城市户内变电站主变室墙面吸声降噪优化设计探讨

Discussion of Optimal Design of Noise Absorption Technology for Transformer Room Walls of Urban Indoor Substations

为实现全球能源互联网的战略目标,建立绿色、环保、和谐的智能电网,电网环保技术是重要的技术环节。其中,变电站降噪设计技术可有效解决变电站噪声投诉问题,近年来愈加受到重视。针对变电站通用设计手册中的全户内、半户内变电站,通过试验测试和仿真分析技术,确定变电站吸声降噪设计中降噪效果的主要影响因素,提出一种模块化吸声降噪设计方法。采用该方法对某10 kV变电站进行降噪设计,根据仿真结果,室内声压级下降了约7.2 dB。

In order to fulfill the strategy target of global energy interconnection and construct a strong smart power grid,environmental protection technology of the power grid is a key point and must be emphasized.In this technical field,the design technology of noise reduction can solve the problem of substation noise pollution complaints and attracts more and more attention in recent years.In this article,the main influencing factors of the noise reduction and absorption effects in indoor and semi-indoor substation design are studied through measurement test and simulation analysis.And a modular design method of sound absorption for substation noise control is proposed.As an example,the noise control plan of a 10 kV substation is designed with this method.The simulation result shows that the sound level inside the room is decreased by about 7.2 dB.