This article studies the location of faults in electrical distribution system based on processing short-circuit signals. For this analysis, simulation cases using CYME software is proposed, Wavelet transform to study signal obtained and decomposed. The minimum spanning tree method proposed so that fault optimal reconnection time minimal. analysis considers reclosers’ will serve as information r...

This paper presents a method based on neural networks to detect broken rotor bars and end rings in squirrel cage induction motors. In the first part, detection methods are reviewed and traditional methods of fault detection as well as dynamic model of induction motors are introduced using the winding function method. In this method, all stator and rotor bars are considered independently in ord...

[1] Several lines of evidence, including remote triggering of earthquakes and modulation of seismic tremor by Earth tides, suggest that faults weakenwhen subject to shaking and dynamic stresses associatedwith the passage of seismic waves. However, the origin of such dynamic weakening is poorly understood. Here we explore the role of acoustic resonance for dynamic fault weakening using laborator...

Computer simulation of electric motor operation is particularly useful for gaining an insight into their dynamic behaviour and electro-mechanical interaction. A suitable model enables motor faults to be simulated and the change in corresponding parameters to be predicted without physical experimentation. This paper presents both a theoretical and experimental analysis of asymmetric stator and r...

Retention of a surgical item is a preventable event that can result in patient injury. AORN's "Recommended practices for prevention of retained surgical items" emphasizes the importance of using a multidisciplinary approach for prevention. Procedures should include counts of soft goods, needles, miscellaneous items, and instruments, and efforts should be made to prevent retention of fragments o...

The possibility that the developmental effects of genes are influenced by their neighbors in the chromosomes has only recently become accessible to experiment. The first demonstration of such an effect was given by STURTEVANT (1925). Two Bar genes in Drosophila melanogaster, placed in the same chromosome as a result of unequal crossing over, are more effective than two similar genes present in ...

During their long-term outdoor field service, overhead transmission lines will be exposed to strikes by lightning, corrosion by chemical contaminants, ice-shedding, wind vibration of conductors, line galloping, external destructive forces and so on, which will generally cause a series of latent faults such as aluminum strand fracture. This may lead to broken transmission lines which will have a...