35 kV开关室内电缆沟除湿方案的研究  

Research on Dehumidification Scheme of Cable Trench in 35 kV Switchgear Room

作　　者：罗维真 熊星星 陈聪 林鹏 LUO Weizhen;XIONG Xingxing;CHEN Cong;LIN Peng(Taizhou Power Supply Company,State Grid Zhejiang Electric Power,Taizhou 318000,China)

机构地区：[1]国网浙江省电力有限公司台州供电公司,浙江台州318000

出　　处：《电工技术》2022年第15期145-147,共3页Electric Engineering

摘　　要：35 kV开关柜电缆沟空气不流通,相对湿度高,而潮湿的空气进入开关柜降低了开关柜的绝缘水平,造成局部放电现象频发。为此通过改进现有除湿机来降低电缆沟的相对湿度,并间接降低开关柜内的相对湿度,从而提高开关柜的绝缘水平,避免局部放电现象频发。现场测试验结果证了该方案的可行性。The air in the cable trench of 35 kV switchgear is not circulating,and the relative humidity is high.The humid air entering the switchgear reduces the insulation level of the switchgear,resulting in frequent occurrence of partial discharge.For this reason,the relative humidity of the cable trench is reduced by improving the existing dehumidifier,and the relative humidity in the switch cabinet is indirectly reduced,thereby improving the insulation level of the switch cabinet and avoiding the frequent occurrence of partial discharge.The feasibility of the scheme is verified by the field test.

关 键 词：电缆沟 相对湿度 局部放电 除湿机 

分 类 号：TM591[电气工程—电器]