This paper presents a design for a fault diagnosis system (FDS) for tapped high/extra-high voltage (HV/EHV) power transmission lines (TL's). These tapped lines have two different protection zones. The proposed approach reduces the cost and the complexity of the FDS for these types of lines. The FDS, basically, utilizes fifteen artificial neural networks (ANN's) to reach its output diagnosis. Th...

It is proposed that the usage of the term structural facing be extended to include fault structures. Fault facing is defined as the direction in a fault plane which is at right angles to the trace of the bedding and is directed towards the younger beds. Certain types of faulted structures are found to have diagnostic patterns of facing variation.

Faulted phase identification is one of the segments conventional system protection that severely vulnerable in presence inverter-based resources (IBR) such as Type IV wind and solar PV power plants. The work presented this paper investigates effect IBRs on phasor-based faulted methods widely implemented contemporary commercial relays using theoretical analysis simulation results. Moreover, prem...

Context. A fault injection attack consists in modifying an intermediate value of a computation (using an electromagnetic pulse or by acting on the power supply of the circuit) and exploiting the faulted final result to gather information about the computation that would not be accessible in a correct final result. For instance, did you know that due to the simplicity of the arithmetic behind RS...

We have studied the role of boron ion energy in the engineering of dislocation loops for silicon light-emitting diodes sLEDsd. Boron ions from 10 to 80 keV were implanted in s100d Si at ambient temperature, to a constant fluence of 131015 ions/cm2. After irradiation the samples were annealed for 20 min at 950 °C by rapid thermal annealing. The samples were analyzed by transmission electron micr...

The paper analyses how the characteristics of medium-voltage network with insulated neutral and conditions under which single line-to-ground fault occurs (insulation condition value resistance) influence zero-sequence components voltage transformer station bus bar, current, currents faulted line other non-faulted power lines connected to bars. Assuming waveform medium voltages in is known, resi...

This paper presents a numerical study of the system unbalance and the fault impedance effect on faulted power system analysis. Two short circuit techniques, the symmetrical components and phase components algorithms are implemented and analyzed based on numerical simulations of the IEEE 13 bus test feeder. Test cases include voltage unbalance effect and fault impedance effect on during-fault vo...