Influence of Load Conditions on the Noise Characteristics of an Oil-immersed Distribution Transformer

WU Xiaowen; LI Ling; CAO Hao; LU Ling; HU Sheng; LYU Jianhong; CHEN Wei

doi:10.13296/j.1001-1609.hva.2019.11.008

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Influence of Load Conditions on the Noise Characteristics of an Oil-immersed Distribution Transformer

更新时间：2025-04-26

- Influence of Load Conditions on the Noise Characteristics of an Oil-immersed Distribution Transformer
- High VoltageApparatus Vol. 55, Issue 11, Pages: 60-65(2019)
- 作者机构：
  
  1. 国网湖南省电力有限公司电力科学研究院
  2. 武汉大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.11.008
  CLC： TM421
- Published：2019
- 稿件说明：
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[1]吴晓文,李玲,曹浩,卢铃,胡胜,吕建红,陈炜.负载因素对油浸式配电变压器噪声特性的影响[J].高压电器,2019,55(11):60-65.

WU Xiaowen, LI Ling, CAO Hao, et al. Influence of Load Conditions on the Noise Characteristics of an Oil-immersed Distribution Transformer[J]. High voltageapparatus, 2019, 55(11): 60-65.
[1]吴晓文,李玲,曹浩,卢铃,胡胜,吕建红,陈炜.负载因素对油浸式配电变压器噪声特性的影响[J].高压电器,2019,55(11):60-65. DOI： 10.13296/j.1001-1609.hva.2019.11.008.

WU Xiaowen, LI Ling, CAO Hao, et al. Influence of Load Conditions on the Noise Characteristics of an Oil-immersed Distribution Transformer[J]. High voltageapparatus, 2019, 55(11): 60-65. DOI： 10.13296/j.1001-1609.hva.2019.11.008.

摘要

为了研究负载因素对变压器噪声特性的影响

在半消声室环境中开展了额定负载、过电压、三相不平衡、谐波负载等条件下的油浸式配电变压器的噪声检测

对比研究了不同负载条件下配电变压器的噪声特性。结果表明

变压器噪声水平与过电压、三相不平衡、谐波负载等运行条件密切相关。随着过电压水平、不平衡程度、谐波负载容量的增加

变压器噪声水平明显增大

其中

不平衡谐波负载对变压器噪声水平的影响最为显著

可导致变压器运行噪声增加40 dB（A）以上。由于配电变压器运行条件普遍较为恶劣

在配电变压器噪声控制过程中

应充分考虑负载因素的影响

制定合理的噪声控制措施。研究结果对于配电变压器噪声与振动控制具有参考意义。

Abstract

In order to investigate the influence of load conditions on the noise characteristics of power transformers

noise tests of an oil-immersed distribution transformer in overvoltage

unbalanced load and harmonic load conditions are tested in a semi-anechoic room

respectively.The noise characteristics of the transformer noises in these conditions are compared and analyzed.The result shows that the transformer noise is closely relevant with the mentioned load conditions. The sound pressure level of the transformer increases with the increasing overvoltage level

unbalanced-load degree and harmonic content. In these operation conditions

unbalanced harmonic load has the most influential effect

which may cause a sharp increase of 40 dB（A） to the transformer noise level.As the distribution transformer is commonly operated in poor load conditions

the effects of load conditions should be considered in order to choose a reasonable measure in the noise control process.The analysis results can be referenced in the noise and vibration control process of distribution transformers.

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