Mechanical Condition Detection of Vacuum On-load Tap-changer for Converter Transformer Based on Time-frequency Domain Characteristics of Vibration Signal

PAN Zhicheng; ZHANG Jinyin; ZHOU Haibin; DENG Jun; LIANG Chen

doi:10.13296/j.1001-1609.hva.2020.06.033

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Mechanical Condition Detection of Vacuum On-load Tap-changer for Converter Transformer Based on Time-frequency Domain Characteristics of Vibration Signal

更新时间：2025-04-26

- Mechanical Condition Detection of Vacuum On-load Tap-changer for Converter Transformer Based on Time-frequency Domain Characteristics of Vibration Signal
- High VoltageApparatus Vol. 56, Issue 6, Pages: 232-237(2020)
- 作者机构：
  
  中国南方电网有限责任公司超高压输电公司检修试验中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.06.033
  CLC： TM403.4
- Published：2020
- 稿件说明：
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[1]潘志城,张晋寅,周海滨,邓军,梁晨.基于振动信号时频域特征的换流变真空有载分接开关机械状态检测[J].高压电器,2020,56(06):232-237.

PAN Zhicheng, ZHANG Jinyin, ZHOU Haibin, et al. Mechanical Condition Detection of Vacuum On-load Tap-changer for Converter Transformer Based on Time-frequency Domain Characteristics of Vibration Signal[J]. High voltageapparatus, 2020, 56(6): 232-237.
[1]潘志城,张晋寅,周海滨,邓军,梁晨.基于振动信号时频域特征的换流变真空有载分接开关机械状态检测[J].高压电器,2020,56(06):232-237. DOI： 10.13296/j.1001-1609.hva.2020.06.033.

PAN Zhicheng, ZHANG Jinyin, ZHOU Haibin, et al. Mechanical Condition Detection of Vacuum On-load Tap-changer for Converter Transformer Based on Time-frequency Domain Characteristics of Vibration Signal[J]. High voltageapparatus, 2020, 56(6): 232-237. DOI： 10.13296/j.1001-1609.hva.2020.06.033.

摘要

文中针对换流变用真空有载分接开关的结构特点

开展分接开关切换过程的振动测试

分析振动信号的时频域特征

提出基于振动信号时频域特征的换流变真空有载分接开关状态检测的方法

并验证其工程可行性

实践结果证明该方法可有效检测分接开关驱动机构异常、支撑板断裂和减振器支座开裂等机械缺陷。

Abstract

In this paper

according to the structural characteristics of vacuum on-load tap-changer for converter trans-former

vibration test is carried out during switching process in the field. Vibration characteristics in the time domainand frequency domain are studied. Based on the time-frequency domain characteristics of the vibration signal

amethod to detect the condition of vacuum on-load tap-changer（OLTC）for converter transformer is proposed

and itsengineering validity is verified. This method is proved to be effectively detect mechanical defects of vacuum on-loadtap-changer

such as abnormal motor-drive mechanism

broken support plate and cracked absorber support.

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Related Institution

State Grid Zhejiang Electric Power Research Institute

Department of Electrical Engineering, Shanghai Jiao Tong University

College of Electrical Engineering,Shanghai University of Electric Power

Key Laboratory of Control of Power Transmission and Conversion, Shanghai Jiao Tong University, Ministry of Education

Electric Power Research Institute, Guangxi Power Grid Corporation

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