, so it is only used for qualitative detection of partial discharge. The other type is the internal sensor, but it has not been optimized for structural characteristics, so it has certain limitations. At the same time, because the insulating switch has the advantages of small footprint and high operating reliability, but the result of being fully enclosed makes it difficult to grasp the partial discharge that occurs inside, so the on-line monitoring of partial discharge is particularly important. [0003] At the same time, because many partial discharge detectors for...

AI Technical Summary

Problems solved by technology

[0002] At present, gas partial discharge is often evaluated by detecting ultra-high frequency electromagnetic waves with an external antenna. This method has low sensitivity and is easily affected by external interference. It is only used for qualitative detection of partial discharge.

The other type is the internal sensor, but it has not been optimized for structural characteristics, so it has certain limitations

At the same time, because the insulating switch has the advantages of small footprint and high operating reliability, but the result of being fully enclosed makes it difficult to grasp the partial discharge that occurs inside, so the on-line monitoring of partial discharge is particularly important

[0003] At the same time, because many partial discharge detectors for online detection can only be fixed in a certain position, or they are large in size and heavy in weight, which is not conducive to on-site mobile use, and there are many inconveniences in actual operation.

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