套球壳型非接触式交流验电装置研究

杨鹏飞; 闻小龙; 倪晓明; 彭春荣

doi:10.11999/JEIT200286

套球壳型非接触式交流验电装置研究

doi: 10.11999/JEIT200286

1.
北京信息科技大学理学院北京 100192
2.
北京科技大学数理学院北京 100083
3.
中国科学院空天信息创新研究院传感技术国家重点实验室北京 100194

基金项目: 国家重点研发计划项目(2018YFF01010800)

详细信息

作者简介:
杨鹏飞：男，1986年生，讲师，研究方向为微传感器与微系统、电学量传感器、低频电场探测

闻小龙：男，1988年生，讲师，研究方向为微型传感器及系统

彭春荣：男，1979年生，研究员，研究方向为微传感器与微系统、新型电学量传感器及应用

通讯作者:
闻小龙　xiaolongwen@ustb.edu.cn

中图分类号: TP212.9
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- 被引次数: 0
出版历程
- 收稿日期: 2020-04-21
- 修回日期: 2020-11-12
- 网络出版日期: 2020-11-20
- 刊出日期: 2021-06-18

A Novel Non-contact AC Voltage Detector Based on Concentric Double-layer Spherical Shell Structure

1.
School of Applied Science, Beijing Information Science and Technology University, Beijing 100192, China
2.
School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
3.
State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China

Funds: The National Key R&D Program of China (2018YFF01010800)

摘要

摘要: 该文提出一种基于套球壳型电场探头的非接触式交流验电装置。套球壳型结构类似差分结构，可消除共模干扰噪声的影响。建立套球壳型结构的电场分布理论模型，得到外球壳表面的感应电荷密度和电场探头的灵敏度表达式。提出电场探头的等效电路模型，并设计了接口电路，最终成功研制出非接触式交流验电装置样机。测试结果表明：已研制样机的电压输出与施加电场之间有良好的线性关系，线性度达到0.66%，并且测试结果与计算结果有较好的一致性；当样机在0～45°范围内转动时，其输出的电压值仅降低了4.0%，说明验电装置的小角度旋转基本上不影响验电的准确性；越接近输电线路，样机输出的电压值的增大速度越快，阈值易于识别，说明越容易验电。
- 非接触式验电装置 /
- 电场探头 /
- 套球壳型结构
Abstract: A novel non-contact AC voltage detector based on the electric field probe of concentric double-layer spherical shell structure is presented. The concentric double-layer spherical shell structure is similar to the differential structure, which can eliminate the influence of common mode interference noise. The theoretical model of the electric field distribution of the double-layer spherical shell structure is established, and the induced charge density of the outer spherical shell surface is analyzed. Then the sensitivity expression of the electric field probe is obtained. Furthermore, the equivalent circuit model of the electric field probe is proposed and the interface circuit is designed. Finally, a prototype of the not-contact AC voltage detector is successfully developed. The test results show that there is a good linear relationship between the output of the prototype and the applied electric field, with a linearity of 0.66%, and the test results are in good agreement with the calculated results. Additionally, when the prototype rotates within the range of 0～45°, the output voltage is only reduced by a maximum of 4.0%, which indicates that the small angle rotation of the AC voltage detector does not affect the accuracy of electricity testing. Besides, the closer to the transmission line, the faster the output voltage of the prototype increases, and the threshold is easy to identify, suggesting that it is easier to verify the electricity.
- Non-contact voltage detector /
- Electric field probe /
- Concentric double-layer spherical shell structure

HTML全文

图 1 套球壳型电场探头结构示意图

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图 2 套球壳型电场探头电荷分布示意图

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图 3 套球壳型电场探头等效电路模型及接口电路

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图 4 验电装置样机结构框图及实物图

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图 5 匀强电场中标定测试曲线

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图 6 与高压极板间不同夹角验电装置样机输出变化

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图 7 与模拟导线不同距离验电装置样机输出结果

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表 1 匀强电场中的标定测试数据与理论计算结果

预设电压值(V)	实际施加电压值(V)	电场值(kV/m)	验电器样机输出(mV)	计算结果(mV)
0	0	0	0	0
500	576	0.576	8.0	8.6
1000	1198	1.198	19.4	17.9
2000	1992	1.992	34.0	29.7
3000	3030	3.030	48.2	45.1
5000	5080	5.080	86.0	75.7
10000	10120	10.120	172.4	150.8
20000	20300	20.300	347.4	302.5
30000	30400	30.400	512.8	452.9
40000	40450	40.450	679.8	602.7

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表 2 与高压极板间不同夹角验电装置样机输出及相对误差计算结果

验电装置轴向与极板之间的夹角(°)	0	30	45	60	90
验电装置输出(mV)	88.65	98.25	100.65	102.45	104.85
相对误差(%)	15.4	6.3	4.0	2.2	0

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