Research and implementation of PLC for multiport traveling wave fault location in the medium voltage distribution network

This paper presents a multiport traveling wave fault location method which is based on PLC. In this method, we use the different time that traveling wave, which is generated at the moment when a fault arising in the medium voltage distribution lines, arrive at each transformer, then use the PL3105 chip sending the time signal to the central station, after the central station getting the time signal, it analysis these time signal to determine quickly the location of the fault. This method does not require external signal source, can be fast and accurate fault location. This method improves the efficiency of distribution network fault location significantly. This article gives the design of multiport traveling wave fault location, and use the PL3105 chip to send high-speed signal at the 10KV distribution network.