A Power-Frequency Electric Field Sensor for Portable Measurement

Sensors

Qichao Ma¹  Qi Zheng¹  Zhanlong Zhang²  Dongping Xiao²  Yutong Xie² 

[1] System Security and New Technology, Chongqing University, Chongqing 400044, China;;State Key Laboratory of Power Transmission Equipment &

关键词: double spherical shell;    performance requirements;    portable measurement;    power frequency electric field;    sensor;   

DOI  :  10.3390/s18041053

来源: DOAJ

【 摘 要 】

In this paper, a new type of electric field sensor is proposed for the health and safety protection of inspection staff in high-voltage environments. Compared with the traditional power frequency electric field measurement instruments, the portable instrument has some special performance requirements and, thus, a new kind of double spherical shell sensor is presented. First, the mathematical relationships between the induced voltage of the sensor, the output voltage of the measurement circuit, and the original electric field in free space are deduced theoretically. These equations show the principle of the proposed sensor to measure the electric field and the effect factors of the measurement. Next, the characteristics of the sensor are analyzed through simulation. The simulation results are in good agreement with the theoretical analysis. The influencing rules of the size and material of the sensor on the measurement results are summarized. Then, the proposed sensor and the matching measurement system are used in a physical experiment. After calibration, the error of the measurement system is discussed. Lastly, the directional characteristic of the proposed sensor is experimentally tested.

【 授权许可】

Unknown