Frequency-Time Based Characteristic Estimation of Traveling Wave Fault Locator Approach in Overhead Transmission Line Based on TMR2103 Sensor

摘要

This paper introduces a new method of frequency-time traveling wave signal based on the TMR2103 sensor by detecting the external magnetic field produced by the electrical power cable of overhead transmission lines. A magnetic field unit circuit model for traveling waves was developed to analyze the behavior of time and frequency of the magnetic fields generated as a wave-front resulted from the short circuit. Simulation employing PSCAD/MATLAB model and experimental results of laboratory test presented demonstrate the successful use of the novel proposed method. The proposed method was validated both in a frequency-time characteristic curve and operating conditions and confirmed that the proposed method can provide high accuracy, and easy-to-operate low cost to the frequency-time measurement of the traveling wave for the overhead transmission line, which is not affected by the fault resistance and fault distance.