Corona-Loss Characteristics of EHV Transmission Lines Based on Project EHV Research

Anderson, John G.; Baretsky, M.; MacCarthy, D. D.

doi:10.1109/tpas.1966.291639

Cited by 16 publications

(2 citation statements)

References 7 publications

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“…Based on the corona loss data of the EHV experimental base , combined with the hourly meteorological records of the US Meteorological Administration in the past 10 years, Ref. obtained the curve of corona loss on designated lines in various climates through computer simulation.…”

Section: Analysis Of Examplesmentioning

confidence: 99%

Calculation method of corona loss in EHV/UHV system based on distributed parameter characteristic

Pan

Chen

2018

IEEJ Transactions Elec Engng

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For the calculation of corona loss of extra-/ultra-high voltage (EHV/UHV) transmission lines, especially the estimation of realtime corona loss, there exists no accurate method. In this paper, a calculation method of corona loss in the EHV/UHV system based on a distributed parameter characteristic is proposed. Based on the π -shaped equivalent circuit of the long-line distributed parameter characteristic, and considering the voltage distribution along the line, a formula for calculating the corona loss under a variety of weather and annual average conditions is derived and the power equation for the corona loss of EHV/UHV system is established by the method. The example results show that the method is quite accurate. The calculation method of this paper can consider different weather conditions of the line sections to calculate the corona loss. It is more in line with the actual weather conditions on the surface of the EHV/UHV transmission lines. And the method can analyze the corona loss and its proportion to the total loss of the system under the annual average and different weather conditions. It is of great significance to the design and operation of an EHV/UHV system.

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Section: Analysis Of Examplesmentioning

confidence: 99%

Calculation method of corona loss in EHV/UHV system based on distributed parameter characteristic

Pan

Chen

2018

IEEJ Transactions Elec Engng

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“…It can also cause audible noise, electromagnetic interference including radio interference, television interference, and a decreased corona onset voltage. All these consequences should be minimised because of energy losses and environmental health issues [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Electrical characteristics of an energised conductor under various weather conditions

2017

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When a transmission line is subjected to adverse weather conditions, rain drops or ice can be formed on its surface, leading to discharge phenomena known as corona. The corona discharge increases corona loss, leakage conductance, and capacitance, the latter two effects facilitating harmonic conditions and power quality degradation. This study investigates the electrical characteristics of an energised conductor under rain, rime, and glaze ice conditions. The experiments were carried out in a climate room using a corona cage. It was found that the leakage conductance of a corona-cage configuration was at its highest under glaze ice condition and at its lowest under rime condition for the same background surface electric field. With the presence of icicles, the change in capacitance under glaze ice accretion was complex. From the experimental results, it can be concluded that the corona-cage configuration is mainly characterised by its capacitive nature before the corona onset. When the corona discharge occurs, the corona cage exhibits a resistive-capacitive nature. With the increase of applied voltage, the configuration becomes more resistive.

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Optimal voltage profiles in transmission networks taking into account the phenomenon of corona

Muzdeka

Rajaković

1983

Electric Power Systems Research

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Corona-Loss Characteristics of EHV Transmission Lines Based on Project EHV Research

Cited by 16 publications

References 7 publications

Calculation method of corona loss in EHV/UHV system based on distributed parameter characteristic

Calculation method of corona loss in EHV/UHV system based on distributed parameter characteristic

Electrical characteristics of an energised conductor under various weather conditions

Optimal voltage profiles in transmission networks taking into account the phenomenon of corona

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