A Power-Frequency Electric Field Sensor for Portable Measurement.

Area of Science:

• Electrical Engineering
• Sensor Technology
• High-Voltage Safety

Background:

• Traditional electric field measurement instruments lack portability and specialized performance for high-voltage environments.
• Inspection staff in high-voltage settings require enhanced health and safety protection through accurate electric field monitoring.

Purpose of the Study:

• To propose and validate a new portable electric field sensor for inspection staff safety in high-voltage environments.
• To theoretically deduce the measurement principle and analyze influencing factors of the novel sensor.

Main Methods:

• Theoretical deduction of mathematical relationships between induced voltage, circuit output, and free-space electric field.
• Simulation analysis of sensor characteristics, including the influence of size and material.
• Experimental validation with a physical prototype, including calibration and error analysis.
• Experimental testing of the sensor's directional characteristics.

Main Results:

• Theoretical analysis established the sensor's electric field measurement principle and key influencing factors.
• Simulation results closely matched theoretical predictions, confirming sensor behavior.
• Experimental data, after calibration, demonstrated the system's measurement accuracy and discussed error sources.
• Directional characteristics of the proposed sensor were successfully determined through experimentation.

Conclusions:

• The proposed double spherical shell sensor offers a viable solution for portable electric field measurement in high-voltage environments.
• The study successfully validated the sensor's theoretical principles through simulation and physical experiments.
• The developed sensor enhances health and safety for inspection personnel by providing reliable electric field monitoring.