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《Electric Engineering》 2018-15
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Improvement and Application of Moisture-proof Measures for Outdoor Terminal Box in Converter Station

ZHENG Xingxing;LI Jin′an;SONG Shubo;BAO Wei;CGS EHV Power Transmission Company,Guangzhou Bureau;  
In order to find out the weak points of moisture-proof in outdoor terminal box,identify the causes of terminal box be affected with damp,this paper explores a systematic solution to the problem of the outdoor terminal box is easy to be affected with damp in high humidity areas.Combined with the actual operation condition of outdoor terminal boxes in a converter station,after long-term observation and practice,it is proved that the moisture-proof design defects in structure such as the ventilation of the terminal box under high humidity are the important causes for terminal box being affected with damp.Meanwhile,on the basis of the monitoring data,it analyzes the mechanism of terminal box being affected with damp,and points out the limitations of heating dehumidification method.A perfect and improved scheme for moistureproof of the current outdoor terminal box is put forward,and the comparative study of cooling and heating dehumidification is carried out.It is proved that the moisture-proof effect of the developed cooling dehumidifier is significant,and it has agood energy-saving benefit.
【CateGory Index】: TM73
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