A Multiresolution Time-Domain Method for LEMP Calculation and Comparison With FDTD

Jiang, Zhi‐Dong; Zhou, Bihua; Liu, Yawen; Yang, Bo

doi:10.1109/temc.2013.2288313

Cited by 6 publications

(1 citation statement)

References 17 publications

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“…Several scientific studies have focused on the reliable prediction of lightning‐generated electromagnetic pulses, as they are important for many electromagnetic (EM) compatibility problems (eg, safety of electronic equipment and protection from electrical interferences) as well as for quality issues in electrical distribution networks. Computations of the induced fields, based primarily on analytical expressions, consisted the dominant solution at the early stages of such investigations, whereas numerical techniques have been applied for similar purposes more extensively in recent years . Analytical approaches are known for their capability to yield fast results, yet their application is considered suitable only in rather simplified setups.…”

Section: Introductionmentioning

confidence: 99%

Investigation of uncertainty in lightning‐produced EM fields with a polynomial‐chaos FDTD approach

Zygiridis

Kantartzis

Tsiboukis

2017

Int J Numerical Modelling

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The aim of this paper is to investigate the impact of the ground-material uncertainty on the properties of electromagnetic fields generated by lightning strikes. Although several analytical as well as numerical approaches have been proposed throughout previous years for the prediction of lightning-induced fields, these are mostly applied within a fully deterministic context, thus overlooking the degree of randomness that the corresponding problems may exhibit. Considering the rotational independence of setups with vertical lightning channels and flat terrains, we propose a stochastic finite-difference time-domain algorithm that takes advantage of the generalized polynomial-chaos theory. The latter enables the representation of random processes via expansions with respect to specific orthogonal polynomials and facilitates capturing the fundamental statistical properties of the produced fields. The resulting scheme preserves the structure of the original Yee algorithm and, although computationally heavier than the latter, is clearly more efficient than conducting brute-force Monte Carlo studies. The potential of the proposed stochastic method is assessed via various numerical results, calculation of statistical metrics, and comparisons with reference solutions. KEYWORDS finite-difference time-domain method, lightning, polynomial chaos, uncertainty Int J Numer Model. 2018;31:e2238.wileyonlinelibrary.com/journal/jnm

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Section: Introductionmentioning

confidence: 99%

Investigation of uncertainty in lightning‐produced EM fields with a polynomial‐chaos FDTD approach

Zygiridis

Kantartzis

Tsiboukis

2017

Int J Numerical Modelling

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The Parameter Estimation of Double Exponential Pulse Based on a Least Infinity Norm Fitting Method

Shi

Wang

Zhu

et al. 2021

J. Phys.: Conf. Ser.

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This paper presents an estimation method of double exponential pulse (DEP) between the physical parameters rise time (t r), full width at half maximum amplitude (t FWHM) and the mathematical parameters α, β. A newly fitting method based on the least infinity norm criterion is proposed to deal with the estimation problem of DEP. The calculation process and equation of parameters of this method is proposed based on an m-th-order polynomial fitting model. This estimation method is compared with the least square method by the same data and fitting function. The results show that the maximum estimation error of parameters of double exponential pulse obtained by the least infinity norm method is 1.5 %.

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Evaluation of Electric Fields Radiated by Lightning Stepped Leaders on Finitely Conductive Ground

Jiang

Zhou

Qiu

et al. 2015

IEEE Trans. Electromagn. Compat.

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A Multiresolution Time-Domain Method for LEMP Calculation and Comparison With FDTD

Cited by 6 publications

References 17 publications

Investigation of uncertainty in lightning‐produced EM fields with a polynomial‐chaos FDTD approach

Investigation of uncertainty in lightning‐produced EM fields with a polynomial‐chaos FDTD approach

The Parameter Estimation of Double Exponential Pulse Based on a Least Infinity Norm Fitting Method

Evaluation of Electric Fields Radiated by Lightning Stepped Leaders on Finitely Conductive Ground

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