试验间隔时长对UHF传感器有效高度的影响

doi:10.11985/2020.01.017

电气工程学报 ›› 2020, Vol. 15 ›› Issue (1): 117-121.doi: 10.11985/2020.01.017

• 特邀专栏: 微电网功率变换与稳定控制 • 上一篇下一篇

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试验间隔时长对UHF传感器有效高度的影响

包艳艳¹,刘康¹,温定筠¹,王碧霞²,陈宏刚¹,马建桥²

^1. 国家电网甘肃电力科学研究院兰州 730070
^2. 兰州交通大学自动化与电气工程学院兰州 730070

收稿日期:2019-08-09 出版日期:2020-03-25 发布日期:2020-05-13
作者简介:包艳艳,女,1990年生,工程师。主要研究方向为电网设备状态评价与分析。E-mail：1076453621@qq.com

Effect of Test Interval Time on Effective Height of UHF Sensor

BAO Yanyan¹,LIU Kang¹,WEN Dingjun¹,WANG Bixia²,CHEN Honggang¹,MA Jianqiao²

^1. State Grid Gansu Electric Power Research Institute, Lanzhou 730070 China
^2. College of Automation & Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070 China

Received:2019-08-09 Online:2020-03-25 Published:2020-05-13

摘要/Abstract

摘要：

UHF检测法被广泛用于GIS设备放电检测,UHF传感器的性能影响检测结果可靠性。为避免因传感器性能不良造成检测结果对现场工作指导性不强,需要对不同厂家、不同型号UHF传感器定期开展参数检测工作。两次试验之间的时间间隔可能会影响试验结果和工作效率,以某型号三只UHF传感器为对象,试验获取试验间隔时长对有效高度值变化的影响规律。试验结果表明,同一型号不同UHF传感器的最大有效高度和平均有效高度值存在明显差异,因此不可用一只传感器代表某一批产品;对同一传感器而言,试验间隔时长在5~20 min之间变化时,有效高度值对试验间隔时长的变化不敏感;多次试验结果所得数据具有一定的分散性,因此需用多次试验结果值表示传感器的有效高度。研究结果可为规范应用GTEM小室获取UHF传感器有效高度值的流程提供参考。

关键词: 间隔时间, 参数检测, 有效高度, UHF传感器

Abstract:

Ultra-high frequency(UHF) detection method is widely used in discharge detection for GIS equipment, the performance of UHF sensor affects the reliability of detection results. In order to avoid the poor performance of the sensor, the test results are not instructive to the field work, so it is necessary to carry out parameter detection periodically for different manufacturers and different models of UHF sensors. The time interval between the two tests may affect the test results and work efficiency. Three UHF sensors of a certain type are taken as the object, and the rule of the influence of the time interval on the change of the effective height is obtained. The test results show that the maximum effective height and average effective height of different UHF sensors of the same type are obviously different, so one sensor can not be used to represent a batch of products; for the same sensor, when the test interval changes from 5 to 20 minutes, the effective height does not change with the test interval time obviously. The data obtained from many test results are dispersive, so the effective height of the sensor needs to be expressed by the values of many test results. The research results can provide a reference for standardizing the process of obtaining the effective height of UHF sensor by using GTEM cell.

Key words: Interval time, parameter testing, effective height, UHF sensor

中图分类号:

TM561

包艳艳,刘康,温定筠,王碧霞,陈宏刚,马建桥. 试验间隔时长对UHF传感器有效高度的影响[J]. 电气工程学报, 2020, 15(1): 117-121.

BAO Yanyan,LIU Kang,WEN Dingjun,WANG Bixia,CHEN Honggang,MA Jianqiao. Effect of Test Interval Time on Effective Height of UHF Sensor[J]. Journal of Electrical Engineering, 2020, 15(1): 117-121.

图/表 6

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序号	试验间隔时长/min	最大有效高度		平均有效高度
序号	试验间隔时长/min	绝对值/mm	标准差 (%)	绝对值 /mm	标准差 (%)
A	5	25.29	9.38	10.20	9.88
	10	24.55	8.66	10.41	7.95
	15	23.50	9.52	9.54	8.56
	20	22.90	6.60	9.79	8.40
	平均值	24.06	—	9.98	—
B	5	20.06	6.74	10.30	7.77
	10	22.50	6.67	11.20	4.47
	15	21.62	5.27	10.43	5.67
	20	21.59	4.34	10.63	5.40
	平均值	21.44	—	10.64	—
C	5	31.22	4.34	13.32	6.44
	10	30.11	3.95	12.20	5.38
	15	30.33	6.57	12.27	5.52
	20	30.26	5.08	12.26	4.43
	平均值	30.48	—	12.51	—

试验间隔时长对UHF传感器有效高度的影响

Effect of Test Interval Time on Effective Height of UHF Sensor

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