Development of aerial fibre optic cables for operation on 400 kV power lines

Peacock, A.; Wheeler, J.C.G.

doi:10.1049/ip-a-3.1992.0050

Cited by 9 publications

(7 citation statements)

References 2 publications

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“…Above this voltage 'track-resistant' sheaths should be used. Such sheaths are typically aluminium trihydrate filled EVA blends [9,10]. Rowland and Nichols have previously argued that current should be the key parameter for application engineering [8].…”

Section: Dry-band Arcingmentioning

confidence: 99%

Modeling of Currents on Long Span, Dielectric Cables on HV Overhead Lines

Rowland

Kopsidas

Cotton

2007

IEEE Trans. Power Delivery

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It is well established that all-dielectric, selfsupporting cables on high voltage overhead power lines can suffer from damage through the mechanism of dry-band arcing. A number of heuristics have evolved over the past 20 years and these are used to determine whether such cables are capable of reliable performance. A key element to planning is modeling the installation conditions. In addition to the geometry of the high voltage line, such a model needs to consider the climatic environment and potential pollutants on the cable. In this paper a model is built based on the commercial software CDEGS (Current Distribution, Electromagnetic Fields, Grounding and Soil Structure Analysis) which is widely used in the power industry. The model developed is shown to be consistent with a number of previously published models. It is demonstrated that the relative sags of all-dielectric self-supporting cable and conductors is key to the severity of the installed situation. It is also shown that the towers do not need to be modeled for the most severe cases of high pollution, but are required for accuracy in medium and low pollution cases.

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Section: Dry-band Arcingmentioning

confidence: 99%

Modeling of Currents on Long Span, Dielectric Cables on HV Overhead Lines

Rowland

Kopsidas

Cotton

2007

IEEE Trans. Power Delivery

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“…Conditions (9) and (10) are derived from many laboratory tests and from installation measurements [10,19,24], but are critical to the analysis. In applications to date more conservative values have been used.…”

Section: The Use Of Conductivity To Control Stressmentioning

confidence: 99%

“…Unfortunately the issue of predicting cable lifetime remains unsolved for this approach. Nonetheless, experience suggests that a cable with a good dry-band arc-resistant material is satisfactory for most environments on systems up to 275 kV [9,10] although cables have failed, in extreme circumstances, on much lower voltage lines [11,12]. Thus, there is still debate concerning the true severity of any threat, and consensus has yet to be reached on many aspects of failure.…”

Section: Introductionmentioning

confidence: 99%

Prevention of dry-band arc damage on ADSS cables

Rowland

2006

IEEE Trans. Dielect. Electr. Insul.

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All-dielectric cables separately suspended along high voltage overhead transmission routes are vulnerable to ageing through dry-band arcing. The differences between this process and dry-band arcing on traditional high voltage insulators are reviewed. Solutions to the problem on all-dielectric self supporting (ADSS) cables which involve the introduction of controlled conductivity into the cable are considered. Analysis suggests that arcs which are both electrically stable and spatially confined must be avoided. It is shown that the cable can be protected by limiting either the current or the voltage available to an arc. These considerations reveal that a semiconductive element does not have to cover the whole cable length to provide effective protection against dry-band arcing in this application.

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“…The School of Electrical and Electronic Engineering, The University of Manchester, PO Box 88, Manchester, M60 1QD, UK suggests that a cable with a good dry-band, arc-resistant material is satisfactory for most environments on systems up to 275 kV [8], [9]. The debate on this continues, heavily influenced by commercial considerations and complicated by the fact that cables have survived in some situations in very high fields for long periods of time.…”

Section: S M Rowlandmentioning

confidence: 99%

“…Which aging mechanism tends to dominate depends upon the intensity of the arcing and the material concerned. Improvements have been made to the cable surface by producing improved polymeric compounds [8], [11]- [13]. These materials have significantly enhanced the life expectancy of cables.…”

Section: Dry-band Arcing On Adss Cablesmentioning

confidence: 99%

Engineering a solution to the aging of HV self-supporting cables by dry-band arcing

Rowland

2006

IEEE Electr. Insul. Mag.

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Development of aerial fibre optic cables for operation on 400 kV power lines

Cited by 9 publications

References 2 publications

Modeling of Currents on Long Span, Dielectric Cables on HV Overhead Lines

Modeling of Currents on Long Span, Dielectric Cables on HV Overhead Lines

Prevention of dry-band arc damage on ADSS cables

Engineering a solution to the aging of HV self-supporting cables by dry-band arcing

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