Transient Ground Fault: Test View
Transient Ground Fault tests the directional decision of transient ground fault relays in grids with isolated or compensated grounding. It produces the transient voltages and currents during a ground fault from a fault simulation with a pre-defined network model. The network simulation provides testing with realistic current and voltage waveforms. The model simulates a spur line. The calculated quantities are determined by the parameters of the line and the feeding network. Both three-phase systems and two-phase systems (e.g. for railway applications) can be simulated.
For testing the directional decision of steady-state ground fault relays, the steady-state fault quantities after the decay of the transient process can be continuously output. To allow for the testing of relays in both the forward and the reverse direction, the fault can be applied on different feeders. The test execution can be manually initiated or synchronized by using an external trigger signal.
