Tower modeling for lightning analysis of overhead transmission lines

Martinez, J.A.; Castro‐Aranda, Ferley

doi:10.1109/pes.2005.1489355

Cited by 29 publications

(25 citation statements)

References 16 publications

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“…For the lightning related studies, the tower footing impedance conventionally is modelled by a simple nonlinear resistance in which the soil ionization is a function of the instantaneous current flows through the tower footing [4,5,[15][16][17]. In this modeling, the frequency dependence behavior of the soil electrical parameters is ignored [18]- [20].…”

Section: Tower Footing Impedancementioning

confidence: 99%

Probabilistic Assessment of Lightning Related Risk of Transmission Lines Based on Frequency Dependent Modeling of Tower-Footing Grounding System

Gholinejhad¹,

Shariatinasab²,

Sheshyekani³

2018

AEM

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This paper presents a probabilistic evaluation, based on Monte-Carlo method, for the estimation of insulation risk of failure of overhead transmission lines (TLs). The proposed method takes into account the wide-band model of towerfooting grounding system. The wide-band model of grounding system in frequency domain is obtained by the method of moment solution to the governing electrical field integral equations. The electrical parameters of soil are considered to be either constant or frequency dependent. The time-domain representation of the grounding system is inferred through pole-zero characterization of its associated frequency response. The case of a typical 400-kV transmission line is modelled in EMTP_RV with the towerfooting grounding system integrated with the transmission line (TL) system. The results of the paper show that the failure risk of transmission lines is affected by the grounding system model. This effect is more pronounced when the soil electrical parameters are assumed to be frequency dependent.

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Section: Tower Footing Impedancementioning

confidence: 99%

Probabilistic Assessment of Lightning Related Risk of Transmission Lines Based on Frequency Dependent Modeling of Tower-Footing Grounding System

Gholinejhad¹,

Shariatinasab²,

Sheshyekani³

2018

AEM

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“…3. Several models have been proposed to represent transmission line towers; they have been developed using a theoretical approach or based on an experimental work [16]. The simplest representation is a lossless distributedparameter transmission line, characterized by a surge impedance and a travel time.…”

Section: Modeling For Lightning Overvoltage Calculationsmentioning

confidence: 99%

“…• The towers are represented by means of the so-called multistory model presented in [26]. See also [16] and [17] for more details. • Only single-stroke negative-polarity flashes are considered.…”

Section: Line and Lightning Stroke Parametersmentioning

confidence: 99%

Lightning performance analysis of transmission lines using the Monte Carlo method and parallel computing

Martínez-Velasco

Corea‐Araujo

Bedoui

2018

Ingeniare. Rev. chil. ing.

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An accurate calculation of lightning overvoltages is crucial for the design of overhead lines. Given the random nature of the lightning phenomenon, the procedure to be used must be statistical and generally based on the Monte Carlo method. Several simulation tools have been used to date for estimating the lightning performance of transmission lines. Some popular approaches use an EMTP-like tool. This type of approach has some drawbacks: the line must be represented using a complex and sophisticated model, and the application of a Monte Carlo method requires a high number of runs. A solution to this problem is the usage of a parallel computing environment, which can reduce the simulation time in a ratio close to the number of cores used in calculations. This paper presents a summary of the effort made by the authors for the development of a Monte Carlo procedure aimed at estimating the lightning performance of transmission lines by means of an EMTP-like tool and the use of a multicore installation, in which the EMTP is controlled from a custom-made application implemented in MATLAB.

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“…This model can suffice for lines with towers shorter than 30 m [1]. See [21] for a discussion on tower models.…”

Section: Modeling Guidelines For Lightning Overvoltage Calculationsmentioning

confidence: 99%

Modeling of Overhead Transmission Lines for Lightning Overvoltage Calculations

Martínez-Velasco

Castro‐Aranda

2010

Ingeniare. Rev. chil. ing.

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Un modelo de línea aérea de transmisión adecuado para el cálculo de sobretensiones originadas por el rayo debe incluir varias partes de la línea: conductores de fase y cables de guarda, torres, puestas a tierra, cadenas de aisladores y distancias en el aire. Un componente adicional, el pararrayos, puede ser necesario si el estudio tiene como objetivo evaluar el comportamiento frente al rayo de una línea de transmisión protegida mediante pararrayos. Este último aspecto es importante ya que el modelo a utilizar puede variar según se hayan instalado o no pararrayos para proteger la línea. El rayo es un fenómeno físico de naturaleza aleatoria. El cálculo de la tasa de contorneos (flameos) causados por descargas atmosféricas ha de realizarse teniendo en cuenta este aspecto, así como el comportamiento aleatorio que pueden tener algunos componentes de la línea aérea; por el ejemplo, las cadenas de aisladores. El objetivo de este artículo es doble: por un lado, se analizan las directrices propuestas hasta la fecha para representar líneas aéreas de transmisión en el estudio de sobretensiones atmosféricas y, por otro, se propone una metodología para seleccionar el modelo más adecuado de línea aérea de transmisión cuando se utilice una herramienta de simulación en el dominio del tiempo; por ejemplo, un programa tipo EMTP. Esta metodología es aplicada a un caso concreto de línea aérea de transmisión.

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Tower modeling for lightning analysis of overhead transmission lines

Cited by 29 publications

References 16 publications

Probabilistic Assessment of Lightning Related Risk of Transmission Lines Based on Frequency Dependent Modeling of Tower-Footing Grounding System

Probabilistic Assessment of Lightning Related Risk of Transmission Lines Based on Frequency Dependent Modeling of Tower-Footing Grounding System

Lightning performance analysis of transmission lines using the Monte Carlo method and parallel computing

Modeling of Overhead Transmission Lines for Lightning Overvoltage Calculations

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