Earth leakage detecting method for e.g. meshed industrial-alternating current and three phase supply network, involves determining earth leakage-afflicted loss when curve course is straight line with negative increase
AT500195A2
Selective transient earth fault detection in polyphase networks involves comparing displacement voltage and null current curves, evaluating proportionality factor to detect earth leakage and direction
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Method for detecting and locating low-resistance and high-impedance ground faults in electrical supply networks
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Determining parameters of Petersen-coil compensated network without de-tuning the coils, by feeding composite current into zero-phase system, and measuring voltages
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Earthing connection recognition method for 3-phase network using evaluation of charge curve obtained by integration of current from voltage zero transition and zero voltage limit value point
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Method for the selective detection of earth fault wipers in three-phase networks
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Method for detection of an earth fault loss in a three phase supply network involving differential measurement of current pulsing so that the system is linearized about an operation point
DE10146294C1
Network compensation determination method for tuning Petersen coil uses equations obtained from measured phase voltages and line currents for calculation of capacitive zero current
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Determining distance of single-pole earth connection on stub line involves measuring phase voltages, conductor currents, computing symmetrical components for different null impedances
