GIS局部放电特高频传感器有效高度的比对测试

发布时间：2018-06-19 17:55

本文选题：气体绝缘金属封闭式开关设备 + 局部放电　；参考：《电力自动化设备》2017年07期

【摘要】：为提高气体绝缘金属封闭式开关设备(GIS)局部放电特高频(UHF)检测技术现场应用的有效性,有必要对UHF传感器耦合性能进行校核。为此,建立了基于吉赫兹横电磁波(GTEM)小室的UHF传感器有效高度测试平台,采用0.3~1.5 GHz频段内的平均有效高度和该频段内有效高度大于等于2 mm的百分比表征UHF传感器的耦合性能。基于GTEM750小室,采用时域脉冲和扫频参考法对UHF传感器的有效高度进行了比对测试,并与GTEM1500小室的测试结果进行了比较;基于GTEM750小室的时域脉冲参考法,讨论了UHF传感器类型、工装、安装角度对有效高度测试结果的影响。研究结果表明,不同方法和平台对UHF传感器在0.3~1.5 GHz频段内的平均有效高度测试结果的偏差在±1 mm以内;UHF传感器类型、工装、安装角度对有效高度有显著的影响。
[Abstract]:In order to improve the effectiveness of field application of gas insulated metal closed switchgear (GIS) partial discharge UHF (UHF) detection technology, it is necessary to check the coupling performance of UHF sensors. Therefore, a UHF sensor effective height measurement platform based on GTEM cell is established. The coupling performance of UHF sensor is characterized by the average effective height in the frequency band of 0.3 ~ 1.5 GHz and the percentage of the effective height in the band greater than or equal to 2 mm. Based on GTEM750 cell, the effective height of UHF sensor is compared with that of GTEM1500 cell by time-domain pulse and sweep reference method, and the type of UHF sensor is discussed based on the time-domain pulse reference method of GTEM750 cell. The effect of installation angle on effective height test results. The results show that different methods and platforms have a significant effect on the effective height of UHF sensors with the deviation of the average effective height of the UHF sensor within 卤1 mm in the frequency band of 1.5GHz. The type of the UHF sensor, the installation angle and the installation angle have a significant effect on the effective height of the UHF sensor.
【作者单位】：国网福建省电力有限公司电力科学研究院;
【分类号】：TM855

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