Determining the Location of a Fault in a Long Line by the Values of the Wave Process
The fault locating is review as one of the results of the algorithmic observation of a long line – the procedure for the formation of electrical quantities at any intended location of fault. The model of an intact part of the line between the place of physical observation and its arbitrary place (algorithmic model) serves as a tool for converting physically observable quantities into algorithmic ones. To date, various aspects of the algorithmic observation of a transmission line in the basis of complex values have been studied in detail. In this paper, we consider the specific features of the algorithmic observation of the fast damped transient in a long line, carrying information about the location of a single-phase earth fault in the feeder of the distribution network. Algorithmic model of a long line is described by difference equations. The instantaneous values of the output quantities of the algorithmic model form a vector whose hodograph has a regularity that helps detect the location of fault.