Time Domain Electromagnetic Transient Analysis of Aerial Nonuniform Transmission Lines Excited by an Incident Electromagnetic Field

This paper presents a new technique for analyzing a non-uniform transmission line (NUTL). This method expands the differential equations of voltage and current as the slope functions. Then, differential equations are solved using the explicit Runge–Kutta technique with the fourth-order method with four stages. It is shown that the proposed method can be used not only for analyzing the NUTL but also for analyzing the no-uniform waveguides (NUWG). Additionally, it is shown that the sensitivity of the proposed method concerning the discretization error is suitable. Several theoretical and practical NUTLs and NUWG are investigated to verify the proposed method’s accuracy and advantages. The performance of the proposed method is compared with those obtained by the other popular techniques, such as uniform cascaded sections (UCS).

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“…To this end, the per-unit-length parameters can be computed by the scalar potential φ ( x ) given by Eqs. ( 13 ) and ( 14 ) 20 . …”

Section: Theoretical Formulationmentioning

confidence: 99%

A new method for analyzing non-uniform guiding structures

Yasi

Boozari

Alijani

et al. 2023

Sci Rep

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“…Baharian and Rashed Mohassel [21] developed a boundary model for regulating energy coupling within a system of coupled transmission lines based on the capacity of the media to generate harmonics with space-time modulation. Sánchez-Alegría et al [3], Park et al [20], and Kabalci. [22] provided simulation that takes into account dispersed excitations caused by incident electromagnetic fields, the fluctuation of the line's electrical parameters in relation to the distance and the dependence of the electrical parameters in relation to the frequency of nonuniform transmission lines.…”

Section: Introductionmentioning

confidence: 98%

“…Aditya Pramana and Munir [2] analyzed the effects of electric resonance phenomena on the voltage between two points of the transmission line. Sánchez-Alegría et al [3] proposed a model that integrates scattered excitations caused by incident electromagnetic fields, fluctuating line electrical parameters for distance, and frequency dependence of electrical parameters. Han and Chen [4]; Hu et al [5] offered boundary element method to model and calculate the power frequency electric field of the 1000kV transmission line.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of Coupled Power Transmission Line: A Systematic Approach

Living

Nnamchi

Mundu

et al. 2023

Preprint

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Transmission models are dominated by lumped models, which describe the time dependence of transmission potentials (temperature, current and voltage). The space counterpart is not incorporated into the lumped model. To fill this gap, the present work proposes a distributed or coupled system of thermal and power equations, which depend on both space and time. The coupled system of equations were developed on the balance of thermal and power fluxes around a control volume representing the transmission lines. The Finite Difference Method is pivoted on the Crank Nicolson technique is used to solve the coupled system of equations. Transmission percentage losses ranged from 0.03 to 0.06%, which is consistent with the 5% recommended by the American Transmission Company. In addition, the simulated model results corresponded to field data obtained from the Uganda Electricity Transmission Company Limited (UETCL) on the Bujjagali - Kawanda transmission line. The coupled model system is useful for the simulation and estimation of the power losses in transmission lines respectively and could be implemented in other transmission lines.

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