„Locating Earth-Faults in Compensated Distribution Networks by means of Fault Indicators “ (original) (raw)

This paper presents theory on transients generated during the initiation of earth-faults. The transients are used for detection and location of faults by means of fault-indicators. Electric and magnetic field measured by the indicator is shown to be a scalar/vectorial sum as a function of line configuration and heights above ground. A field-test in a 22kV rural network is performed in order to investigate coherence with theory, by measuring phase voltages and currents together with the fault-current. A model of the network is established and also a model for the calculation of the electromagnetic field in the position of the indicator is presented.