Journal ArticleDOI
A current transformer model based on the Jiles-Atherton theory of ferromagnetic hysteresis
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TLDR
In this article, the hysteresis loop of the core material in a test current transformer is simulated using the Jiles-Atherton theory and compared with recorded and simulated waveforms and it is found necessary to replace the modified Langevin function used by Jiles and Atherton.Abstract:
The hysteresis loop of the core material in a test current transformer is simulated using the Jiles-Atherton theory. Comparisons are made between recorded and simulated waveforms and it is found necessary to replace the modified Langevin function used by Jiles and Atherton. Using an alternative function described in the paper, good agreement is achieved between test and simulated waveforms.read more
Citations
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Transformer modeling for low- and mid-frequency transients - a review
Juan A. Martinez,B.A. Mork +1 more
TL;DR: A review of transformer models for simulation of low and mid-frequency transients is presented in this paper, with an overview of development, implementation and limitations of the most useful models.
Journal ArticleDOI
Closure on "Transformer Modeling for Low- and Mid-Frequency Transients - A Review"
J.A. Martinez,B.A. Mork +1 more
TL;DR: In this article, the IEEE Task Force on Transformer Data for Modeling System Transients (TDS) has been formed to support the development of standards on modeling guidelines for the various power components.
Journal ArticleDOI
Correction of saturated current transformers secondary current using ANNs
TL;DR: In this paper, the use of an artificial neural networks scheme to correct CT secondary waveform distortions is proposed, which uses samples of current signals to achieve the inverse transfer function of CT.
Journal ArticleDOI
Integration of Accelerated Deep Neural Network Into Power Transformer Differential Protection
TL;DR: An accelerated convolutional neural network (CNN) based approach is designed for the discrimination between internal faults and inrush current to decrease the risk of false trips.
Journal ArticleDOI
Current-Transformer Saturation Compensation for Transformer Differential Relays
TL;DR: In this paper, the authors proposed an efficient compensation algorithm to reconstruct the fault and inrush currents which are distorted by current transformer saturation, which could substantially improve the performance and security of transformer differential relays.
References
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Journal ArticleDOI
Theory of ferromagnetic hysteresis
David Jiles,David L. Atherton +1 more
TL;DR: In this paper, a mathematical model of the hysteresis mechanisms in ferromagnets is presented based on existing ideas of domain wall motion including both bending and translation, which gives rise to a frictional force opposing the movement of domain walls.
Journal ArticleDOI
Numerical determination of hysteresis parameters for the modeling of magnetic properties using the theory of ferromagnetic hysteresis
TL;DR: In this article, various model parameters needed to describe hysteresis on the basis of the Jiles-Atherton theory can be calculated from experimental measurements of the coercivity, remanence, saturation magnetization, initial anhysteretic susceptibility, initial normal susceptibility, and maximum differential susceptibility.
Mathematical Models for Current, Voltage, and Coupling Capacitor Voltage Transformers Working Group C-5 of the Systems Protection Subcommittee of the IEEE Power System Relaying Committee,
D.A. Tziouvaras,Peter McLaren,George Alexander,Douglas Dawson,Jules Esztergalyos,Charles Fromen,Mietek Glinkowski,Irwin Hasenwinkle,Mladen Kezunovic,Ljubomir A. Kojovic,Bill Kotheimer,Richard Kuffel,Jerry Nordstrom,Stanley Zocholl +13 more
TL;DR: In this paper, a number of mathematical models used to represent the nonlinear behavior of the magnetic core of in-strument transformers are presented, and the transient response of the instrument transformer is compared to actual test results recorded in the laboratory.
Journal ArticleDOI
Mathematical models for current, voltage, and coupling capacitor voltage transformers
D.A. Tziouvaras,P.G. McLaren,G. Alexander,D. Dawson,J. Esztergalyos,C.W. Fromen,M. Glinkowski,I. Hasenwinkle,Mladen Kezunovic,L. Kojovic,B. Kotheimer,R. Kuffel,J. Nordstrom,S. Zocholl +13 more
TL;DR: In this article, a number of mathematical models used to represent the nonlinear behavior of the magnetic core of instrument transformers are presented, and the transient response of the instrument transformer is compared to actual test results recorded in the laboratory.
Journal ArticleDOI
Improved simulation models for current and voltage transformers in relay studies
TL;DR: In this article, improved models for current transformers (CT), potential transformers, and capacitive voltage transformers were presented for a relay software library based on the nonlinear power curve formulation of J.R. Lucas (1988).