开关柜凝露现象机理分析研究  

Analysis on Condensation Phenomenon Mechanism of Switchgear

作　　者：刘若溪[1] 白宝军 郭沁[3] 耿江海 程序[1] 车瑶 桂媛[1] 徐兴全[1] 郭卫 LIU Ruoxi;BAI Baojun;GUO Qin;GENG Jianghai;CHENG Xu;CHE Ya;GUI Yuan;XU Xingquan;GUO Wei(State Grid Beijing Electric Power Company,Beijing 100075,China;Erdos Electric Power Bureau Substation Operation Management Office One,Inner Mongolia Erdos 017000,China;School of Electrical and Electronic Engineering,North China Electric Power University,Hebei Baoding 071003,China;Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Hebei Baoding 071003,China)

机构地区：[1]国网北京市电力公司,北京100075 [2]鄂尔多斯电业局变电管理一处,内蒙古鄂尔多斯017000 [3]华北电力大学电气与电子工程学院,河北保定071003 [4]河北省输变电设备安全防御重点实验室,河北保定071003

出　　处：《高压电器》2018年第10期80-84,共5页High Voltage Apparatus

基　　金：国家电网公司科技项目(5202231402LB).

摘　　要：开关柜内部产生凝露时,会使零部件腐蚀和电气设备绝缘性能下降,引发设备绝缘闪络等。针对上述现象,在人工环境气候室内搭建了开关柜凝露观测系统,记录了开关柜内不同温湿度条件下凝露形成时间。结果表明:凝露形成时间是由柜内温度和相对湿度共同决定的,柜内温度越高、相对湿度越大,凝露形成时间越短。文中分析了含湿量与温度和相对湿度的关系,得出含湿量随温度和相对湿度的升高而增大,从理论上解释了凝露形成时间与温湿度之间的关系,证明了试验结果的准确性。It will corrode the parts and decline electrical equipment insulation property after condensation formed in-side switchgear, which could initiate insulation flashover of equipment. In connection with the phenomenon, a condensation observation system of the switchgear is set up in artificial climate chamber, and the condensation formation time under different temperature and relative humidity in the interior switchgear is recorded. The results show that, the condensation formation time is determined by temperature and relative humidity, the higher the temperature, and the greater the relative humidity, the shorter the time of condensation formation. By analyzing the relationship between humidity ratio and temperature with relative humidity, it is concluded that humidity ratio increases with the temperature and relative humidity, which explains the connection between the condensation formation time and temperature with relative humidity in theory, and proves the accuracy of the test results.

关 键 词：开关柜 观测系统 凝露时间 温度 相对湿度 含湿量 

分 类 号：TM591[电气工程—电器]