基于半消声环境声学测试平台的干式配电变压器噪声特性负载因素影响研究  

Influence of Load Factors on Dry-type Distribution Transformer Noise Level Based on Semi-anechoic Environment Acoustic Test Platform

作　　者：卢梦瑶 李国勇 陈静 曹浩 LU Mengyao;LI Guoyong;CHEN Jing;CAO Hao(China Three Gorges University,Yichang 443002,China;State Grid Hunan Electric Power Company,Changsha 410007,China;Qinghai Chemical Engineering Design&Research Institute Co.,Ltd.,Xining 810008,China)

机构地区：[1]三峡大学,湖北宜昌443002 [2]国网湖南省电力有限公司,湖南长沙410007 [3]青海省化工设计研究院有限公司,青海西宁810008

出　　处：《智慧电力》2020年第11期108-112,共5页Smart Power

基　　金：国家自然科学基金资助项目(51877168);国家电网公司科技项目(5216A019000P)。

摘　　要：为了研究用户负载因素对干式配电变压器噪声的影响,分析了负载因素与变压器噪声之间的理论关系,以1台800 kVA三相干式配电变压器为原型,对负载率、运行电压升高、不平衡负载、谐波负载等多种常见工况下的变压器噪声水平进行了实验研究,对比分析了不同工况下干式配电变压器的噪声水平变化。结果表明,谐波负载及运行电压升高是负载因素中导致干式配电变压器噪声显著变化的主要因素,负载率与不平衡负载对变压器噪声水平的影响较小。研究结果对于干式配电变压器噪声与振动控制具有参考意义。In order to investigate the influence of load factors on the noise level of dry-type distribution power transformers,theoretical relation between the load factors and transformer noise is analyzed.An 800 kVA three-phase dry-type distribution power transformer is used for the noise tests in the conditions of various load ratios,over-voltages,unbalanced loads and harmonic loads.The variations of tested transformer noise level are compared.The result shows that harmonic load and overvoltage is the dominant factors leading to obvious increase in transformer noise.While,load ratio and unbalanced load has less influence by comparison.The analysis results can be referenced in the noise and vibration control process of the dry-type distribution transformers.

关 键 词：噪声 负载率 不平衡负载 谐波负载 

分 类 号：TM421[电气工程—电器]