Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

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

doi:10.1002/eej.21002

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…These assumptions are also supported by the results of step response calculation by means of the FDTD method presented in [35]. The current wave is assumed to propagate along the pole at the speed of light [36]. The soil ionization and the frequency dependence of the grounding electrode are neglected.…”

Section: Case Study and Overvoltage Calculation Methodsmentioning

confidence: 94%

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

Borghetti

Ishimoto

Napolitano

et al. 2021

IEEE Open J. Power Energy

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In the usual practice, the evaluation of overvoltages due to direct lightning strikes to overhead power lines is focused on the representation of the effects of the lightning current injection, whilst the effects of the coupling between the conductors and the lightning electromagnetic pulse (LEMP) is disregarded. Motivated by recent results obtained for the case of a medium voltage line configuration with a shield wire, this paper extends the analysis to assess the contribution of the LEMP on the lightning performance of an overhead distribution line with and without periodically grounded wires and surge arresters. Moreover, the paper deals with the LEMP effect on the occurrence probability of flashovers on different phases, which is an important information on the service continuity of networks with isolated or compensated neutral earthing. A validation of the results is obtained by comparing the overvoltages calculated by the electromagnetic transient program including the model of the line illuminated by the LEMP and those obtained by a three-dimensional finite difference time-domain approach.Index Terms--distribution line, direct lightning, lightning electro-magnetic pulse, flashover rate, lightning protection NOMENCLATURE i(t) current waveform at the channel base I0, τ1, τ2, η, n Heidler function parameters Ip, tf, Sm, th peak value, equivalent front time, maximum steepness, and time to half value of i(t) v(t) voltage across insulators at time t D(t) value of the flashover model integral at time t V0, t0, k parameters of the integration model DE* flashover value of D Fp annual number of flashovers A, ntot, nd Monte Carlo events: collecting area, total number and number of direct events causing a flashover.

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Section: Case Study and Overvoltage Calculation Methodsmentioning

confidence: 94%

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

Borghetti

Ishimoto

Napolitano

et al. 2021

IEEE Open J. Power Energy

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show abstract

“…Recently, numerical electromagnetic field analysis has been widely used for lightning surge analysis [12]. The accuracy of such analysis has been confirmed by comparison with experiments and measurement [13][14][15][16][17], and one can expect the further spread of numerical techniques. In particular, the FDTD (Finite Difference Time Domain) method [18,19] yields stable solutions obtained by a straightforward algorithm, and thus is popular among researchers.…”

Section: Introductionmentioning

confidence: 99%

A study of lightning current distribution at a wind turbine foot: Influence on current measurements using a Rogowski coil

Yamamoto

Ueda²,

Ametani

et al. 2012

Electrical Engineering Japan

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A Rogowski coil, used for measuring lightning current through a wind turbine generator system, is generally set up at the foot of a tower. In most wind turbines, there is an entrance at the foot of the tower, which leads to a flight of stairs or a ladder. When lightning strikes the wind turbine, the lightning current flows to the ground through the blades, nacelle, and tower. The current is shunted to the tower and the stairs/ladder at the foot of the tower, from where it may flow into the foundation and the earth. A Rogowski coil is usually set up at only the foot of a tower. The lightning current shunted to the stairs/ladder cannot be measured using the Rogowski. The installation position of the Rogowski coil depends on the construction of the stairs/ladder. In this study, the lightning current distribution at the foot of a tower is calculated using the FDTD (Finite Difference Time Domain) method, which is one of the methods used for numerical analyses of electromagnetic fields. We also studied the effect that the setup of the stairs/ladder and the resistivity of the ground have on the lightning current distribution. The results of the current distribution are very important for predicting the total current that flows through an existing wind turbine generator system.

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Research study on the multi-strike energy model and control strategy optimization of controllable arrester

Shu,

Lou,

Tang

et al. 2025

Electric Power Systems Research

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Lightning surge characteristics of an actual distribution line and validation of a distribution line model for lightning overvoltage studies

Cited by 6 publications

References 10 publications

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

Assessment of the Effects of the Electromagnetic Pulse on the Response of Overhead Distribution Lines to Direct Lightning Strikes

A study of lightning current distribution at a wind turbine foot: Influence on current measurements using a Rogowski coil

Research study on the multi-strike energy model and control strategy optimization of controllable arrester

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