Switch cabinet partial discharge itinerant detector

Abstract

The invention discloses a switch cabinet partial discharge itinerant detector which comprises an ultrahigh frequency sensor, a cable and a detecting terminal, wherein the ultrahigh frequency sensor is connected with the detecting terminal through the cable. The detecting terminal comprises a signal conditioning unit, a data acquisition card and a touch screen. The signal conditioning unit comprises a band-pass filter, a signal amplifier and a pulse broadening device, wherein the band-pass filter, the signal amplifier, the pulse broadening device, the data acquisition card and the touch screen are connected in sequence. The switch cabinet partial discharge itinerant detector is compact in structure, convenient to carry and detect due to the fact that the detecting terminal is a handheld type, high in working efficiency and capable of effectively detecting the switch cabinet partial discharge by utilizing of an ultrahigh frequency detecting method.

Description

technical field [0001] The invention relates to a detection device for partial discharge detection of switch cabinets, in particular to a partial discharge inspection instrument for switch cabinets. Background technique [0002] With the rapid development of my country's power industry construction, the modern power system is developing in the direction of large power grids, large units, ultra-high voltage, and large capacity. In order to ensure the stability and reliability of the power system, more safety requirements for power equipment are also proposed high demands. The switchgear is an important equipment commonly used in the power system. The internal faults of the switchgear are mainly insulation faults. When there is an insulation defect inside the switchgear, partial discharge will occur. Partial discharge discharge is one of the important parameters reflecting the insulation performance of the switchgear. It It is the symptom and manifestation of the insulation de...

AI Technical Summary

Problems solved by technology

[0004] Analyzing the current UHF partial discharge detection equipment, from the perspective of the domestic market, most partial discharge detectors can only extract a small amount of effective signals from the rich partial discharge signals, and most of the products are fixed and large in size. The structure is more complicated and the portability is poor

In the current market, high-end portable partial discharge detectors are monopolized by some foreign manufacturers of traditional partial discharge detectors. The function of the detector is not perfect, so it is necessary to develop a hand-held detector with relatively low cost, which can eliminate various interferences in the detection process, and judge the strength of partial discharge signals, and has good portability. of

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