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Non-intrusive DC voltage measurement based on resonant electric field microsensors
Journal of Micromechanics and Microengineering ( IF 2.3 ) Pub Date : 2021-04-21 , DOI: 10.1088/1361-6439/abf631
Pengfei Yang 1 , Xiaolong Wen 2 , Zhaozhi Chu 3 , Xiaoming Ni 1 , Chunrong Peng 4
Affiliation  

Based on the resonant electric field microsensors with coplanar electrodes, a novel non-intrusive measurement scheme of DC power-line voltage suitable for actual product is presented in this paper. Compared with using microsensors directly without some protection, employing the proposed scheme can avoid the influence of humidity and electromagnetic disturbance on non-contact voltage measurement. A theoretical model is developed to analyze the influence of the structural parameters of the proposed measurement scheme on its sensitivity and to predict the voltage response. Furthermore, the theoretical analysis reveals that the proposed scheme obtains the DC power-line voltage non-intrusively by measuring the voltage of a floating electrode. A prototype of the non-intrusive measurement apparatus of DC power-line voltage has been developed, calibrated, and tested. The prototype shows a favorable linear response characteristic with a linearity of 0.86%. And the experimental results are in good agreement with the theoretical results. The maximum relative deviation noticed is −2.16% over a range of voltages from −1000 V to 1000 V.



中文翻译:

基于谐振电场微传感器的非侵入式直流电压测量

本文基于共面电极谐振电场微传感器,提出了一种适用于实际产品的直流电源线电压非侵入式测量新方案。与直接使用微传感器而无需任何保护相比,采用所提出的方案可以避免湿度和电磁干扰对非接触电压测量的影响。开发了一个理论模型来分析所提出的测量方案的结构参数对其灵敏度的影响并预测电压响应。此外,理论分析表明,所提出的方案通过测量浮动电极的电压非侵入性地获得直流电源线电压。直流电源线电压非侵入式测量仪样机已研制、校准、并进行了测试。该原型显示出良好的线性响应特性,线性度为 0.86%。并且实验结果与理论结果吻合较好。在 -1000 V 至 1000 V 的电压范围内,注意到的最大相对偏差为 -2.16%。

更新日期:2021-04-21
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