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- TILAYER MEDIUM, P. Sarajc̆ev, S. Vujević, D. Lovrić
- 2011

This paper presents a novel time-harmonic electromagnetic model for determining the current distribution on conductor grids in horizontally stratified multilayer medium. This model could be seen as a basis of the wider electromagnetic model for the frequency-domain transient analysis of conductor grids in multilayer medium. The total number of layers and… (More)

- Slavko Vujevic, Dino Lovric, Zdenko Balaz
- SoftCOM 2009 - 17th International Conference on…
- 2009

In this paper the lightning current function proposed in IEC 62305–1 is approximated by a linear combination of exponential functions in the time domain, which will afterwards be analytically transformed into the frequency domain. The unknown coefficients of the exponential approximation are computed using the least squares method. Lightning current… (More)

In this paper, a frequency-domain-based transient electromagnetic model of grounding system in horizontally stratified multilayer medium is presented. The basis of the model is an improved version of the time-harmonic electromagnetic model of grounding system. Using the originally developed continuous numerical Fourier transform algorithm, the results… (More)

- Tonci Modric, Slavko Vujevic, Dino Lovric
- Advances in Engineering Software
- 2015

Numerical models for computing low-frequency electromagnetic fields can contain spatial 2D finite elements, which are numerically most demanding due to problem of singularity. In this paper, an advanced time-harmonic quasistatic surface charge simulation method for computation of scalar electric potential and electric field intensity distribution is… (More)

- S. Vujevic, P. Sarajcev, A. Botica
- 2008 16th International Conference on Software…
- 2008

This paper presents a novel computational algorithm for the determination of the overhead power line electromagnetic fields. Algorithm is based on the separation of the phase conductor currents into its longitudinal and transversal components and application of the Biot-Savart law for the computing of the magnetic field. Longitudinal component of the… (More)

- Petar Sarajcev, Slavko Vujevic
- SoftCOM 2009 - 17th International Conference on…
- 2009

This paper presents a brief review of the most important methods available for the grounding grid analysis. This includes numerical methods intended for the grounding grid direct current, time-harmonic current and transient current energization. Emphasis will be given to the methods involving transient grounding grid analysis. Available numerical methods… (More)

- I. Sarajcev, P. Sarajcev, S. Vujevic
- 2008 16th International Conference on Software…
- 2008

This paper presents a mathematical model of the lightning stroke path development. Any lightning model is a mathematical construct design to reproduce certain aspects of the physical process involved in the lightning discharge. This mathematical model resides on the underlying observed physical properties of the lightning stroke development. It uses Monte… (More)

- Vedran Boras, Slavko Vujević, Dino Lovrić
- 2010

The accurate and fast computation of the per unit length (pul) internal impedance of rectangular conductors is required in electromagnetic analysis of various engineering and scientific problems where high current frequencies are involved [1, 2]. This pul internal impedance of a rectangular conductor can also be used in more complicated conductor structures… (More)

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