Research On Two-dimensional Spherical Power Frequency Electric Field Measurement System

This paper combines the existing method of measuring the electric field and developes the two-dimensional spherical electric field measurement system based on LabVIEW. The main contributions are as follows:1. The theoretical basis of spherical electric field sensor design is described. It comes out the relationship between induced voltage and electric field strength.2. The design and fabrication of two-dimensional spherical field measurement system is introduced. The system can measure the electric field strength, temperature and humidity for a long time in the absence of monitoring.3. Two-dimensional electric field measurement system for calibration experiments is done. The test results are in agreement with the existing equipment. The experiment shows that the probe has good linearity.4. According to the actual needs the visual monitoring interface based on LabVIEW is developed. The system has the online filtering and FFT power spectrum analysis functions. The monitoring interface is easy to operate and quickly reflect the measurement results.