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Conventional transmission line model validation methods are not suitable for validating Electromagnetic Transient (EMT) models of cascaded transmission systems such as cross-bonded cables due to accumulation of errors in repeated matrix multiplications. This paper introduces an approach to accurately validate EMT models of such cascaded transmission systems. This technique utilizes four composite...
Cables, printed circuit boards, and VLSI interconnects are commonly modeled as multiconductor transmission lines. Models of electrically long transmission lines are memory and time consuming. In this paper, a robust and efficient algorithm for the generation of a delay-based model is presented. The impedance representation via the open-end matrix Z is analyzed. In particular, the rational formulation...
In this paper, a new multiconductor transmission line model for the simulation of electromagnetic transients, which takes into account non-uniform and frequency dependent electrical parameters, is presented. The proposed model is based on the method of characteristics and has the same mathematical form either for a single phase line or a multiconductor line. The results obtained using the proposed...
In this paper the influence of earth's conductivity and permittivity frequency dependence are evaluated when calculating transversal and longitudinal transmission lines' parameters directly from numerical integration of Carson's modified expressions. As an example of the importance of properly considering the frequency-dependent soil model, an actual 440 kV single three-phase transmission-line was...
The accurate modeling of 3-phase Gas-Insulated Lines (GIL) buried directly into the earth is the objective of this paper. The frequency-dependent terms that correspond to the influence of the nonhomogeneous earth, of the SF6/N2 mixture insulator and of the skin effect are integrated in the per-unit length impedance and admittance matrices of the system. After a proper modal transformation, the modal...
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