Alternating current power supplies and rolling stock with 25 kV (50 or 60 Hz) and 15 kV (16.7
Hz) traction systems do not have the characteristics and behaviour of a typical three‐phase …

Efficient, resilient, and sustainable electricity delivery is a key cornerstone in increasingly
large and complex urban environments, where citizens expect to keep or rise their living …

Inrush current is high-magnitude current drawn by power transformers upon energization.
The severity of inrush current depends on factors such as the transformer's residual flux and …

Switching transients arises due to random switching of power apparatus results in
degradation of thermal and dielectric health of equipment and system as a whole. Controlled …

Grid-connected photovoltaic (PV) power systems are one of the most promising
technologies to address growing energy demand and ecological challenges. This paper …

Abstract Doubly-Fed Induction Generators (DFIG) are operated for wind energy production,
and as their capacity is increasing, their safety and reliability become more important …

Turn-to-turn short circuits occur due to insulation damage in transformer windings and these
may potentially result in catastrophic faults affecting electric networks. In fact, transformer …

One of the main causes for incorrect operation of the transformer relay protection are inrush
currents. The transient inrush currents occur when energizing the unloaded transformer, and …

The residual flux (RF) in three-phase transformers can dramatically increase the inrush
current when the transformer is energized. The RF can also severely interfere with …

Internal and external faults in a power transformer are discriminated in this paper using an
algorithm based on a combination of a discrete wavelet transform (DWT) and a probabilistic …