Effect of High Altitude on High Voltage AC Transmission Line Corona Phenomena

Chartier, V.L.; Lee, L. Y.; Dickson, LeRoy D.; Martin, Ken

doi:10.1109/tpwrd.1987.4308094

Cited by 39 publications

(15 citation statements)

References 15 publications

(3 reference statements)

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“…Energies 2017, 10, 1055 2 of 10 station located at an altitude of 1953 m near a double-circuit 500-kV line [9]. By comparing the results of this test with those from another station at an altitude of 277 m located near a 500-kV line with similar design, the AN correction factor under rainy conditions was found to be 1 dB/300 m. Between 1985 and 1986, the Ente Nazionale per L'Energia Elettrica (ENEL, Italy) and Eskom (South Africa) cooperated to study the influence of altitude on HVAC corona noise.…”

Section: Facility and Experimental Setupmentioning

confidence: 99%

“…From [9], the AN altitude correction function recommended by BPA for HVAC transmission lines is given as follows:…”

Section: Measured An Correction Factormentioning

confidence: 99%

“…x Δ (9) where x is the altitude, m; and Δ is the AN correction value, dB (A). From Figure 8, it can be observed that Equation (9) is more accurate and in line with the practical situation.…”

Section: = 1000mentioning

confidence: 99%

“…AN performance is a crucial factor for the design of overhead line conductors [6][7][8]. From [9], it can be observed that, in many cases, the selection of conductors for Bonneville Power Administration (BPA, USA) high-voltage lines is based on AN performance. Therefore, investigating the influence of altitude on AN levels is critical.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Altitude on the Audible Noise Level of AC Power lines

Wan

Lan

et al. 2017

Energies

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Abstract:The audible noise (AN) induced by corona discharge of AC transmission lines is more severe at high altitudes than at low altitudes; this has become a crucial limiting factor for the structural design of power lines and their environmental impact assessment. To determine the altitude effect and correction of AN level for AC power lines, a corona cage test system was used to measure the acoustic power level of four bundled conductors at five elevations, namely Wuhan (23 m), Tianshui (1100 m), Xining (2261 m), Gonghe (2943 m), and Yangbajain (4300 m). We obtained the AN characteristics for different altitudes, bundle numbers, and subconductor diameters through a statistical analysis of measured data. The analysis and comparison results indicate that the actual AN correction values are slightly less than the Bonneville Power Administration term of 1 dB/300 m at altitudes below 3200 m. Above 3200 m, the difference increases gradually. A correction term 2.85 dB/1000 m is recommended for more accurate evaluation.

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Section: Facility and Experimental Setupmentioning

confidence: 99%

“…From [9], the AN altitude correction function recommended by BPA for HVAC transmission lines is given as follows:…”

Section: Measured An Correction Factormentioning

confidence: 99%

Section: = 1000mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Altitude on the Audible Noise Level of AC Power lines

Wan

Lan

et al. 2017

Energies

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“…High altitude is one of the most important problems faced in designing, building, and operating these power transmission lines. In high altitude areas, especially in the Qinghai-Tibet plateau, corona and its related electromagnetic environment problems may become more serious as the air pressure becomes lower [1]. Corona inception voltage is an essential and fundamental parameter in the design of power transmission lines.…”

Section: Introductionmentioning

confidence: 99%

High Altitude Effect on Corona Inception Voltages of DC Power Transmission Conductors Based on the Mobile Corona Cage

Bian

Wang

Liu

et al. 2013

IEEE Trans. Power Delivery

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In order to investigate the high altitude effect on dc corona inception voltage of power transmission lines, a mobile corona cage test system was constructed. The experiments were carried in Wuhan, Xining, Geermu, and Nachitai, respectively. Photons released as a result of corona discharge on the conductors were detected by the ultraviolet image detector. Both positive and negative corona inception voltages could be acquired by the "tangent method" based on the measured data. The approximate linear altitude correction formulas were suggested.

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