摘要
在用冷凝式露点仪对某500 k V变电站组合电器进行湿度测试时,发现部分气室湿度超标,用阻容湿度仪测试的数据却在合格范围内。通过3台仪器现场对比测试及分析,确定数据差异是因所用仪器原理不同和露点仪使用不规范造成的。总结现场测试SF6气体湿度注意事项,为技术人员提供参考。
A part of GIS chamber humidity of one 500 k V substation exceeded the standard when it was tested by a condensation dew point instrument,however,when tested by using resistance capacity humidity instrument,the data were in the qualified range.Through contrast between three humidity instruments,it is concluded that the data difference was caused by different principle of humidity instrument and non-standardized operation.Points for attention are summarized for humidity measurement of SF6 gas in substation,which could provide references for the tester.
出处
《山西电力》
2016年第4期28-30,共3页
Shanxi Electric Power
关键词
SF6气体湿度测试
露点法
阻容法
humidity measurement of SF6 gas
dew point method
resistance capacity method
