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

Pengfei YANG; Xiaolong WEN; Xiaoming NI; Chunrong PENG

doi:10.11999/JEIT200286

Volume 43 Issue 6

Jun. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(6): 1637-1643

Pengfei YANG, Xiaolong WEN, Xiaoming NI, Chunrong PENG. A Novel Non-contact AC Voltage Detector Based on Concentric Double-layer Spherical Shell Structure[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1637-1643. doi: 10.11999/JEIT200286

Citation:

Pengfei YANG, Xiaolong WEN, Xiaoming NI, Chunrong PENG. A Novel Non-contact AC Voltage Detector Based on Concentric Double-layer Spherical Shell Structure[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1637-1643. doi: 10.11999/JEIT200286

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

doi: 10.11999/JEIT200286

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)

Received Date: 2020-04-21
Rev Recd Date: 2020-11-12

Available Online: 2020-11-20

Publish Date: 2021-06-18

Abstract

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

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References(21)

References

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