Analysis of distribution lines performance against lightning using ATP-EMTP

Cabral, Roberto J.; Gazzana, Daniel S.; Leborgne, Roberto Chouhy; Bretãs, Arturo S.; Dias, Guilherme A. D.; Tello, Marcos

doi:10.1109/emceurope.2012.6396751

Cited by 15 publications

(9 citation statements)

References 6 publications

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“…In direct lightning strike studies, most researchers use a pre-defined function, such as Heidler function, to simulate the lightning current strike to a transmission line or a wind turbine. They then investigate the propagation of the lightning current wave through power system components [86]- [88]. For a nearby lightning strike, the electromagnetic coupling with the overhead line is computed and the overvoltages due to this coupling are evaluated [89], [90].…”

Section: Atp Modelling Of Tall-structure Lightning Currentmentioning

confidence: 99%

Modelling of tall-structure lightning return-stroke current using the Electromagnetic Transients Program

Emam¹

2021

Preprint

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The main aim of this PhD work is to advance tall-structure lightning return-stroke current modelling. The Alternative Transients Program (ATP), a version of the Electromagnetic Transients program (EMTP), is used to model the lightning current distribution within a tall structure and the attached lightning channel. The tall structure, namely the CN Tower, is modeled as three or five transmission line sections connected in series. The lightning channel is represented by a transmission line with a continuously expanding length. The presented model takes into account reflections within the tower and within the lightning channel. Locations of reflections, current reflection coefficients and the parameters of the current simulation function are calculated based on the time analysis of the current derivative signal, measured at the tower. The decay parameters of the simulation function are first determined by curve fitting the decaying part of the current obtained from measurement. The other parameters are determined by curve fitting the measured initial current derivative impulse with the derivative of the simulation function, before the arrival of reflections. The simulation results substantially succeeded in reproducing the fine structure of the measured current derivative signal. The model allows for the computation of the lightning current at any point along the current path (the tower and the attached channel), which is required for the calculation of the associated electromagnetic field. Using the three-section model of the tower, the presented return-stroke current model enables the determination of a discrete return-stroke velocity profile, demonstrating that the velocity generally decays with time. Furthermore, based on the five-section model, the proposed approach enables taking into account the existence of upward-connecting leaders, which allowed, for the first time, the determination of upward-connecting leader lengths and return-stroke velocity variation profiles with more details. The return-stroke velocity profile is found to initially increase rapidly with time, reaching a peak, and then decrease less rapidly. The proposed model is also experimentally verified based on the comparison between the computed and measured electromagnetic fields. The simulated electric and magnetic field waveforms are found to reproduce important details of the measured fields, including initial split peaks that appear due to channel-front reflections in the presence of upward-connecting leaders.

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Section: Atp Modelling Of Tall-structure Lightning Currentmentioning

confidence: 99%

Modelling of tall-structure lightning return-stroke current using the Electromagnetic Transients Program

Emam¹

2021

Preprint

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“…-Grounding Resistance: An approach to the surge impedance can be made in terms of the grounding static resistance R g. [4], [5]. The grounding resistance R g is modeled by a concentrated resistance (estimated average value for all the poles of the region).…”

Section: Power System Modelled In Atpmentioning

confidence: 99%

“…Thus, this paper presents a comparative lightning performance study conducted on a 23 kV distribution feeders using software ATP-Draw [15]. Preliminary results obtained with this approach have been presented in [4], [5] and [6]. Four different poles configurations were modelled, two are horizontal feeders; and two are vertical feeders.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Assessment of Lightning-Induced Surges in Distribution Feeders Using ATP

Cabral¹,

Bretãs²,

Leborgne³

et al. 2014

12th IET International Conference on Developments in Power System Protection (DPSP 2014)

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“…Nevertheless, the model proposed in this paper presents some differences in comparison with previous models and can be used with distribution lines of any length. In this work, the modeling of the power system components was used according to [12]- [13].…”

Section: Power System Modeled In Atp-drawmentioning

confidence: 99%

Improved distribution feeder topology against lightning

Cabral

Gazzana

Leborgne

et al. 2013

2013 International Symposium on Lightning Protection (XII SIPDA)

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Energy supply is a significant resource for economic and social development. Power systems statistics shows that the lightning phenomenon is one of the most important causes of power systems outage. In this context, the paper present a study of the performance of a 23kV distribution line related to the occurrence of direct lightning in a particular point of the system, with focus in a comparative analysis of different feeders and poles configurations. The analysis is based on the calculation of flashover and backflashover using ATP-Draw version of the EMTP. The differences of the performance between the horizontal and the vertical feeder configurations with grounding system are demonstrated through the comparison of the maximum lightning current withstand by the feeder. Non-linear grounding resistance and variability of the resistivity of the soil were considered. Simulation results show that the configuration with guard-wire can improve the immunity up to 100% related to the maximum lightning current that the feeder withstand.

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Analysis of distribution lines performance against lightning using ATP-EMTP

Cited by 15 publications

References 6 publications

Modelling of tall-structure lightning return-stroke current using the Electromagnetic Transients Program

Modelling of tall-structure lightning return-stroke current using the Electromagnetic Transients Program

Sensitivity Assessment of Lightning-Induced Surges in Distribution Feeders Using ATP

Improved distribution feeder topology against lightning

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