Analysis of Distorted Electric Field Using ZigBee-Based Optical Measurement System

It is known that the distorted electric field is generated by a high-voltage alternating current (HVac) transmission line passing through a conductor, but few studies have accurately measured and analyzed it. In this article, we analyze the distorted electric field and distortion rate (DR) using a ZigBee-based optical measurement system. First, the key parameters of the integrated optical sensor (IOS) and the wireless module are discussed, respectively. Second, the plate–plate and ball–plate characteristics of the measurement system are studied, and the results show that the measurement system can accurately measure the uniform and nonuniform electric field within 25 kV/m. Third, the measurements are compared to the calculation values, and the results show that the relative error is within 12%. Finally, the distribution law of DRs when considering the grounded shielding wire and height of the obstacle is analyzed. The findings show that the DR varies with the height of the obstacle but is not affected by the grounded shielding wire.