In most of the work that investigates backflashover phenomenon due to direct lightning strikes, using EMT-type simulators, transmission lines are represented by J. Marti model and ground effect is computed employing R. Carson’s formulations. Thus, displacement current neglected, line voltage definition corresponds wire potential formulation, soil resistivity considered frequency-independent. Th...

Various inductive loads used in all industries deals with the problem of power factor improvement. Capacitor bank connected in shunt helps in maintaining the power factor closer to unity. They improve the electrical supply quality and increase the efficiency of the system. Also the line losses are also reduced. Shunt capacitor banks are less costly and can be installed anywhere. This paper deal...

In this paper, a novel DC bus voltage control strategy of the traction system is proposed for overhead line and energy storage device (ESD) hybrid railway vehicles. This realizes increase regenerative brake reduction consumed in powering by boosting motor voltage. When boost applied, separated from breaker, which generally equipped. paper proposes considering both breaker operation management o...

The full-bridge submodules (FB-SMs) in hybrid modular multilevel converters need to absorb the enormous energy stored dc side and arm inductors during fault blocking, which may lead severe overvoltage. An energy-absorbing branch (EAB) composed of metal oxide varistor (MOV) thyristors is proposed this letter. No extra power loss produced by EAB normal operation. can a part reduce absorbed FB-SMs...