110kV户内变电站降噪措施及设计优化研究  

Research on Noise Reducing Measures and Design Optimization of 110 kV Indoor Substation

作　　者：耿明昕[1,2] 吴健[1,2] 安翠翠[1,2] 吕平海[1,2] 白晓春[1,2] 

机构地区：[1]国家电网环境保护实验室,陕西西安710054 [2]国网陕西电力科学研究院,陕西西安710054

出　　处：《陕西电力》2013年第11期80-85,共6页Shanxi Electric Power

基　　金：国家电网公司科技基金资助项目"110kV户内变电站节能降噪研究与应用"

摘　　要：对现有110 kV户内变电站噪声控制水平进行分析,提出了主变室的通风方式由自然通风取代强迫通风,避免了风机噪声对环境的影响。综合考虑主变室换热和消声器对通风的影响,确定了通风口尺寸。对消声器、隔声门、吸音挂板等常用降噪措施进行了分析与理论计算,提出了较为合理的设计方案。以基于Kirchhoff公式原理开发的变电站噪声预测系统对户内变电站噪声进行预测和优化设计,当主变噪声在自由声场条件下为57dB(A)、通风口透声率为30%、墙壁吸声系数为0.3时,厂界噪声小于40 dB(A)。通过宝鸡110 kV某变电站示范工程的实际应用,验证了该设计优化方案的可行性。Based on the analysis of noise control about 110 kV indoor substation,natural ventilation in main transformer chamber is proposed to substitute for forced ventilation in order to avoid environmental impact caused by fan＇ s noise.The size of ventilation orifice is determined considering heat exchange in main transformer chamber and ventilation influence by muffler.The noise prediction system of substation based on Kirchhoff formula is taken as a tool to optimize noise control design of indoor substation.The noise at the boundary is lower than 40 dB （A） when the noise of main transformer is 57 dB （A） in free sound field,the sound transparent ratio is 30％,and the sound absorption coefficient is 0.3.The practicability of this optimized design is demonstrated in an 110kV indoor substation in Baoji.

关 键 词：户内变电站 Kirchhoff公式 噪声预测 降噪措施 优化设计 通风方式 

分 类 号：TM632.1[电气工程—电力系统及自动化]