Corona and field effects experience on an operating utility six-phase transmission line

Stewart, James R.; Oppel, L.J.; Richeda, R.J.

doi:10.1109/61.714509

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…e o is the permittivity of free space. r is the unit vector in the direction of r. The above expression for the electric field intensity E can be developed in Cartesian coordinates as: (2) where:…”

Section: Methods Of Calculationmentioning

confidence: 99%

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A Comparative Study of Electric Fields beneath Compact and Non-Compact Transmission Lines

Dahab

Elhaija

Amoura

2007

The International Journal of Electrical Engineering & Educa

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This paper presents the charge simulation method (CSM) with complex charges for the computation of electric field distribution under Extra High Voltage (EHV) transmission lines (conventional and compact). Electric field at ground level is becoming one of the most important factors for proper design and safe operation of EHV lines because of its biological effects. The ground is taken into account by the method of images. A single tower transmission line carrying a single circuit with six different configurations is studied and analysed. All the cases have the same degree of compaction (i.e. the ratio of line-to-line voltage/space between the two phases is constant) for the purpose of comparison. It is found that the electric field is reduced by 30-70% for some of the compact designs compared with conventional ones.

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Section: Methods Of Calculationmentioning

confidence: 99%

“…[1][2][3][4][5][6][7] These studies have simulated the conductors by infinitely long line charges. The ground is represented by a conducting plane.…”

mentioning

confidence: 99%

A Comparative Study of Electric Fields beneath Compact and Non-Compact Transmission Lines

Dahab

Elhaija

Amoura

2007

The International Journal of Electrical Engineering & Educa

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“…Up to now, previous research was chiefly concentrated on the theoretical predetermination model [9][10][11][12][13][14], the test and statistical analysis of the radio noise [15][16][17][18][19][20] generated from HVAC and HVDC power transmission lines. However, very little attention has been paid into the long-term operating effects of the conductor surface status on corona-generated radio noise as the research period could hardly be long enough (usually more than 10 years) in the test laboratory [21].…”

Section: Introductionmentioning

confidence: 99%

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

Bian

Wang

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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This paper presents a research of the surface roughness effects on corona-generated electromagnetic interference of long-term operating conductors. The detailed surface morphologies and roughness of typical long-term operating conductors were measured and analyzed. The radio noise measurement system based on the corona cage was discussed and the actual radio noise generated by the conductor in the measured cage was obtained, based on the parameters of the corona cage and the measured data. The radio noise tests were carried out under both dry and wet conditions. Under two types of conditions, the corona intensity was higher on the long-term operating conductors contrasted to the new conductors as a result of the anomalistic surfaces of the long-term operating conductors. The rate of decrease of corona inception voltages between the long-term operating conductors and new conductors was discovered to increase with the raise of surface roughness degree R a in linear relationship. Approximate linear relation was also discovered between the averaged radio noise deviation and R a . The rate of decrease of corona inception voltages under wet conditions was slightly higher (about 1%) than that under dry conditions. The difference between the radio noise of long-term operating conductors and that of new conductors was larger (1.3 dB) under wet conditions compared to dry conditions.

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“…Therefore, it is important to know the electric field distribution near fence also. Some authors have provided the calculation methods and values of the electric and magnetic fields, corona losses [4]- [10]. It is clear from the results that electric field could have greater values at the high voltage power lines.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Electric Field of Metallic Fence under a High Voltage Transmission Line

Virbalis¹,

Lukočius²,

Marčiulionis³

et al. 2016

ElAEE

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Corona and field effects experience on an operating utility six-phase transmission line

Cited by 17 publications

References 8 publications

A Comparative Study of Electric Fields beneath Compact and Non-Compact Transmission Lines

A Comparative Study of Electric Fields beneath Compact and Non-Compact Transmission Lines

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

Investigation of the Electric Field of Metallic Fence under a High Voltage Transmission Line

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