Proposal of EMTP Surge Analysis Model for a Power Cable through a Transmission Tower

Oshiro, Ryoji; Shiozuka, Taishi; Harada, Shigemi; Kaneko, Eiji; Inoue, Yoshino; Kurata, Tomoshige; Yokokura, K.

doi:10.1541/ieejpes.138.791

Cited by 2 publications

(2 citation statements)

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“…Circuit models were proposed to represent various conductor arrangements, such as parallel multi‐line systems and pipe‐type conductors, 7–9 but there is no sufficient research on wiring at nearby building structures of different diameters. As a result, no models have been established for overvoltage between building structures and nearby wiring, and high‐accuracy analysis of entire building structures remains difficult.…”

Section: Forewordmentioning

confidence: 99%

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A circuit model of electrical wiring nearby building structure for lightning surge analysis

Dei,

Ikeda,

Nagaoka

2023

Electrical Engineering Japan

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A model expressing beams, pillars, and electrical wiring in a building for lightning surge simulation by circuit analysis method is proposed in this paper. The proposed model expresses the self‐surge impedance of the electrical wiring as a function of the distance between conductors and the radius of the electrical wiring. The mutual impedance is expressed by the distance between the surfaces of a structure and a nearby wire instead of the distance between the conductor centers. In the case of two conductors having far different radii in proximity, the distribution of electromagnetic fields around the two conductors is similar in horizontal and vertical arrangements. Thus, the electrical wiring nearby pillars can be treated as a horizontal conductor. The circuit analysis results show that the voltage difference generated between the structure and the electrical wiring is calculated more precisely by the proposed model than by the conventional model.

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Section: Forewordmentioning

confidence: 99%

“…In Equation (9), equivalent height is defined as the height of a vertical conductor multiplied by α = 0.74; therefore, the distance D v between actual Conductor 1 and Conductor 2 image, and the distance d v between actual conductors are as follows:…”

Section: Proposal Of Vertical Structure-wire Modelmentioning

confidence: 99%