SF_6气体湿度检测结果的分析与判断  

Analysis and Judgement of the SF_6 Gas Humidity Test Results

作　　者：蔡萱[1] 李善风[1] 肖雅[2] 罗晓颖 宋枭润 

机构地区：[1]湖北省电力公司电力科学研究院,湖北武汉430077 [2]武汉供电公司,湖北武汉430013 [3]襄阳供电公司,湖北襄阳441075 [4]宜昌远安县供电公司,湖北宜昌444200

出　　处：《湖北电力》2012年第5期18-20,共3页Hubei Electric Power

摘　　要：SF6电气设备中的湿度测试结果与测试时的环境温度有着密切的关系。因此,将测试值按照行标DL/T 506-2007中给出的方法换算到20℃的值后才能反映设备内气体湿度的真实情况。此外,当湿度修正值在限值附近时,需要进一步考虑SF6电气设备在工作压力下的露点值高低及当地环境变化对设备安全性能的影响后再做综合判断。只有这样,湿度测试结果在SF6电气设备的监督检测工作当中才具有现实意义。SF6 gas humidity is closely influenced by the environmental temperature of field-testing.In order to obtain the authentic results of the SF6 gas humidity in the electric equipment,the humidity results of field-testing should be converted to the values under the standard temperature（20℃）according to the method in the DL/T 506-2007.Moreover,when the revised results is close to the limitative results,we should further consider the influence of the dew point of the SF6 under working pressure and the local environmental changes to the safety performance of the SF6 electrical equipment before making a comprehensive judgment.Only in this way,humidity test results in SF6 electrical equipment supervision and inspection work are meaningful.

关 键 词：SF6 气体湿度 环境温度 工作压力 

分 类 号：TM852[电气工程—高电压与绝缘技术] TQ125.1[化学工程—无机化工]