Results 241 to 250 of about 2,352,765 (289)

Three Phase Transformer Transients

IEEE Transactions on Power Apparatus and Systems, 1974
This paper describes an electromaanetic circuit model of three ohase transformers capable of includina ferromacanetic non-linear effects includinga hvsteresis, suitable for anv number of windinas with a variety of interphase connections and applicable to any magnetic circuit confiauration.
H. Nakra, T. Barton
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Transient Oscillations in Multiwinding Transformers

IEEE Transactions on Power Apparatus and Systems, 1974
A method of calculating voltage oscillations in transformer windings during impulse test is presented.
P. Fergestad, T. Henriksen
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Capacitor switching and transformer transients

IEEE Transactions on Power Delivery, 1988
The impact of capacitor switching on transformer transients is evaluated. Two specific transformer failure events are described. Each of these failures coincided with the switching of a capacitor bank some distance away from the transformer. The causes of these failures are evaluated, and field-test transient voltage waveforms are duplicated by ...
R.S. Bayless, J.D. Selman, D.E. Truax, W.E. Reid   +3 more
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Transients in the Transform Domain

2018
In this first example you’ll see the full power of the Laplace transform in doing a traditional transient analysis. (You’ll also experience its full grubbiness!) Figure 4.1 shows a circuit that is suddenly hit by a unit step voltage v(t) = u(t), and our problem is to determine the resulting voltage e(t).
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Characterization of transients in transformers using discrete wavelet transforms

IEEE Transactions on Power Systems, 2003
This paper presents the characterization of transients resulting from faults in transformers using discrete wavelet transform (DWT). This characterization will aid in the development of an automatic detection method for internal incipient faults in the transformers.
K.L. Butler-Purry, M. Bagriyanik
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Laplace Transforms and the Amplitude Transients

International Journal of Electrical Engineering & Education, 1988
The direct Laplace transform with a finite upper limit of the integral is considered. This form is useful for evaluation of transients when the input is an amplitude modulated cosinusoidal pulse. In this case the inverse transform is easily calculated and the equation of amplitude transients can be established.
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Transient polarity protection of transformer using wavelet transform

7th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2006), 2006
Wavelet transform is a powerful tool for the analysis of transient phenomena because of its ability to extract information from the transient signals simultaneously in both the time and frequency domain. This paper presents a novel technique for accurate discrimination between an internal fault and a magnetizing inrush current in the power transformer ...
null Zaojun Ou, null Jinghan He, Z.Q. Bo, B.R.J. Caunce, A. Klimek   +4 more
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TRANSIENT AND STABLE TRANSFORMATION IN MANGO BY PARTICLE BOMBARDMENT

Acta Horticulturae, 2000
Genetic manipulation of plants requires a system for the introduction of foreign DNA into the cells. Particle Bombardment offers a rapid and efficient method for the delivery of DNA for transient and stable transformation studies. In this work we describe a system using mango proembryogenic masses of two polyembryonic cultivars ('Carabao' and ...
Cruz-Hernandez, A., Town, L. J., Cavallaro, A. S., Botella, J. R.   +3 more
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Transient modeling with a frequency-transform subspace algorithm and "transient+sinusoidal" scheme

2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628), 2003
We present an efficient modeling method for strong transient character audio signals. It is shown that the parametric non-stationary exponentially damped sinusoids (EDS) model permits good performance for time domain modeling of quasi-stationary signals or "weak" transients.
Rémy Boyer, Slim Essid
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Numerical Calculations of Three-Phase Transformer Transients

IEEE Transactions on Power Delivery, 2004
A three-phase, two-winding transformer model is presented in this paper. Nonlinear magnetizing curves are piecewise linearized, while the input winding capacitances are lumped onto the transformer terminals. A stiff system of differential equations in a state space, describing the transformer transient behavior, is solved using the -stable backward ...
Tokić, Amir, Madžarević, Vlado, Uglešić, Ivo   +2 more
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