Test and Analysis of Sound Insulation Performance of Sound Insulation Cover for UHV Shunt Reactor

NI Yuan; ZHANG Jiangong; ZHOU Bing; WANG Yanzhao; HU Jingzhu

doi:10.13296/j.1001-1609.hva.2021.02.012

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Test and Analysis of Sound Insulation Performance of Sound Insulation Cover for UHV Shunt Reactor

更新时间：2025-04-26

- Test and Analysis of Sound Insulation Performance of Sound Insulation Cover for UHV Shunt Reactor
- High VoltageApparatus Vol. 57, Issue 2, Pages: 77-83(2021)
- 作者机构：
  
  1. 中国电力科学研究院有限公司
  2. 电网环境保护国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.02.012
  CLC： TM472
- Published：2021
- 稿件说明：
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[1]倪园,张建功,周兵,王延召,胡静竹.并联电抗器隔声罩隔声性能测试及分析[J].高压电器,2021,57(02):77-83.

NI Yuan, ZHANG Jiangong, ZHOU Bing, et al. Test and Analysis of Sound Insulation Performance of Sound Insulation Cover for UHV Shunt Reactor[J]. High voltageapparatus, 2021, 57(2): 77-83.
[1]倪园,张建功,周兵,王延召,胡静竹.并联电抗器隔声罩隔声性能测试及分析[J].高压电器,2021,57(02):77-83. DOI： 10.13296/j.1001-1609.hva.2021.02.012.

NI Yuan, ZHANG Jiangong, ZHOU Bing, et al. Test and Analysis of Sound Insulation Performance of Sound Insulation Cover for UHV Shunt Reactor[J]. High voltageapparatus, 2021, 57(2): 77-83. DOI： 10.13296/j.1001-1609.hva.2021.02.012.

摘要

为评估和分析特高压并联电抗器隔声罩降噪效果

对特高压并联电抗器周围声场进行测试

明确100 Hz是电抗器噪声能量的主要成份

在比较分析隔声性能的3个指标后

依据相关标准

对并联电抗器隔声罩进行插入损失和噪声衰减测试。结果分析表明

随着距离的增加

200 Hz及以上频率的损失值明显大于100 Hz的损失值

同时加装隔声罩后的噪声源强衰减量在14～18 dB（A）之间

且隔声罩与电抗器本体的振动频率特性一致

这说明对并联电抗器加装隔声罩只是降低了周围声场的声压值

并没有消除隔声罩外因100 Hz噪声产生的干涉现象

建议在工程中采用针对100 Hz频率的吸声材料布置在隔声罩内

以在源强处削弱声场分布中100 Hz频率的能量

由此减小因干涉而造成的"达标扰民"现象。

Abstract

In order to evaluate and analyze the noise reduction effect of sound insulation cover for the UHV shunt reactor

the sound filed around the UHV shunt reactor is tested. It is confirmed that the noise energy of the reactor is mainly from 100 Hz. After comparing and analyzing three indexes of sound insulation performance

the insertion loss and noise attenuation for the sound insulation of the shunt reactor are tested in accordance with related standards. It is shown by the result analysis that with the increase of distance

the loss value at frequency of 200 Hz and above is obviously higher than that of 100 Hz. At the same time

the noise source attenuation is between 14 d B（A）and 18 d B（A）after adding sound insulation cover and the vibration frequency feature of the sound insulation cover is consistent with that of the shunt reactor proper. It indicates that the addition of the sound insulation cover only reduces the sound pressure of the surrounding sound field

but not eliminates the interference outside the cover generated by the100 Hz noise. It is suggested that sound absorption materials specific to 100 Hz frequency is arranged inside the sound insulation cover to weaken the 100 Hz energy in sound field distribution at the source strength so to reduce the phenomenon of"reaching standard but disturbing residents"due to interference.

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