Analysis of conductor clashing experiments

Sutlović, Elis; Ramljak, Ivan; Majstrović, Matislav

doi:10.1007/s00202-019-00790-0

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…The combination of high sustained wind speeds and wind gusts could lead to conductor clashing, which, together with hot and dry weather conditions, highly increases the risk of wildfires taking place. The energized power line conductors clashing may cause vaporization and melting of the conductor materials and ejection of the molten metal as small particles [12]. Drop of hot particles due to conductor clashing on dried vegetation or direct contact between conductors and vegetation can potentially ignite wildfires [13]- [15].…”

Section: Introduction a Motivationmentioning

confidence: 99%

Quantifying the Risk of Wildfire Ignition by Power Lines under Extreme Weather Conditions

Bayani¹,

Waseem²,

Manshadi³

et al. 2021

Preprint

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This paper presents a surrogate model to quantify the risk of wildfire ignition by individual power lines under extreme weather conditions. Wind speed and wind gust can lead to conductor clashing, which is a cause of igniting disastrous wildfires. The 3D non-linear vibration equations of power lines are employed to generate a dataset that considers physical, structural, and meteorological parameters, including the span of the power line, conductor diameter, wind speed, wind gust, phase clearance, and wind direction. A set of machine learning models is assembled based on these features to generate a score representing the risk of conductor clashing for each power line within a network, quantifying the risk of wildfire ignition. The rendered score represents the chance of the conductor clashing in place of simulating a Runge-Kutta method. A discussion on the impact of various meteorological parameters on power lines under the energization risk is presented. Besides, it is shown how the presented risk measure can be utilized to weigh in the fire safety and service continuity trade-off.

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Section: Introduction a Motivationmentioning

confidence: 99%

Quantifying the Risk of Wildfire Ignition by Power Lines under Extreme Weather Conditions

Bayani¹,

Waseem²,

Manshadi³

et al. 2021

Preprint

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“…Overhead electric power systems are another frequent ignition source (Mitchell 2013, Collins et al 2016, Keeley and Syphard 2018). Power line ignitions can occur when high winds cause energized wires to swing into one another, creating sparks (Sutlovic et al 2019), windblown debris bridge wires and burst into flame (Ahmad et al 2013), nest material bridge conductors and ignite (Burgio et al 2014), and birds bridge conductors, are electrocuted, and fall to the ground on fire (Guil et al 2017, Dwyer et al 2019, Kolnegari et al 2021, Dwyer and Kolnegari 2021, Fenster et al 2021). Here we focus on the poorly studied occurrence of avian electrocutions as ignition sources for wildland fires.…”

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confidence: 99%

Wildland fires ignited by avian electrocutions

Barnes

Dwyer

Mojica

et al. 2022

Wildlife Society Bulletin

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Uncontrolled wildfires are occurring with increasing frequency across western North America due to a combination of wildfire suppression, climate change, impacts from mountain pine beetles (Dendroctonus ponderosae), alterations in range composition by nonnative grasses, and human population growth in fire-prone landscapes. A poorly studied mechanism of wildland fire ignitions occurs when a bird perched on an overhead power line is electrocuted, its plumage ignites, and the burning bird falls into and ignites dry vegetation. Avian-caused ignitions have been occasionally documented, but not spatially analyzed in the contiguous United States. We hypothesized that spatial analyses could demonstrate specific regions where ignitions from avian electrocutions occur most frequently. To test our hypothesis, we compared public reports of wildland fires ignited by bird electrocutions to Environmental Protection Agency ecoregions.We found reports of 44 wildland fires ignited by avian electrocutions in the contiguous U.S. from January 2014 to December 2018. The Mediterranean California ecoregion had the highest density of avian-caused fires. It would be prudent for electric utilities in the Mediterranean California ecoregion in the U.S., and in fire-prone landscapes globally, to develop fire mitigation plans that include modifying power poles to reduce risk of avian electrocutions and resulting wildfires.

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