An interactive approach to fault location on overhead distribution lines with load taps

This paper presents a novel technique in single-ended fault location for overhead distribution systems based on the concept of superimposed components of voltages and currents rather than total quantities. It is shown that the fault locator is highly insensitive to variations in source impedances (both local and remote) and to the presence of taps with variable loads; this permits accurate fault location under a much wider range of system/fault conditions than has hitherto been possible.