摘要
以某500 k V变电站为例,利用Cadna/A软件探讨了变电站声屏障优化方案,研究了设置位置、高度、形状、材料性质等因素对声屏障插入损失量的影响。结果表明,声屏障距离主变越近,其插入损失量越大,降噪效果越好;声屏障高度越高,插入损失量越大,当声屏障高度达到8.1 m时,站外噪声均达标;对于不同型式的声屏障如折板型(向内)、倾斜型(向内)、直立型、折板型(向外),折板型(向内)降噪性能相对较优;当声屏障采用吸声材料,将增强降噪效果;变电站声屏障设置方案应综合考虑降噪要求、安全运行、操作维护等因素。
Software Cadna/A is used to investigate insertion loss of noise barrier of one 500 k V substation influenced by factors such as location,height,shape and material in order to propose the optimization project. The result indicates that more insertion loss and noise reduction are obtained when the noise barrier is closer to main transformer; insertion loss increases as the height of noise barrier rises, and noise level reaches the standard when the height is up to8.1m; noise barrier of interior inverse type has better acoustic performance by contrast with inclined type,up-right type and external inverse type; acoustic performance can be improved when absorption material is added to the noise barrier. Overall, noise barrier setting should take essentials like noise reduction, safe operation and maintenance into consideration.
出处
《能源环境保护》
2016年第6期19-22,共4页
Energy Environmental Protection
基金
四川电力设计咨询有限责任公司科标项目(kj2015-b-5)
