Smart traveling wave fault location system based on electronic transformer

The existing electronic transformer sampling frequency to meet the functional requirements of the measurement, protection, its sampling frequency is lower than 12.8K. Traveling wave fault location device required signal bandwidth of the M-Class. The required signal bandwidth should reach 500K even with the Line traps affect, which affected its promotion and application of digital substation. The authors proposed shunt sampling method to collect data in electronic transformer acquisition side and in part of the merging unit deal with common signal and traveling wave signal program. The program is both to meet the needs of the general device of the general signal, but also to meet the needs of the traveling wave fault location device on the traveling wave signal of the transient high-speed sampling. Smart traveling wave fault location device directly receive the IEC61850 standard format of digital signal processing fault location Algorithm to reduce the analog-digital conversion and processing sectors, ranging efficiency.