Study on Ultrasonic Method for Partial Discharge Detection Based on Conformal Sparse Array Sensor

MA Junpeng; QI Yanxun; WU Han; WANG Chengliang; ZHANG Jiantao; XIE Qing

doi:10.13296/j.1001-1609.hva.2021.07.009

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Study on Ultrasonic Method for Partial Discharge Detection Based on Conformal Sparse Array Sensor

更新时间：2025-04-26

- Study on Ultrasonic Method for Partial Discharge Detection Based on Conformal Sparse Array Sensor
- High VoltageApparatus Vol. 57, Issue 7, Pages: 60-67(2021)
- 作者机构：
  
  1. 江苏方天电力技术有限公司
  2. 华北电力大学河北省输变电设备安全防御重点实验室
  3. 国网河北省电力有限公司邢台供电分公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.07.009
  CLC： TM855;TP212
- Published：2021
- 稿件说明：
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MA Junpeng, QI Yanxun, WU Han, et al. Study on Ultrasonic Method for Partial Discharge Detection Based on Conformal Sparse Array Sensor[J]. High voltageapparatus, 2021, 57(7): 60-67.
DOI：

MA Junpeng, QI Yanxun, WU Han, et al. Study on Ultrasonic Method for Partial Discharge Detection Based on Conformal Sparse Array Sensor[J]. High voltageapparatus, 2021, 57(7): 60-67. DOI： 10.13296/j.1001-1609.hva.2021.07.009.

摘要

超声阵列检测由于其高检测灵敏度和强抗干扰能力

广泛应用于电气设备的局放检测。目前常用的平面型阵列传感器遇到不规则的电气设备外表面时不能完全与之契合而出现检测死区

因此有必要研究共形阵列传感器。同时

在实际检测当中

由于阵元失效会显著降低检测成功率。据此

文中提出了一种基于共形稀疏阵列传感器的局部放电超声检测方法

首先研制了一种共形阵列传感器

并模拟了几种稀疏结构;其次运用稀疏测向算法对几种稀疏结构下的共形阵列传感器进行测向仿真研究;最后

以稀疏率2/9的共形阵列传感器为例

进行了局部放电超声阵列检测的实验研究。结果表明:共形稀疏阵列传感器适用于电气设备的局放检测。

Abstract

Ultrasonic array detection is widely used in partial discharge detection of electrical equipment thanks to its high detection sensitivity and strong anti-interference ability.The planar array sensor currently in common use

in case of encountering irregular external surface of electrical equipment

has idle detection area due to its incomplete fitness.Therefore

it is necessary to study the conformal array sensor.At the same time

in the actual detection the detection success rate is reduced remarkably due to failure of the array element.In this paper

a kind of PD ultrasonic detection method based on conformal sparse array sensor is proposed.Firstly

a kind of conformal array sensor is developed and several sparse structures are simulated.Secondly

the direction finding simulation of conformal array sensors with several sparse structures is studied by using the sparse direction finding algorithm.Finally

the conformal array sensor with sparse ratio of 2/9 is taken as an example to perform the experimental study of partial discharge ultrasonic array detection.It is shown by the result that the conformal sparse array sensor is suitable for partial discharge detection of electrical equipment.

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