Decision tree aided travelling wave based fault section identification and location scheme for multi-terminal transmission lines

Abstract

In this paper, decision tree aided travelling wave (TW) based fault section identification and location scheme has been proposed for multi-terminal transmission lines (MTTLs). The difference between fault inception time and travelling wave arrival time recorded is termed as travel time (TT) which is used to identify the faulty section. The decision is based on simple rule comparing the measured TT with the actual TT possible for the wave to travel along an individual transmission line. Upon recognizing the faulty section, the two adjacent arrival times of the faulty section can be used to estimate the fault location. The proposed scheme can also solve different issues that are prevailing in different transmission networks such as two-terminal transmission lines, series compensated transmission lines (SCTLs) and MTTLs. The performance of the proposed scheme is verified for different challenging fault scenarios by varying different fault parameters.