Research on Vibration Signal Detection Technology of Converter Transformer’s On-load Tap-changer

LU Yuncai; WANG Tonglei; WEI Chao; ZHANG Zhixian; WU Peng

doi:10.13296/j.1001-1609.hva.2020.12.025

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Research on Vibration Signal Detection Technology of Converter Transformer’s On-load Tap-changer

更新时间：2025-04-26

- Research on Vibration Signal Detection Technology of Converter Transformer’s On-load Tap-changer
- High VoltageApparatus Vol. 56, Issue 12, Pages: 184-190(2020)
- 作者机构：
  
  1. 国网江苏省电力有限公司电力科学研究院
  2. 重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.12.025
  CLC： TM403.4;TM721.1
- Published：2020
- 稿件说明：
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[1]陆云才,王同磊,蔚超,张知先,吴鹏.换流变有载分接开关振动信号检测技术研究[J].高压电器,2020,56(12):184-190.

LU Yuncai, WANG Tonglei, WEI Chao, et al. Research on Vibration Signal Detection Technology of Converter Transformer’s On-load Tap-changer[J]. High voltageapparatus, 2020, 56(12): 184-190.
[1]陆云才,王同磊,蔚超,张知先,吴鹏.换流变有载分接开关振动信号检测技术研究[J].高压电器,2020,56(12):184-190. DOI： 10.13296/j.1001-1609.hva.2020.12.025.

LU Yuncai, WANG Tonglei, WEI Chao, et al. Research on Vibration Signal Detection Technology of Converter Transformer’s On-load Tap-changer[J]. High voltageapparatus, 2020, 56(12): 184-190. DOI： 10.13296/j.1001-1609.hva.2020.12.025.

摘要

换流变有载分接开关（on-load tap-changer

OLTC）是调整换流变工作电压的核心设备

其安全稳定运行对于保障换流变的安全具有重要意义。振动信号检测技术是分析换流变OLTC内部零部件故障的主要手段。为了实现换流变OLTC振动信号检测技术的工程应用

在江苏省某换流站开展了该技术的应用研究。分析了换流变OLTC典型振动信号的时域和频域特征

基于S变换研究了振动信号的时频域联合分布。提取了时域有效值、时域峭度、传动轴动作时间;频率重心;S变换能量熵等特征参量。基于所提出的特征参量

研究了同一OLTC切换触头不同档位振动信号差异

不同OLTC切换触头同一档位振动信号差异。分析了OLTC传动轴松动故障的常见特征。研究成果为换流变OLTC振动信号检测技术的工程化应用提供了理论支撑。

Abstract

The on-load tap-changer（OLTC） is the core equipment for adjusting the working voltage of converter transformer.Its safe and stable operation is of great significance to ensure the safety of converter transformer.The vibration signal detection technology is the main technique to analyze the internal components’ faults of the OLTC.In order to realize the engineering application of the OLTC vibration signal detection technology

the application research of this technology in a converter station in Jiangsu Province is carried out.The time-domain and frequency-domain characteristics of the typical vibration signal of the converter transformer’s OLTC are analyzed.The time-frequency domain joint distribution of the vibration signal is studied based on the S-transformation.The time domain’s RMS

the time domain’s kurtosis the drive shaft action time

the frequency center of gravity

and the S transform energy entropy are extracted.Based on the proposed characteristic parameters

the difference of vibration signals of different contact positions of the same OLTC and the difference of vibration signals of the same contact position of different OLTCs are studied.The characteristics of the OLTC drive shaft loosening fault are analyzed.The research results provide theoretical support for the engineering application of converter transformer’s OLTC vibration signal detection technology.

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