Advanced observations of lightning induced voltage on power distribution lines. II

Yokoyama, Shigeru; Miyake, Kunihiko; Fuki, S.

doi:10.1109/61.35647

Cited by 61 publications

(11 citation statements)

References 13 publications

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“…The induced signals produced by lightning in a circuit has been dealt with in the literature. A large number of experimental recordings have been published by Yokoyama et al [13–15]. They conducted the simultaneous measurement of lightning‐induced voltages with associated stroke currents and revealed the characteristics of the lightning‐induced voltage waveform.…”

Section: Introductionmentioning

confidence: 99%

Prognostic significance of Wilms tumor gene (WT1) mRNA expression in soft tissue sarcoma

Sotobori

Ueda

Oji

et al. 2006

Cancer

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This paper focuses on the voltages electromagnetically induced by the multiple return strokes involved in a triggered lightning on an overhead power line and a vertical signal line of an automatic weather station (AWS), and the backflow currents and residual voltages in a surge protection device (SPD) embedded in the power line. Pulses of voltage on the overhead power line corresponding to the return strokes with the peak currents ranging from −6.67 to −26.47 kA showed bipolar features. Subpeaks and main peaks ranged from 0.99 to 4.47 kV and from −4.98 to −10.31 kV, respectively. The voltage waveforms corresponding to the return strokes on the vertical signal line of wind speed were of two types: with and without a subpeak after the main peak. All the main peaks, with the peak value from −0.41 to −3.10 kV, were ‘V’ shaped. A significant relationship exists between the peak currents of the return strokes and the 10–90% average gradients of the voltages. The peaks of currents through the SPD ranged from −0.22 to −1.64 kA. The durations of residual voltages ranged from 0.6 to 5.9 ms, average value being 2.1 ms. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Introductionmentioning

confidence: 99%

Prognostic significance of Wilms tumor gene (WT1) mRNA expression in soft tissue sarcoma

Sotobori

Ueda

Oji

et al. 2006

Cancer

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“…Frequency distributions of the peak values of lightning-induced voltages have been proposed by Andreotti et al based on computer simulations [14,15]. Experimental studies including measurements of lightning surges on medium and low-voltage lines have been performed in different countries [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. However, the line configuration has a great influence on the lightning-induced voltages [1,2,30,31] and, due to the different lengths, termination conditions, and topologies of the lines, the characteristics of the measured surges are not directly comparable.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of lightning‐induced voltages based on experimental data

Santos

Piantini

2020

High Voltage

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This paper presents an analysis of 64 lightning‐induced voltage waveforms recorded in an experimental system implemented in the campus of the University of São Paulo, Brazil. The voltages were measured on a 10 m high, 2.7 km long un‐energized overhead line consisting of two conductors installed on 6 m crossarms. One of the conductors had surge arresters, while the other one was left unprotected. Strictly speaking, all the recorded voltages on the unprotected conductor were bipolar, but in many cases only one semi‐cycle could be considered important for practical purposes. Different criteria are discussed for the determination of the waveshape parameters, which may differ significantly from those of the standard lightning impulse voltage (1.2/50 μs). Based on the proposed criterion for classifying the induced voltages, unipolar waveforms accounted for 67% of the total and, except for one case, all of them had positive polarity. The median values of the front time and time‐to‐half‐value were, respectively, 5.2 μs and 15.8 μs. Bipolar waveforms were 33% of the total and in approximately 62% of the cases the first semi‐cycle was of positive polarity. In 91% of the cases the voltage peak occurred either in the first or the second semi‐cycle.

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Section: Introductionmentioning

confidence: 99%

Prime time for general endovascular approach to congenital aortic atresia in adults?

Zeller¹

2008

Cathet Cardio Intervent

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Advanced observations of lightning induced voltage on power distribution lines. II

Cited by 61 publications

References 13 publications

Prognostic significance of Wilms tumor gene (WT1) mRNA expression in soft tissue sarcoma

Prognostic significance of Wilms tumor gene (WT1) mRNA expression in soft tissue sarcoma

Characteristics of lightning‐induced voltages based on experimental data

Prime time for general endovascular approach to congenital aortic atresia in adults?

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