The Fault Location of Distribution Network Based on Narrowband Communication Technology

In this paper, we propose a fault location of distribution network based on narrowband communication technology, which belong to the field fault monitoring and location of distribution network. The whole system consists of master station server, light source module, EDFA optical amplifier module, optical wavelength division multiplexer, optical wave guide magnetic field sensor, photoelectric conversion module, electrical signal filtering and amplification module, analog digital conversion module, electrical signal processing module, narrowband communication module and solar cell module. The optical wave guide magnetic field sensor is installed on the cable, and the other parts are installed on the pole. The fault location system adopts narrowband wireless communication technology for data transmission, which reduces the system cost and power consumption. At the same time, the measured data and historical data are used to obtain the fault point, which improves the accuracy of fault location.