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Capacitive bushing high-frequency partial discharge signal detection device

A technology of partial discharge signal and detection device, which is applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of potential safety hazards, low detection efficiency, large signal attenuation, etc., and achieves good applicability, high detection efficiency, The effect of low signal attenuation

Active Publication Date: 2018-03-16
HANGZHOU XIHU ELECTRONICS INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing devices have defects such as inconvenient installation, large signal attenuation, low detection efficiency, and potential safety hazards

Method used

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  • Capacitive bushing high-frequency partial discharge signal detection device
  • Capacitive bushing high-frequency partial discharge signal detection device

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Embodiment Construction

[0017] Such as figure 1 As shown, a capacitive bushing high-frequency partial discharge signal detection device includes a signal acquisition device 1 and a signal processing device 2 that are threaded.

[0018] Such as figure 2 As shown, the signal acquisition device 1 includes a first metal shell 1-1, an end screen terminal 1-2, a high frequency partial discharge sensor 1-3 and a high frequency coaxial cable 1-4.

[0019] The first metal shell 1-1 and the last screen terminal 1-2 are cylindrical, and the last screen terminal 1-2 is located in the first metal shell 1-1, and is integrally washed with the first metal shell 1-1. system; the last screen terminal 1-2 is connected to the first metal shell 1-1 through the connection platform 1-5, and an annular cavity is formed between the last screen terminal 1-2 and the first metal shell 1-1; There is a cable through hole on the connection platform 1-5, and the connection platform 1-5 closes one end of the terminal 1-2 of the l...

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Abstract

The invention relates to a capacitive bushing high-frequency partial discharge signal detection device. Existing devices have the disadvantages of inconvenient installation, large signal attenuation,low detection efficiency, and hidden safety problems. The capacitive bushing high-frequency partial discharge signal detection device of the invention includes a signal acquisition device and a signalprocessing device which are in threaded connection with each other; the signal acquisition device includes a first metal shell, a terminal screen wiring end, and a high-frequency partial discharge sensor, wherein the terminal screen wiring end is located in the first metal shell, and the high-frequency partial discharge sensor is arranged on the terminal screen wiring end and is fixed through a horizontal ring-shaped baffle; and the signal processing device includes a second metal shell, a signal processing circuit board, and a BNC connector, wherein the signal processing circuit board is disposed in the second metal shell, and the BNC connector is disposed on the second metal shell. The capacitive bushing high-frequency partial discharge signal detection device of the invention has the advantages of excellent shielding performance, good anti-interference performance, safe and reliable use and high durability, and can effectively adapt to on-site environments.

Description

technical field [0001] The invention belongs to the technical field of high-voltage detection, and in particular relates to a high-frequency partial discharge signal detection device of a capacitive bushing. Background technique [0002] Bushing failure is one of the important reasons for power equipment failure and power outage. At present, the insulation state of the bushing is mainly detected by traditional preventive tests, but the pre-test period is long, and it is difficult to detect potential faults in the bushing in time. Generally speaking, there are two main structures of the casing end screen, one is the external thread structure, and the other is the internal thread structure, both of which are reliably grounded through the casing end screen grounding cover. [0003] Bushing partial discharge detection mainly collects high-frequency partial discharge signals through the bushing end screen. At present, relevant personnel have developed a device for collecting sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1263Y04S10/52
Inventor 刘凤琳张武波叶新林厉洋王光祥
Owner HANGZHOU XIHU ELECTRONICS INST
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