期刊文献+

局部表面电导率测量仪器及测试方法 被引量:7

Instruments and Method for Measuring Partial Surface Conductivity
原文传递
导出
摘要 为推广局部表面电导率法在绝缘子污秽程度评估中的应用,结合试验,介绍并比较了2种测量仪器的工作方法和应用性能。2种仪器均为通用仪器,1种是由调压器、精细电阻构成的简易测量系统,另1种是专用电阻测量仪器。采用这2种仪器对玻璃板上不同污秽的局部表面电导率值进行了测试,结果显示:不同的测量装置及电极型式对相同污秽度表面的局部表面电导率测量值的影响很小;在0.05~0.40mg/cm2的盐密范围内,2种仪器测量的表面电导率的最大差异〈1%,而采用矩形电极和圆形电极的测量结果差异〈3%;电源频率对局部表面电导率有较大影响,频率增大10倍时,局部表面电导率会增加约10%;电源电压对局部表面电导率几乎没有影响,1V与20V电源电压的局部表面电导率测量值差异约为1%。试验表明,局部表面电导率法在实际应用中简易可行且准确度高,有较好的应用前景。 In order to extend the application of partial surface conductivity (PSC) measurement in contamination evalua- tion of insulators, we demonstrated and compared the mechanism and performance of two devices. Both of them are general instruments, one of which is made up of voltage regulator and precision resistance, and the other is a special measuring device of resistance. Using these two devices, we measured the PSC of glass plates with different pollution le- vels. It is shown that there is only small difference of the results between different measurement devices and different probe shapes: with salt density within 0.05-0.40 mg/cm2, the difference between the PSC obtained by the two devices is less than 1%, and that between the PSC obtained by rectangular electrodes and round electrodes is less than 3%. Power supply's frequency may have significant impact on PSC measurement: with a ten times increase in frequency increases, the PSC rises by about 10%. Yet power supply's voltage has hardly any influence on PSC measurement: there is differ- ence about 1% between the PSC obtained using the voltage of 1 V and 20 V. It is concluded that the PSC method is simple, feasible, highly accurate, and hence promising in application.
出处 《高电压技术》 EI CAS CSCD 北大核心 2014年第3期878-884,共7页 High Voltage Engineering
基金 国家重点基础研究发展计划(973计划)(2009CB724503) 南方电网公司重点科技项目(编号略)~~
关键词 盐密 污秽度测量 表面电导率 电源电压 测量误差 电源频率 salt deposit density measurement of contamination degree surface conductivity power voltage measuringerror power frequency
  • 相关文献

参考文献21

二级参考文献181

共引文献280

同被引文献70

引证文献7

二级引证文献42

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部