Electromagnetic Spectrum of the Corona Discharge and Their Fundamental Frequency

Santos, Luis E. Martínez; Miranda, Roberto Linares y; Espino-Cortés, Fermín P.

doi:10.5772/intechopen.101550

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Species that use magnetic cues are particularly affected by Earth's EMFs generated by power lines [29] and this is the case of many bat species which use EMFs for homing, roosting and foraging [30][31][32]. Power lines generate extremely low-frequency EMFs (50-60 Hz) but also EMFs at higher frequency (mainly between 150 kHz and 30 MHz) when corona discharges occur [33]. EMFs could exert avoidance responses in bats and disrupt foraging behaviour as documented for other mammals [34] and as also observed in bats at the much higher frequencies emitted by radar [35,36] (but see [37]).…”

Section: Introductionmentioning

confidence: 99%

Acoustic activity of bats at power lines correlates with relative humidity: a potential role for corona discharges

et al. 2023

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With the ever-increasing dependency on electric power, electrical grid networks are expanding worldwide. Bats exhibit a wide diversity of foraging and flight behaviours, and their sensitivity to anthropogenic stressors suggests this group is very likely to be affected by power lines in a myriad of ways. Yet the effects of power lines on bats remains unknown. Here we assessed the responses of insectivorous bats to very high voltage power lines (VHVPL; greater than 220 kV). We implemented a paired sampling design and monitored bats acoustically at 25 pairs, one pair consisting of one forest edge near to VHVPL matched with one control forest edge. Relative humidity mediates the effects of power lines on bats: we detected bat attraction to VHVPL at high relative humidity levels and avoidance of VHVPL by bats at low relative humidity levels. We argue that the former could be explained by insect attraction to the light emitted by VHVPL owing to corona discharges while the latter may be owing to the physical presence of pylons/cables at foraging height and/or because of electromagnetic fields. Our work highlights the response of bats to power lines at foraging habitats, providing new insight into the interactions between power lines and biodiversity.

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Section: Introductionmentioning

confidence: 99%

Acoustic activity of bats at power lines correlates with relative humidity: a potential role for corona discharges

et al. 2023

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Novel Antenna for Partial Discharge Detection and Classification: A Convolutional Neural Network-Based Deep Learning Approach

Darwish,

Refaat,

Abu-Rub

et al. 2024

IEEE Trans. Dielect. Electr. Insul.

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Driving voltage frequency and electrode material effects on electromagnetic radiation of the surface dielectric barrier discharge in the air

Pekárek

2024

Eur. Phys. J. D

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The electrical discharges are, among others, accompanied by the emission of electromagnetic waves of various frequencies. We studied this emission for the surface dielectric barrier discharge in the air. We used the discharge with one strip-driven electrode and a sinusoidal driving voltage of frequencies 5 and 10 kHz. From the spectra of emitted waves in the frequency band up to 3 GHz, we found that this type of discharge emits the radiation of frequencies below 500 MHz. In this frequency band, we focused on the effect of the driving voltage frequency and driven electrode material on the spectra of these waves. It was found that emitted radiation is distributed in several packages of frequencies, and an increase in the driving voltage frequency or voltage increases the power level of emitted radiation. Compared with the radiation spectrum of the discharge with an aluminium-driven electrode in the spectrum of the discharge with the copper-driven electrode, new peaks of various power levels and the shift of certain radiation frequencies to lower values appear. To understand the underlying mechanism of the discharge electromagnetic waves emission, we focused on the correlation between the electric component of emitted EMWs and the discharge electrical parameters as a function of time and discharge voltage. Graphical abstract

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Electromagnetic Spectrum of the Corona Discharge and Their Fundamental Frequency

Cited by 3 publications

References 16 publications

Acoustic activity of bats at power lines correlates with relative humidity: a potential role for corona discharges

Acoustic activity of bats at power lines correlates with relative humidity: a potential role for corona discharges

Novel Antenna for Partial Discharge Detection and Classification: A Convolutional Neural Network-Based Deep Learning Approach

Driving voltage frequency and electrode material effects on electromagnetic radiation of the surface dielectric barrier discharge in the air

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