Fault Location Techniques
نویسندگان
چکیده
Overview of fault location techniques for HV (EHV) transmission lines as well as for distribution networks is presented. One-end and two-end fault location for traditional uncompensated transmission lines is considered first. The presented two-end fault location is based on unsynchronised measurements at the line terminals. Then the technique with phase co-ordinates approach is utilised for locating faults in series-compensated networks. A single line and parallel lines with series capacitor compensation are considered. Problems encountered in fault location in distribution networks are discussed and the solutions are indicated. Results of large ATP-EMTP testing and evaluation of accuracy of the fault location algorithms are reported and discussed.
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Conventional fault location methods using voltages and currents of one terminal are not applicable to multiterminal transmission lines. So far some techniques have been presented to solve fault location problem for multi-terminal transmission lines. In these methods, lumped or distributed frequency domain models of transmission lines have been used. In multi terminal lines, faulty section shoul...
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