地下低壓配電房通風(fēng)降噪仿真與分析
蔣丹1，鄧海宏2，溫文濤2，王璐2，趙書濤1
1 華北電力大學(xué) 電氣與電子工程學(xué)院院，河北 保定 071003；2 佛山電力設(shè)計(jì)院有限公司
摘 要：為合理控制居民區(qū)地下配電房的室內(nèi)溫度，降低機(jī)械通風(fēng)帶來的環(huán)境噪聲，建立了配電房風(fēng)速場仿真模型并對其進(jìn)行分析計(jì)算。以某住宅樓地下配電房為例，使用ANSYS13.0軟件對其中主要熱源——變壓器周圍的風(fēng)速場進(jìn)行模擬與分析。結(jié)果表明：在保證室內(nèi)電氣設(shè)備工作溫度前提下，優(yōu)化計(jì)算通風(fēng)量，通過電纜溝輔助進(jìn)行機(jī)械排風(fēng)，使配電房噪聲由之前的平均值79dB降低到71dB。通過修改模型參數(shù)，可用于其它地下配電房溫度場的模擬與預(yù)測，為前期設(shè)計(jì)提供參考。
關(guān)鍵詞：地下配電房；通風(fēng)；降噪；電纜溝；通風(fēng)量
中圖分類號：TM641 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2014)12-0021-05
Simulation and Analysis of Ventilation and Noise Reduction in Underground Low-Voltage Power Distribution Room
JIANG Dan1, DENG Hai-hong2, WEN Wen-tao2, WANG Lu2, ZHAO Shu-tao1
1 School of Electrical & Electronic Engineering, North China Electric Power University, Baoding 071003, China;2 Foshan Electric Power Design Institute Co., Ltd, Foshan 528200, China
Abstract: 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 field in distributing substation. Taking certain dwelling house for example, this paper simulated and analyzed the main heat source from the wind field 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 dB to 71 dB. If the model parameters were modified, the model could be used to predict the temperature field in the same kind of substations, so as to put forward an optimum proposal for noise treatment, and provide more references for preliminary design.
Key words: underground substations; ventilation; noise reduction; raceway; amount of ventilation
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