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Porcelain supporting post insulator electrified detection device based on resonance acoustics

A technology for live detection and insulators, which is used in the analysis of solids using sonic/ultrasonic/infrasonic waves, which can solve problems such as poor anti-interference ability, inaccurate measurement, and complicated measurement work.

Inactive Publication Date: 2015-10-28
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The first three methods generally have disadvantages such as low safety performance, complicated measurement work, high measurement cost, imprecise measurement and poor anti-interference ability.

Method used

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  • Porcelain supporting post insulator electrified detection device based on resonance acoustics
  • Porcelain supporting post insulator electrified detection device based on resonance acoustics

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Embodiment Construction

[0021] The porcelain post insulator live detection device of the present invention is used in the following steps: applying an excitation signal to the lower flange of the porcelain post insulator to be tested, a spectrum analysis system performs modal analysis on the porcelain post insulator, power spectrum analysis on the porcelain post insulator, and The crack of the porcelain post insulator is judged. The device has the advantages of live detection, high detection efficiency, and simple operation.

[0022] During the live detection process, the operator applies an excitation signal in the frequency range of 1~10000Hz to the lower flange of the porcelain post insulator to be tested to force the porcelain post insulator to vibrate and test the probe Such as figure 1 . Then, perform the modal analysis of the porcelain post insulator under the above excitation signal, compare the natural frequency distribution of each porcelain post insulator with the intact insulator obtained ...

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Abstract

The invention aims at providing a porcelain supporting post insulator electrified detection device. The device exerts an excitation signal on a lower flange of a to-be-detected porcelain supporting post insulator through a probe to conduct modal analysis on the porcelain supporting post insulator, conducts power spectrum analysis on the porcelain supporting post insulator with MATLAB as a development tool, and judges the crack situation of the porcelain supporting post insulator through a control system. The method has the advantages of being capable of conducting electrified detection, high in detection efficiency, easy and convenient to operate, and the like. Accuracy, safety and operability of the electrified insulator detection can be ensured. The detection capacity and efficiency are improved.

Description

technical field [0001] The invention relates to the electrical field, in particular to a resonant acoustic-based live detection device for porcelain post insulators. Background technique [0002] Porcelain post insulators are the main type of substation insulators, which mainly insulate and support lines and other equipment. Due to the extremely low toughness of porcelain insulators, most porcelain insulators bear the mechanical load during power grid operation for a long time, as well as the influence of severe weather such as strong wind, rain, snow, and sunshine. In addition, there are reasons such as unreasonable design, inadequate installation, and maintenance. It is very easy to cause brittle fracture accidents of porcelain post insulators in operation, resulting in partial or complete power outages in substations and power supply lines, equipment damage, casualties, and serious consequences. Therefore, maintenance personnel must check whether the insulator strength m...

Claims

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Application Information

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IPC IPC(8): G01N29/12
Inventor 许涛王军华
Owner WUHAN UNIV
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