実規模配電線雷サージ特性の測定と配電線解析モデルの検証

Matsuura, Sumio; Noda, Taku; Asakawa, Akira; Yokoyama, Shigeru

doi:10.1541/ieejpes.128.1150

Cited by 16 publications

(3 citation statements)

References 12 publications

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“…The R t -L t parallel circuit approximately represents the significant wave attenuation along the distribution pole. The resistance R t was set to 60 Ω following [40]. The inductance L t was set to 300 μH (a time constant of 5 μs for the R t -L t parallel circuit) since the effect of attenuation can be observed in the period around 5 μs or later, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Direct Lightning Surge Analysis of Distribution Lines Considering LEMPs From Lightning Channel and Struck Pole in EMT Simulation

Yamanaka,

Ishimoto,

Tatematsu

2023

IEEE Trans. Electromagn. Compat.

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Direct lightning strikes mainly determine the lightning performance of medium-voltage distribution lines with surge arresters installed at close intervals. Recent studies have shown that in such lines, the effect of a lightning electromagnetic pulse (LEMP) on insulator voltages has a large impact on lightning performance assessment. In this article, we propose an analysis method that can consider the effect of LEMPs radiated from the lightning channel and the struck pole in electromagnetic transient (EMT) analysis. In the proposed method, first, the LEMPs are calculated using potential formulae that are extended to include the presence of the struck pole. Second, the insulator voltages induced by the LEMPs and generated by currents flowing into the struck pole, earth electrode, and shield wire are calculated using a field-to-line coupling formula interfaced with the EMT analysis. The proposed method is validated by comparison with three-dimensional finite-difference time-domain analysis. The proposed method is potentially a powerful tool for statistically assessing the lightning performance of distribution lines while considering LEMP effects.

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Section: Resultsmentioning

confidence: 99%

Direct Lightning Surge Analysis of Distribution Lines Considering LEMPs From Lightning Channel and Struck Pole in EMT Simulation

Yamanaka,

Ishimoto,

Tatematsu

2023

IEEE Trans. Electromagn. Compat.

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“…Note that the value of τ i for caluculating i(t) can be obtained by T f as shown in Ref. (16). The value of i 0 is normalized to 1 A.…”

Section: Distribution Line Configurationmentioning

confidence: 99%

A Simulation Study of Lightning Surge Characteristics of a Distribution Line Using the FDTD Method

et al. 2009

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Senior MemberRecently, numerical electromagnetic field computation methods, which solve Maxwell's equations, have become a practical choice for the lightning surge analysis of power systems. Studies of lightning surge response of a transmission tower and lightning-induced voltages on a distribution line have already been carried out using the numerical electromagnetic field computation methods. However, a direct lightning stroke to a distribution line has not yet been studied.The authors have previously carried out pulse tests using a reduced-scale distribution line model which simulate the direct lightning stroke to a distribution line. In this paper, first, the pulse test results are simulated using the FDTD (Finite Difference Time Domain) method which is one of the numerical electromagnetic field computation methods, and comparisons are shown to validate the application of the FDTD method. Secondly, we present lightning surge characteristics of an actual-scale distribution line obtained by the FDTD method. The FDTD simulation takes into account the following items: (i) detailed structure of the distribution line; (ii) resistivity of the ground soil; (iii) propagation speed of the lightning return stroke.

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“…下を模擬するため，分流位置より下部の電柱モデルのサージインピーダンスを 165 Ω とし，分流位置より上部の電柱モデルのサージインピーダンス 199 Ω との差分の抵抗 34 Ω とインダクタンス 1.30 μH の並列回路を分流位置に挿入する。なお，このインダクタンスの値は，高圧腕金電位を表現する RL 並列回路と同じ手法(18) (19) により算出した。電学論 B，130 巻 2 号，2010 年…”

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