地下低压配电房通风降噪仿真与分析

为合理控制居民区地下配电房的室内温度,降低机械通风带来的环境噪声,建立了配电房风速场仿真模型并对其进行分析计算。以某住宅楼地下配电房为例,使用ANSYS13.0软件对其中主要热源——变压器周围的风速场进行模拟与分析。结果表明:在保证室内电气设备工作温度前提下,优化计算通风量,通过电缆沟辅助进行机械排风,使配电房噪声由之前的平均值79 d B降低到71 d B。通过修改模型参数,可用于其它地下配电房温度场的模拟与预测,为前期设计提供参考。

Simulation and Analysis of Ventilation and Noise Reduction in Underground Low-Voltage Power Distribution Room

In order to control the temperature of residential underground distributing substations reasonably and to reduce environmental noise caused by mechanical ventilation, this paper built up and calculated the simulation model of wind fi eld in distributing substation. Taking certain dwelling house for example, this paper simulated and analyzed the main heat source from the wind fi eld around the main transformer with the software, ANSYS13.0. The simulation results show that under the normal temperature of electrical equipment in the room, the ventilation volume was optimized by machinery exhaustion assisted by cable trench, and the noise level decreased from 79 d B to 71 d B. If the model parameters were modifi ed, the model could be used to predict the temperature fi eld in the same kind of substations, so as to put forward an optimum proposal for noise treatment, and provide more references for preliminary design.