Contribution to the Electrical Design of EHVDC Overhead Lines

Knudsen, Niels; Iliceto, F.

doi:10.1109/tpas.1974.293937

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…This can be also confirmed from Equation (14). The first effort in order to calculate the corona loss in unipolar and bipolar systems was made through experiments in the field, as in [45]. With some modifications for bipolar HVDC transmission lines, the corona loss can be obtained from the following equation [11].…”

Section: 2 Hvdc Corona Lossmentioning

confidence: 99%

Technical and Economic Analysis of an HVDC Transmission System for Renewable Energy Connection in Afghanistan

et al. 2022

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Aged and insufficient domestic power plants and insecure, unreliable and expensive power imports pose significant challenges for the power sector of Afghanistan. On the other hand, due to the absence of a suitable transmission grid, the internal renewable energy resources are not adequately developed, despite their abundant resource potential throughout the country. This paper proposes a voltage source converter (VSC)-based high-voltage direct current (HVDC) transmission link to connect the Herat province in the west, which has huge solar and wind energy potential, to Kabul, the capital of the country and the main load center. A techno-economic analysis of this HVDC against high-voltage alternating current (HVAC) technology was performed to determine the suitability and effectiveness of the proposed transmission system. The active, reactive and corona losses were calculated as the technical parameters and the discounted cash flow (DCF) method was deployed to economically compare both technologies. The outcomes of the paper disclose that the implementation of this transmission project is techno-economically feasible, and can result in the energy security and economic stability of the country.

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Section: 2 Hvdc Corona Lossmentioning

confidence: 99%

Technical and Economic Analysis of an HVDC Transmission System for Renewable Energy Connection in Afghanistan

et al. 2022

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“…The analysis route is as follows: In the previous studies, the relationship between the DC component of corona current and the maximum surface nominal electric field intensity g max of transmission lines has been found and universally recognised [23, 33]. In order to make use of the existing research results, the correlations between the spectral components of corona current and the g max of transmission lines are analysed first here.…”

Section: Analysis Of Correlation Between DC Component and Spectral Comentioning

confidence: 99%

“…Secondly, according to the Anneberg formula [23, 33], which is widely used and proved to be relatively reliable, the effective value of corona current in HVDC transmission lines can be calculated by the following equation:

I_{c} = 2 ()(, K_{0} + 1) K_{c} n r 2^{()(, 0.25 g_{\max} - g_{0})} L \times 10^{- 3}

where,

I_{c}

is the effective value of corona current, in A. L is the length of the line, in km.

K_{c}

is the surface coefficient of conductor.…”

Section: Analysis Of Correlation Between DC Component and Spectral Co...mentioning

confidence: 99%

“…In order to avoid the blindness of fitting the experimental data directly and the shortcomings of low universality due to the limited number of experimental samples, this paper studied the relationship between DC component and spectral components by combining theoretical analysis and experimental research. The analysis route is as follows: In the previous studies, the relationship between the DC component of corona current and the maximum surface nominal electric field intensity g max of transmission lines has been found and universally recognised [23,33]. In order to make use of the existing research results, the correlations between the spectral components of corona current and the g max of transmission lines are analysed first here.…”

Section: Analysis Of Correlation Between DC Component and Spectral Co...mentioning

confidence: 99%

“…Secondly, according to the Anneberg formula [23,33], which is widely used and proved to be relatively reliable, the effective value of corona current in HVDC transmission lines can be calculated by the following equation:…”

Section: Analysis Of Correlation Between DC Component and Spectral Co...mentioning

confidence: 99%

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Analysis of the relationship between DC component and spectral components of corona current on HVDC transmission lines

Liu

Cui

et al. 2019

IET Generation Trans & Dist

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Corona current is an important parameter to characterise the corona discharge on high‐voltage direct current (HVDC) transmission lines. The spectral components of corona current are closely related to a variety of corona effects, such as audible noise. It is of great significance to study the frequency‐domain characteristics of corona current. Here, the relationship between DC component and spectral components of corona current on HVDC transmission lines in the band of 2–20 kHz was analysed. First, a lot of corona current data were measured in two HVDC experiment bases. Then, the expression representing the correlation between DC component and spectral components of corona current within 2–20 kHz was established with the maximum surface nominal electric field intensity of conductor as an intermediate variable. Finally, the correctness and universality of the relationship found were verified. The research results here not only reveal the characteristics of corona discharge but can also provide a new way for obtaining the spectral components of corona current in 2–20 kHz with its DC component, and can lay the foundation to provide a new way to get audible noise indirectly based on the DC component of corona current in the future.

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On the radiated EMI current extraction of dc transmission line based on corona current statistical measurements

Chen

Wang

2018

AIP Advances

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Corona-originated discharge of DC transmission lines is the main reason for the radiated electromagnetic interference (EMI) field in the vicinity of transmission lines. A joint time-frequency analysis technique was proposed to extract the radiated EMI current (excitation current) of DC corona based on corona current statistical measurements. A reduced-scale experimental platform was setup to measure the statistical distributions of current waveform parameters of aluminum conductor steel reinforced. Based on the measured results, the peak value, root-mean-square value and average value with 9 kHz and 200 Hz band-with of 0.5 MHz radiated EMI current were calculated by the technique proposed and validated with conventional excitation function method. Radio interference (RI) was calculated based on the radiated EMI current and a wire-to-plate platform was built for the validity of the RI computation results. The reason for the certain deviation between the computations and measurements was detailed analyzed.

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Contribution to the Electrical Design of EHVDC Overhead Lines

Cited by 10 publications

References 2 publications

Technical and Economic Analysis of an HVDC Transmission System for Renewable Energy Connection in Afghanistan

Technical and Economic Analysis of an HVDC Transmission System for Renewable Energy Connection in Afghanistan

Analysis of the relationship between DC component and spectral components of corona current on HVDC transmission lines

On the radiated EMI current extraction of dc transmission line based on corona current statistical measurements

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