Audible noise of transmission lines caused by the corona effect: Analysis, modelling, prediction

Engel, Z.; Wszołek, Tadeusz

doi:10.1016/0003-682x(95)00041-7

Cited by 19 publications

(12 citation statements)

References 4 publications

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“…However, the magnitude of the electric field depends on the voltage, and not the transmission load of the power line, and any effect on animal behaviour should not vary with transmission load. Increased noise from corona at higher transmission load remains a possibility, but overall dry, clear weather during the experimental period made it difficult to test specifically for effects of corona noise, which is related to electrical discharges in moist weather [46,47]. The model selection showed that ambient relative humidity could not explain much of the observed behaviour patterns (Tabels 5-8).…”

Section: Electromagnetic Fields and Noise From The Power Linesmentioning

confidence: 99%

Effects of Power Lines on Area Use and Behaviour of Semi-Domestic Reindeer in Enclosures

Flydal

Korslund

Reimers

et al. 2009

International Journal of Ecology

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We conducted large-scale, replicated experiments to test the effects of two parallel power lines on area use, behaviour, and activity of semidomestic reindeer in enclosures. Yearling female reindeer were released into four 50 × 400 m enclosures; two treatment enclosures with power lines and two control enclosures. Reindeer from two herds, one from Kautokeino (domestic tame) and one from Vågå, (domestic wild) were tested separately and compared. Individual location within the enclosures was not affected by the power lines. Effects on restless behaviour were ambiguous, with slightly more restless behaviour in the treatment enclosures for the domestic tame reindeer, while the domestic wild reindeer maintained a stable level in the treatment enclosures, increasing with time in the control enclosures. Activity changes were slightly more common among animals within treatment enclosures for both herds, with no indication of habituation during the experiment. The domestic wild reindeer had more than three times the amount of restless behaviour than the domestic tame reindeer. Our study indicates that for reindeer in enclosures, the disturbance from a power line construction is negligible. This suggests that power lines are a minor disturbing factor compared to human handling when using fenced in areas like grazing gardens in reindeer husbandry.

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Section: Electromagnetic Fields and Noise From The Power Linesmentioning

confidence: 99%

Effects of Power Lines on Area Use and Behaviour of Semi-Domestic Reindeer in Enclosures

Flydal

Korslund

Reimers

et al. 2009

International Journal of Ecology

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“…1) registered data by means of an all-weather microphone [5] In the authors' previous papers [1,4,6,7], several versions of the feature vector parameters were presented, and the proper selection of the feature space was extensively discussed. Finally, the space has been reduced from 19 to 10 elements [4] and contains:…”

Section: Methodsmentioning

confidence: 99%

Artificial Intelligence and Learning Systems Methods in Supporting Long-Term Acoustic Climate Monitoring

Kłaczyński

Wszołek

2013

Acta Phys. Pol. A

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Developing eective methods for automatic identication of noise sources is currently one of the most important tasks in long-term acoustical climate monitoring of the environment. Manual verication of recorded data, when it comes to proper determination of noise levels, is time-consuming and costly. A possible solution is to use pattern recognition techniques for acoustic signal recorded by a monitoring station. This paper presents usefulness of special directed measurement techniques, acoustic signal processing, and classication methods using articial intelligence (the Sammon mapping) and learning systems methods (Support Vector Machines) in the recognition of corona audible noise from ultra-high voltage AC transmission lines.

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“…Measurements of noise from high voltage transmission lines were performed at a 300 kV and a 420 kV line in Nordmarka, north of Oslo, Norway. Measurements were done during rainy weather at temperatures of 0 -4 °C, weather conditions with high levels of corona noise (Engel & Wszolek, 1996). The sound pressure level (dB re.…”

Section: Methodsmentioning

confidence: 99%

“…Most noises are not stable in intensity over wide frequency bands but vary in amplitude, and the hearing threshold for such noises measured over a continuous spectrum have been reported to be similar to pure tones (Kinsler & Frey, 1962). Since corona noise from power lines does not have a stable intensity over the one-octave frequency bands (Engel & Wszolek, 1996), the hearing threshold for pure tones could be used as an estimate of the hearing threshold for the noise.…”

Section: Methodsmentioning

confidence: 99%

Reindeer (Rangifer tarandus tarandus) perception of noise from power lines

Flydal

Kilde

Enger

et al. 2003

Ran

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There has been concern about possible effects of noise from power lines on reindeer (Rangifer tarandus tarandus) behaviour. Based on recent establishment of the reindeer audiogram and measurements of corona noise from two power lines of 300 kV and 420 kV, we found that reindeer are able to hear noise from power lines at frequencies above 250 Hz. A comparison with the human audiogram shows that humans are better able to perceive noise from power lines than reindeer, at least at the lowest frequencies. By simple comparisons of this kind, the perception of different types of sound by reindeer can be determined. Possible noise disturbances from human activities and constructions can be minimised if the intensity can be reduced for frequencies in the best hearing range of reindeer

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Audible noise of transmission lines caused by the corona effect: Analysis, modelling, prediction

Cited by 19 publications

References 4 publications

Effects of Power Lines on Area Use and Behaviour of Semi-Domestic Reindeer in Enclosures

Effects of Power Lines on Area Use and Behaviour of Semi-Domestic Reindeer in Enclosures

Artificial Intelligence and Learning Systems Methods in Supporting Long-Term Acoustic Climate Monitoring

Reindeer (Rangifer tarandus tarandus) perception of noise from power lines

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