Audible Noise and Visual Corona from HV and EHV Transmission Lines and Substation Conductors - Laboratory Tests

Taylor, E. R.; Chartier, V.L.; Rice, D.N.

doi:10.1109/tpas.1969.292356

Cited by 31 publications

(7 citation statements)

References 8 publications

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“…The first comprehensive and systematic study of audible noise (AN) from high voltage lines was apparently done in 1968 ( Taylor, Chartier, Rice, 1969). Overall this investigation followed a similar concept as the present work, albeit with the technical means of its period.…”

Section: Water Dreplets On High Voltage Transmission Lines or Their Mmentioning

confidence: 62%

Origin and abatement of tonal emission from high voltage transmission lines

Teich¹,

Weber²

2002

Elektrotech. Inftech.

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The origin of the Iocally unacceptable and intensive tonal 2f = 100 Hz emission from overhead high voltage lines has been clearly traced by means of multiple diagnostics applied to a model line in the laboratory, Use of a special hydrophilic surface preparation has demonstrated a significant reduction of tonal acoustic noise emission after heavy rain. Ursprung und Verminderung tonaler L#Jrmemission von Hochspannungsleitungen.Der Ursprung ron an manchen Orten unannehmbar ernpfundenen tonalen 2f= 100 Hz Larmemissionen von Hochspannungsleitungen wurde durch Anwendung vielfacher Diagnostikmethoden auf eine Modellanordnung im Labor eindeutig gekl~rt. Bei Anwendung einer speziellen hydrophilen Oberfl~chenbehandlung wurde eine betr~chtliche Reduktion der akustischen Gesamtemission nach schwerem Regen nachgewiesen.

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Section: Water Dreplets On High Voltage Transmission Lines or Their Mmentioning

confidence: 62%

Origin and abatement of tonal emission from high voltage transmission lines

Teich¹,

Weber²

2002

Elektrotech. Inftech.

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“…In practice, the one-third octave frequency spectrum of SPL and the A-weighted SPL which can be calculated through the sound pressure pulse are used in the measurement and evaluation of corona-generated AN [29][30]. The SPL is defined as L p = 20log 10 (…”

Section: Validity Of the Stochastic Model Of The Sound Pressure Pulsesmentioning

confidence: 99%

“…In order to obtain the physical understanding and prediction methods of AC corona-generated AN, many scholars and engineers have conducted theoretical and experimental investigations [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Many empirical formulas for the A-weighted sound pressure level (SPL) and sound power density have been proposed through statistical analysis of longterm measurement results obtained from test lines and corona cage [3][4][5][6][7][8][9][10][11][12][13]. The propagation characteristics of AN from transmission lines were also investigated by using the models of line sound source and point sound source [3,14].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, the AN has become a design factor for transmission lines after the introduction of transmission voltage of 500 kV and above. In order to obtain the physical understanding and prediction methods of AC corona‐generated AN, many scholars and engineers have conducted theoretical and experimental investigations [3–17]. Many empirical formulas for the A‐weighted sound pressure level (SPL) and sound power density have been proposed through statistical analysis of long‐term measurement results obtained from test lines and corona cage [3–13].…”

Section: Introductionmentioning

confidence: 99%

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Statistical analysis of audible noise generated by AC corona discharge from single corona sources

Wang

et al. 2018

High Voltage

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Time-domain waveforms of sound pressure pulses generated by alternate current (AC) corona discharge from single corona sources are measured. The pulse amplitude and time interval of sound pressure pulses in positive and negative half cycles are analysed separately due to large differences of the sound pressure pulses in positive and negative half cycles. The influences of instantaneous voltages on the pulse amplitude and time interval are obtained, and statistical distributions of pulse amplitude and time interval are also obtained. Besides, empirical formulas of the pulse amplitude and time interval are derived by numerical fitting method. Based on the statistical results, stochastic simulation of the sound pressure pulses is conducted, and the validity of the simulated results is given by comparing the frequency-domain results and A-weighted sound pressure level (SPL) with the measured ones. Finally, the stochastic simulation method is used to discuss modulating influence of AC voltage on the tones emission from AC corona discharge. Besides, the influence of the measurement time on the resultant SPL is also discussed on the basis of the stochastic model. In order to insure the SPL independent of the measurement time, the measurement time should be larger than 0.2 s.

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“…The sharp tips formed by the perturbances become the sites for corona discharge. Of considerable engineering interest is the associated undesirable audible noise [68].…”

Section: (22)mentioning

confidence: 99%

Electrohydrodynamics

Melcher¹

1973

Theoretical and Applied Mechanics

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Audible Noise and Visual Corona from HV and EHV Transmission Lines and Substation Conductors - Laboratory Tests

Cited by 31 publications

References 8 publications

Origin and abatement of tonal emission from high voltage transmission lines

Origin and abatement of tonal emission from high voltage transmission lines

Statistical analysis of audible noise generated by AC corona discharge from single corona sources

Electrohydrodynamics

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