Transient Responses of Overhead Cables Due to Mode Transition in High Frequencies

Xue, Haoyan; Ametani, Akihiro; Mahseredjian, Jean; Baba, Yoshihiro; Rachidi, Farhad; Koçar, Ilhan

doi:10.1109/temc.2017.2737439

Cited by 30 publications

(9 citation statements)

References 34 publications

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“…Figures 1–3 show an example of numerical instability observed in very fast transient (VFT) simulation [62] by existing EMTPs in which Carson's earth‐return impedance and space admittance have been implemented [1–8]. Figure 1 illustrates a model circuit for a VFT simulation by EMTPs.…”

Section: Line and Cable Parameters And Line Models In Emtpmentioning

confidence: 99%

Electromagnetic Transients Program: History and Future

Ametani

2020

IEEJ Transactions Elec Engng

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This paper describes the background of Electromagnetic Transients Program (EMTP) and reviews original EMTP development at Bonneville Power Administration of the US Department of Energy starting from 1966 to 1984. Then, the paper briefly explains the development and present situation of four EMTPs, that is, ATP‐EMTP, EMTP‐RV (now EMTP®), EMTDC/PSCAD and XTAP. In addition, the line/cable parameters and the modeling methods prepared in EMTPs are described, and related problems are explained. Finally, the recent trend and future of electromagnetic transient simulations are discussed. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Section: Line and Cable Parameters And Line Models In Emtpmentioning

confidence: 99%

Electromagnetic Transients Program: History and Future

Ametani

2020

IEEJ Transactions Elec Engng

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“…Distributed line models should account for frequency-dependent behaviour, which is evident across the VFT frequency range. However, existing frequency-dependent line models available in alternative transients program-electromagnetic transients program (ATP-EMTP) [3] have proven to be numerically unstable at very high frequencies [4]. New methods reported in [5], adopt a modified transmission line approximation, due to the possible mode conversion for waves propagating over a lossy ground from transverse electromagnetic (TEM) mode to surface wave propagation in the VFT frequency range, which are subject to lower attenuation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Very Fast Transients Using Black Box Macromodels in ATP-EMTP

et al. 2020

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Modelling for very fast transients (VFTs) requires good knowledge of the behaviour of gas insulated substation (GIS) components when subjected to high frequencies. Modelling usually takes the form of circuit-based insulation coordination type studies, in an effort to determine the maximum overvoltages and waveshapes present around the system. At very high frequencies, standard transmission line modelling assumptions may not be valid. Therefore, the approach to modelling of these transients must be re-evaluated. In this work, the high frequency finite element analysis (FEA) was used to enhance circuit-based models, allowing direct computation of parameters from geometric and material characteristics. Equivalent models that replicate a finite element model’s frequency response for bus-spacer and 90° elbow components were incorporated in alternative transients program-electromagnetic transients program (ATP-EMTP) using a pole-residue equivalent circuit derived following rational fitting using the well-established and robust method of vector fitting (VF). A large model order is often required to represent this frequency dependent behaviour through admittance matrices, leading to increased computational burden. Moreover, while highly accurate models can be derived, the data extracted from finite element solutions can be non-passive, leading to instability when included in time domain simulations. A simple method of improved stability for FEA derived responses along with a method for identification of a minimum required model order for stability of transient simulations is proposed.

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“…20]. And may researchers have calculated and simulated the electromagnetic problem [21][22][23]. In this paper we have used the finite element method to determine the radiation and the coupling between its interconnection tracks in order to integrate all the line fields surrounding an interconnect line.…”

Section: Introductionmentioning

confidence: 99%

Investigation on EM radiations from interconnects in integrated circuits

2020

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Characterization and estimation of interconnections behavior in integrated circuits design before the implementation phase is of paramount importance. This behavior seen as microstrip antennas gets complex as the internal signal (square or sine waves) frequencies increase. Thus, they become the preferred path for the propagation of electromagnetic disturbances. In this work we have worked out the numerical modeling of the electromagnetic interactions characterizing the electromagnetic compatibility in the microstrip transmission lines. The effect of these electromagnetic interactions in different structures topologies are studied through the analysis of the influence of the supply signals frequency and structures. The spacing between transmission line tracks and the number of tracks superposition is modeled. The evolution and variation of the scheme parameters in the frequency domain are determined. The transmission lines are considered parallel of equal spacing and superposed tracks of equal spacing and thickness. The capacitance and inductance matrices are computed and discussed. The results are found to comply with current research outcomes.

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Transient Responses of Overhead Cables Due to Mode Transition in High Frequencies

Cited by 30 publications

References 34 publications

Electromagnetic Transients Program: History and Future

Electromagnetic Transients Program: History and Future

Analysis of Very Fast Transients Using Black Box Macromodels in ATP-EMTP

Investigation on EM radiations from interconnects in integrated circuits

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