A Mathematical Model of Transmission Line Audible Noise Part 1: Background and Model Development

Kirkham, Harold; Gajda, Walter J.

doi:10.1109/tpas.1983.318032

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…In the measurement, the temperature and the relative humidity are 26. 5 and 44%, respectively. It can be found that the waveform of the audible noise is made up of a series of random sound pressure pulses with bipolar property, and as the applied voltages increase, the repetition rate increases significantly.…”

Section: Methodsmentioning

confidence: 93%

“…Accompanied with the corona discharge, several unwanted effects, such as radio interference, audible noise, ionized fields and corona loss, may appear around the transmission lines [1][2][3]. Authors Among these associated problems, the audible noise can be directly perceived by the surrounding people and has become one of decisive factors in the design of HVDC and HVAC transmission lines since the operation of transmission voltages of 500kV and above [4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Time-domain and frequency-domain characteristics of audible noise from single corona source

Cui

et al. 2014

2014 International Conference on Power System Technology

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In this paper, the time-domain measurement method for audible noise is employed to study the time and frequency domains characteristics of audible noise generated by single corona discharge under DC and AC voltage in a coaxial geometry. The results show that in time-domain the audible noise from positive and negative corona discharge both consist of a series of random sound pressure pulses and the amplitudes of sound pressure pulses from positive corona discharge are larger than those from negative corona discharge. As for the audible noise from AC corona discharge in the test, it has a periodic component with a 50Hz fundamental frequency accompanied by sound pressure pulse trains mainly near the negative peaks of AC voltage. When the applied voltage is further increased, sound pressure pulses may be generated at the positive half-cycle. The asymmetrical waveforms in positive and negative half-cycle of AC voltage may attribute to the influence of the space charges. Besides, the discrete wavelet transform (DWT) is used to analyze the detailed characteristics and the difference of corona-generated noise and the background noise. Furthermore, the frequency-domain characteristics of audible noise from DC and AC corona are analyzed based on the time-domain results. This presented work hopefully will be a useful reference for further theoretical studies of the audible noise caused by corona discharge. IndexTerms-audible noise, time-domain and frequency-domain characteristics, single corona source, AC and DC corona discharge

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Section: Methodsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Time-domain and frequency-domain characteristics of audible noise from single corona source

Cui

et al. 2014

2014 International Conference on Power System Technology

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“…Their results indicated that the acoustic spectrum was related to the streamer frequency of the positive corona, but further explanation was not given in their paper [10]. Up to now, researches on the audible noise have been mainly focused on the frequency characteristics [2,4,[12][13][14][15] and the empirical formulas [16,17]. The studies on the characteristics of corona current in both time and frequency domains have been carried out by many scholars [2,3,4,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

The correlation between audible noise and corona current in time domain caused by single positive corona source on the conductor

Cui

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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Audible noise and corona current are two main DC corona effects, and they may both highly depend on the characteristics of space charges generated during corona discharge. However, relatively little investigation has previously been done on the correlation between them especially in time-domain. In the present work, the timedomain waveforms of audible noise and corona current generated by single positive corona source were recorded simultaneously. Their characteristics were carefully analyzed and found to be closely related. It was found that both the audible noise and the corona current consisted of repetitive pulses, and one-to-one relationship in time could be observed and confirmed between them. Furthermore, a linear correlation between the peak-to-peak values of audible noise pulses and the amplitude of corona current pulses was obtained. Empirical formulas with the same forms for them were derived to further prove the linear correlation. The close correlation between the audible noise and the corona current was interpreted qualitatively in the presented work and found to be highly related to the generated space charges.

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

Engel

Wszołek

1996

Applied Acoustics

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A Mathematical Model of Transmission Line Audible Noise Part 1: Background and Model Development

Cited by 6 publications

References 15 publications

Time-domain and frequency-domain characteristics of audible noise from single corona source

Time-domain and frequency-domain characteristics of audible noise from single corona source

The correlation between audible noise and corona current in time domain caused by single positive corona source on the conductor

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

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