Computation of electrical field and potential around stranded conductor by analytical method and comparison with charge-simulation method

Parekh, H.; Selim, M. Sami; Nasser, Essam

doi:10.1049/piee.1975.0150

Cited by 4 publications

(11 citation statements)

References 2 publications

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“…Typically the conductors are taken to occupy either an infinite full space, 10,14 an infinite half space, 2,[5][6][7][8][9]11,12,16,17,[19][20][21]24,28,30 or a finite circular space. 2,23 The conductors themselves are assumed as either circular and solid 2,5,6,20,24 or stranded, 2,10,11,14,15,21,23,29 arranged either singly 2,5,6,[8][9][10][11]14,18,20,24 or in pairs 12,17,[26][27][28][29] or in bundles. 6,…”

Section: -1 1st Readingmentioning

confidence: 99%

“…Methods of calculation vary widely, with almost all possible having been tried at one time or another. These include methods of charge simulation, [4][5][6][7]11,13,16,23,28 finite element, 1,4,5,8,9,18,20,27,28 integral equation, 25,28 neural networks, 31 iteration, 2,5,8,28 flux tracing, 2,16,17,24 analytic expansions, 10,23 boundary elements, 22 and finally direct measurement. 15,19,21,29,31 In contrast, verification of calculations involves a more limited repertoire of methods; namely comparison to measurements, 1,2,[6][7][8][9]11,17,21,24,[27][28]…”

Section: -1 1st Readingmentioning

confidence: 99%

“…15,19,21,29,31 In contrast, verification of calculations involves a more limited repertoire of methods; namely comparison to measurements, 1,2,[6][7][8][9]11,17,21,24,[27][28][29]31 other published results, 5,14,16,20,30 theoretical results, 4,22 and some other technique. 2,23 Comparison to measurements is valuable, but the accuracy of the measurements are usually quite limited and do not serve as a very strong means of validating any particular technique. Comparison of one technique to another is fraught with even more problems.…”

Section: -1 1st Readingmentioning

confidence: 99%

“…Of the techniques employed, the finite element method 27 (FEM) and charge simulation method 23,32 (CSM) are perhaps the most general and well established.…”

Section: -1 1st Readingmentioning

confidence: 99%

“…It has been shown by comparison to analytical results to be in error by around 4%. 23 Typically, the geometry of conductors is taken to be either circular or, in the case of cables, a collection of circular strands 3,11,33 in contact with one another.…”

Section: Calculation Of Power Line Fields Between Circular Conductorsmentioning

confidence: 99%

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Calculation of Power Line Fields Between Circular Conductors

Seagar

Nilboworn

2012

Int. J. Model. Simul. Sci. Comput.

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It is important to calculate the electric field at the surface of high voltage direct current power transmission lines, since it is this field which governs the onset of corona discharge and the power loss arising therefrom. A method is presented here to calculate the electric field based on an implementation of the boundary element method for conductors of strictly circular cross section. Given the circular geometry it is possible to resolve all integrals involved analytically. A Galerkin approach is adopted, giving the solution in the spatial frequency domain. That allows a controlled truncation of the system matrix by choice of which frequency components to keep. It transpires that the low frequency components are the most important ones. Two test cases are used to quantify the accuracy of the solution with respect to truncation and distance from the surface. It is found that the accuracy increases with distance from the surface, but for all distances can be controlled by choosing an appropriate level of truncation.

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Section: -1 1st Readingmentioning

confidence: 99%

Section: -1 1st Readingmentioning

confidence: 99%

Section: -1 1st Readingmentioning

confidence: 99%

“…Of the techniques employed, the finite element method 27 (FEM) and charge simulation method 23,32 (CSM) are perhaps the most general and well established.…”

Section: -1 1st Readingmentioning

confidence: 99%

Section: Calculation Of Power Line Fields Between Circular Conductorsmentioning

confidence: 99%

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Calculation of Power Line Fields Between Circular Conductors

Seagar

Nilboworn

2012

Int. J. Model. Simul. Sci. Comput.

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New insight on filamentary charge‐loaded flows originated by pulsating glow‐type unipolar coronas in atmospheric air

Lattarulo

2023

IET Science Measure & Tech

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The diffusional process involving elastic collisions between charge carriers and neutrals has long been the predominant candidate for post‐injection momentum loss in the far wider drift region outside confined DC corona discharges in gases. A supplementary research paradigm is here put forward for the interest of a greater understanding of corona‐assisted unipolar ion flows in atmospheric air. In this respect, the auto‐pulsing mode of glow‐type coronas in air is modelled as a source of momentum whose conservation is substantially preserved across the external transfer region. The tangible prospect of charge‐bearing flows in the form of a filamentary convection, with negligible drifting component, in buffer gas is put forward in relation to spontaneous symmetry‐breaking instability. This setting bears some resemblance to the self‐organised collective behaviour of self‐propelled (active) particles. The value of this scheme gains strength precisely in relation to the strong inhomogeneity of the electric field surrounding electrodes prone to go into corona. On such a basis, it is believed that the drift of corona‐generated ions deserves to be reconsidered in view of the arguments set out in the present modelling.

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