Statistics and Analysis of Audible Noise Features of 110 kV Transformers

WU Xiaowen; LU Ling; HU Sheng; CAO Hao; ZENG Huifang; OUYANG Ling

doi:10.13296/j.1001-1609.hva.2019.11.016

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Statistics and Analysis of Audible Noise Features of 110 kV Transformers

更新时间：2025-04-26

- Statistics and Analysis of Audible Noise Features of 110 kV Transformers
- High VoltageApparatus Vol. 55, Issue 11, Pages: 113-117+125(2019)
- 作者机构：
  
  国网湖南省电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.11.016
  CLC： TM41
- Published：2019
- 稿件说明：
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[1]吴晓文,卢铃,胡胜,曹浩,曾惠芳,欧阳玲.110 kV变压器噪声特征量统计与分析[J].高压电器,2019,55(11):113-117+125.

WU Xiaowen, LU Ling, HU Sheng, et al. Statistics and Analysis of Audible Noise Features of 110 kV Transformers[J]. High voltageapparatus, 2019, 55(11): 113-117+125.
[1]吴晓文,卢铃,胡胜,曹浩,曾惠芳,欧阳玲.110 kV变压器噪声特征量统计与分析[J].高压电器,2019,55(11):113-117+125. DOI： 10.13296/j.1001-1609.hva.2019.11.016.

WU Xiaowen, LU Ling, HU Sheng, et al. Statistics and Analysis of Audible Noise Features of 110 kV Transformers[J]. High voltageapparatus, 2019, 55(11): 113-117+125. DOI： 10.13296/j.1001-1609.hva.2019.11.016.

摘要

变压器噪声是评价其运行状态的关键参数之一

为了实现基于噪声的变压器运行状态评价

对现场运行的72台110 kV主变进行了噪声检测

提出了奇偶次谐波比、高频比重以及频谱复杂度等3个特征量

并且按照冷却方式差异对上述特征量的数值分布进行了统计分析

确定了现场正常运行变压器噪声特征量的分布范围

分析了变压器运行年限对其噪声特征的影响。结果表明

冷却方式对于变压器平均声压级、奇偶次谐波比、高频比重以及频谱复杂度特征的分布具有较大影响

强迫风冷变压器特征参数普遍偏高

而变压器运行年限对上述特征并无明显影响。分析结论为变压器运行状态评价提供了数据支持与参考依据。

Abstract

Transformer noise is one of the critical parameter to diagnose its operation. In order to realize transformer operation condition evaluation based on noise test

field noise test is carried out on 72 110 kV transformers.Three features including the odd-even harmonic ratio

high-frequency energy ratio and spectral complexity are proposed. Statistical analysis is made to determine the data range in which these features are distributed in normal operation condition of the transformer with different cooling methods. In addition

the influence of operation time on the distribution of transformer noise features is analyzed. The result shows that cooling method has large influence on the average sound pressure level

odd-even harmonic ratio

high-frequency energy ratio and spectral complexity of transformer noise. These features of transformer with cooling fans are much higher than that of the transformer cooled with nature convection. Little influence is observed by the transformer operation time on these features. The results will be used as basic data and reference for the condition evaluation of transformers.

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Related Author

WU Xiaowen

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HU Sheng

LYU Jianhong

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WU Xiaowen

Related Institution

School of Electrical Engineering, Wuhan University

State Grid Hunan Electric Power Corporation Research Institute

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