Field Application of Acoustic-electrical Combination Method in the PD Defect Location of Main Transformer

LIU Yanqin; LIU Jun; ZHOU Bo; SONG Ying; GUO Chao; CHENG Peng; GAO Jun; HU Lin

doi:10.13296/j.1001-1609.hva.2018.11.035

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Field Application of Acoustic-electrical Combination Method in the PD Defect Location of Main Transformer

更新时间：2025-04-26

- Field Application of Acoustic-electrical Combination Method in the PD Defect Location of Main Transformer
- High VoltageApparatus Vol. 54, Issue 11, Pages: 239-244(2018)
- 作者机构：
  
  国网四川电力成都供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.11.035
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]刘彦琴,刘君,周波,宋颖,郭超,程鹏,高竣,胡琳.声电联合法在主变局放缺陷定位中的现场应用[J].高压电器,2018,54(11):239-244.

LIU Yanqin, LIU Jun, ZHOU Bo, et al. Field Application of Acoustic-electrical Combination Method in the PD Defect Location of Main Transformer[J]. High voltageapparatus, 2018, 54(11): 239-244.
[1]刘彦琴,刘君,周波,宋颖,郭超,程鹏,高竣,胡琳.声电联合法在主变局放缺陷定位中的现场应用[J].高压电器,2018,54(11):239-244. DOI： 10.13296/j.1001-1609.hva.2018.11.035.

LIU Yanqin, LIU Jun, ZHOU Bo, et al. Field Application of Acoustic-electrical Combination Method in the PD Defect Location of Main Transformer[J]. High voltageapparatus, 2018, 54(11): 239-244. DOI： 10.13296/j.1001-1609.hva.2018.11.035.

摘要

文中介绍了声电联合法在成都某110 kV变电站1号主变局放检测及定位中的现场应用案例。针对验收试验中发现的异常放电信号

首先利用检测阻抗法进行一次定位分析

确定放电源所处的大致范围。其次

基于局部放电的声电信号不同的传播特性

结合超声波测试技术

采用声电联合法对放电源进行二次精确定位。最后

通过对缺陷处理后的局放信号进行复测以及有限元仿真

验证了声电联合法在现场主变局放定位中的准确性和有效性。

Abstract

In this paper

a field application case of the acoustic-electrical combination method in partial discharge（PD）detection and localization of No.1 transformer in a 110 kV substation in Chengdu is introduced. For the abnor-mal discharge signal found in the acceptance test

a rough location is first performed using the detection impedancemethod to determine the approximate range of the discharge source. Secondly

based on the different propagationcharacteristics of acoustic-electrical signals of PD

and combined with ultrasonic testing technology

an acoustic-electric combination method is used to perform secondary accurate localization of the discharge source. Finally

therepetitive measurement of the PD signal after the defect processing and finite element method are performed to verify the accuracy and effectiveness of the acoustic-electrical combination method in the PD location of the transformer.

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Related Institution

State Grid Shanxi Electric Power Company Electric Power Research Institute

School of Electronic, Electrical and Communication Engineering University of Chinese Academy of Sciences

Institute of Electrical Engineering Chinese Academy of Sciences

Xi'an High Voltage Apparatus Research Institute Co., Ltd.

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