Review of measures to improve the lightning performance of transmission lines

The 150 kV Koto Panjang â€“ Payakumbuh transmission line has a line length of 86 km with 249 towers, and the occurrence of the back-flashover in their transmission line is 74%, indicated by the high tower footing resistance as that is >3 ohms. The type of rock on the transmission line and the location of the towers, 79% in hilly or mountainous terrains, are among the factors that can cause an increase in the resistance value. The results of this study indicate that the level of back-flashover affects the value of the tower footing resistance by considering the number of electrode installations. When the towers were installed with more electrodes, the value of tower footing resistance, back-flashover level, and insulator voltage could be reduced to less than half of the previous ones. Moreover, the occurrence of the back-flashover rate in each tower can be dropped to â‰¤ 1 back-flashover rate of 100-km/year. Each tower's soil resistivity value has grown, yet fewer back-flashover disruptions exist. The span's length causes this, as the shorter the span, the faster the reflected wave will travel. As a result, it can lower the voltage in the insulator and diminish the likelihood that a flashover would occur.

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“…The formula below can be used to determine how adding electrodes will affect the soil resistance value [21], [22], [23], [29]:…”

Section: Grounding Resistancementioning

confidence: 99%

“…A model of multiple parts is utilized to offer a concise summary of the EMTP-ATP model that was specifically employed for this paper [22], [23], [25]- [33]:…”

Section: Electromagnetic Transients Program (Emtp)mentioning

confidence: 99%

An Optimal Design of Grounding System for Tower Footings in Payakumbuh 150 kV Transmission Line of Koto Panjang

Warmi¹,

Zulkarnaini²,

Rajab³

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…Thunder and lightning are two of the main causes of a line fault. Lightning has extremely high voltage and current, and once it hits the transmission line, it may lead to serious consequences such as insulator flashover, wire, and lightning protection line burning, resulting in line tripping and power failure [1]. Therefore, enhancing the lightning resistance of transmission lines is critical to ensuring the power system's safety and stability.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of Lightning Protection Level Against Backflash for 220 kV Transmission Lines

Ma,

Sun,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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Lightning strikes are a major cause of insulator flashover and line tripping; hence, improving line lightning resistance is essential. This article establishes a 220 kV transmission line model in PSCAD/EMTDC and examines the effect of alternative grounding resistance and phase arrester configurations on lightning resistance levels. The analytical findings demonstrate that the transmission line’s lightning resistance level is inversely connected with its ground resistance. When ground resistance cannot be lowered, lightning resistance can be improved by adding a lightning arrester. The lightning resistance level of each arrester arrangement varies depending on the ground resistance circumstances. An appropriate configuration policy must be picked depending on the site characteristics. The study results in this research give a specific reference for lightning protection transformation of 220 kV transmission lines.

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The effect of sandy soil porosity on lightning overvoltages of overhead 138 kV transmission line

Azevedo

Araújo

Filho

2023

Electric Power Systems Research

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Review of measures to improve the lightning performance of transmission lines

Cited by 10 publications

References 16 publications

An Optimal Design of Grounding System for Tower Footings in Payakumbuh 150 kV Transmission Line of Koto Panjang

An Optimal Design of Grounding System for Tower Footings in Payakumbuh 150 kV Transmission Line of Koto Panjang

Analysis and Optimization of Lightning Protection Level Against Backflash for 220 kV Transmission Lines

The effect of sandy soil porosity on lightning overvoltages of overhead 138 kV transmission line

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