Protection of distribution overhead power lines against direct lightning strokes by means of underbuilt ground wires

Stracqualursi, Erika; Araneo, Rodolfo; Faria, José de Assis Fonseca; Andreotti, Amedeo

doi:10.1016/j.epsr.2021.107571

Cited by 14 publications

(6 citation statements)

References 40 publications

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“…An approximation is made, computing the tower transient impedance as the ratio of the voltage at the tower peak over the current I T . With reference to a lightning current with rectangular waveshape, the tower characteristic impedance is approximated to the value assumed by (7) at time t = 2h T /c 0 :…”

Section: Wagner and Hileman Modelmentioning

confidence: 99%

“…In [43], it is shown that ( 11) is consistent with expression (8) proposed by Wagner and Hileman. In fact, (11) can be retrieved by application of the Duhamel's integral to compute the response of the tower to a ramp current, assuming its known indicial response to be expressed by (7).…”

Section: Sargent and Darveniza Modelmentioning

confidence: 99%

“…External overvoltages occur under lightning discharges, while internal overvoltages are caused by faults and switching operations. For high-voltage (HV) transmission systems, direct strikes to ground wires, towers, or power conductors play a dominant role [7][8][9][10], while, at lower voltages, induced lightning overvoltages may also become a threat [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Tower Models for Power Systems Transients: A Review

et al. 2022

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Fast-front transients play an important role in the insulation design of any power system. When a stroke hits the shield wire or the tower of high-voltage overhead power lines, flashover may occur either along the span or across tower insulators, depending on the relevant voltages and insulation strength. As a result, backflashover may take place from the tower structure to the phase conductor whenever a huge impulse current flows along the tower towards considerably high footing impedances. For these reasons, tower modeling for transients studies is an important step in the insulation design, and also for lower voltage applications, where indirect lightning effects may play a predominant role. However, after decades of research on tower modeling, starting from the 1930s with the first model proposed by Jordan, no consensus has been reached neither on a widely accepted tower model nor on the quantitative effect of the tower models on insulation design. Moreover, the fundamental mechanisms at the base of the transient response of towers and the definition of some fundamental parameters have not been totally clarified yet. The aim of this review is to present the available tower models developed through the years in the power community, focussing mainly on lumped/distributed circuit models, and to help the reader to obtain a deeper understanding of them.

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Section: Wagner and Hileman Modelmentioning

confidence: 99%

Section: Sargent and Darveniza Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tower Models for Power Systems Transients: A Review

et al. 2022

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“…Lightning is a natural transient weather phenomenon with high voltage, high current and strong electromagnetic radiation in nature, and it is also one of the more common natural disasters. It has become the primary factor of distribution line tripping and seriously affects the safe and stable operation of DMS 3 . The formation of line lightning damage is mainly caused by the flashover of line insulation under the action of lightning overvoltage.…”

Section: Introductionmentioning

confidence: 99%

“…With the continuous expansion of DMS capacity and a large quantity of equipment, it is more and more difficult to monitor the real-time operation status of distribution lines. Even under certain conditions, detection requires a lot of manpower, and power supply units are overwhelmed, and some line equipment is installed in places that are difficult for maintenance personnel to reach, so real-time data cannot be obtained 7 . In this case, the contradiction between the operation state of distribution lines and the unknowability of potential faults and the safe and stable operation of large DMSs is becoming increasingly prominent 8 .…”

Section: Introductionmentioning

confidence: 99%

Design of lightning monitoring and fault identification algorithm for overhead distribution lines based on Internet of Things

Li,

He,

Xiao

et al. 2023

Seventh International Conference on Mechatronics and Intelligent Robotics (ICMIR 2023)

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As an important part of the (DMS), the operation state of distribution lines is related to the operation safety of the DMS. Lightning is a natural transient weather phenomenon with high voltage, high current and strong electromagnetic radiation in nature, and it is also one of the more common natural disasters, which has become the primary factor of distribution line tripping. In this article, an algorithm for lightning monitoring and fault identification of overhead distribution lines based on the Internet of Things (IOT) is proposed. According to the distribution characteristics of wavelet energy spectrum under different lightning strikes, the response characteristics and fault identification criteria are constructed. The simulation results verify the real-time and reliability of the online monitoring data transmission of the lightning monitoring system for overhead distribution lines. The method in this article can avoid the influence of lightning impact corona and reflected wave at the end of the line on the accuracy of the algorithm by reasonably selecting the judgment threshold and the monitoring point of current traveling wave, which has high practical value. Through the statistical analysis of various monitoring data of the system, the operation and management department of distribution line can grasp the changes of key operation state of the line in time and lay a solid foundation for the condition maintenance of distribution line.

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Study on Thermal Stability of OPGW in Distribution Line During Lightning Striking and Grounding Short Circuit Faults

Qu,

Liao,

et al. 2024

Lecture Notes in Electrical Engineering

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Protection of distribution overhead power lines against direct lightning strokes by means of underbuilt ground wires

Cited by 14 publications

References 40 publications

Tower Models for Power Systems Transients: A Review

Tower Models for Power Systems Transients: A Review

Design of lightning monitoring and fault identification algorithm for overhead distribution lines based on Internet of Things

Study on Thermal Stability of OPGW in Distribution Line During Lightning Striking and Grounding Short Circuit Faults

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