Health diagnosis scheme for in-service low voltage Aerial Bundled Cables using super-heterodyned airborne Ultrasonic testing

Shahid, Muhammad Atayyab; Khan, Tariq Amin; Zafar, Taimoor; Hashmi, Muhammad Fuzail; Imran, Muhammad

doi:10.1016/j.epsr.2019.106162

Cited by 12 publications

(9 citation statements)

References 40 publications

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“…Acquired thermal data values from the failed cable are used as a reference in the reported study. 277 weeks was the recorded service life of this cable from date of installation [4].…”

Section: Case Studymentioning

confidence: 99%

“…Despite abovementioned benefits, the reliability of in-service ABCs, when subjected to changing climatic conditions, is not precisely known yet [6]. ABCs are reported to have a shorter lifespan when subjected to severe environmental conditions in coastal areas [4,7]. The combined effect of high solar radiation intensity, high moisture content, and heavy electrical loads in coastal metropolises, stresses the insulation of ABCs.…”

Section: Introductionmentioning

confidence: 99%

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Degradation assessment of in‐service aerial bundled cables in coastal areas leading to prognosis using infrared thermography

Hassan¹,

Khan²,

Abbas³

et al. 2020

IET Generation Trans & Dist

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Of late, cross-linked polyethylene insulated aerial bundled cables have replaced conventional copper conductors being resistant to electricity pilferage, offer lower maintenance costs and reduced power losses. However, in coastal areas, aerial bundled cables experience frequent insulation breakdown causing sudden cable failures leading to unexpected power shutdowns. Condition monitoring, employing sophisticated diagnostic techniques, has thus become a major requirement of the energy sector. The reported research work utilizes infrared thermography as one such candidate NDT technique. A novel framework is proposed to investigate the progressive shift in the statistical parameters of the temperature distribution in aerial bundled cables' insulation, as it degrades over time. The cumulative distribution function of pixel intensity data from a healthy/ operational aerial bundled cable is first compared with a reported failed aerial bundled cable. A prominent difference in 0.9 cumulative distribution function values is observed in the temperature distributions. Therefore, 0.9 cumulative distribution function values are used for degradation quantification with respect to ageing. Degradation rates are then computed using periodically acquired thermographic data from operational aerial bundled cables, installed at two different locations in a coastal region, each subjected to different marine climate. The proposed technique proved effective in degradation rate assessment of insulation of operational aerial bundled cables. Consequently, the results achieved can also be utilized for remaining useful life prediction of these cables. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Acquired thermal data values from the failed cable are used as a reference in the reported study. 277 weeks was the recorded service life of this cable from date of installation [4].…”

Section: Case Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Degradation assessment of in‐service aerial bundled cables in coastal areas leading to prognosis using infrared thermography

Hassan¹,

Khan²,

Abbas³

et al. 2020

IET Generation Trans & Dist

Self Cite

View full text Add to dashboard Cite

show abstract

“…Conductive cables are the main part of these lines, consisting of one or more stranded conductors, twisted from several wires of highly conductive metals. The conductive wires are usually made of aluminum [2][3][4][5][6][7][8][9]. The choice of aluminum is not only due to a number of reasons related to its physical properties, but also because of economic reasons [4,8].…”

Section: Introductionmentioning

confidence: 99%

“…The cores in a cable with several stranded cores are isolated from each other by jackets [2,11,12]. Depending on the environmental and operating conditions, cross-linked polyethylene with the addition of carbon black and titanium dioxide (XLPE cables) or special dense paper filled with either a viscous mixture of mineral oil and resin (massimpregnated cables) or liquid mineral oil (oil-filled cables) are used as a coating [2,12]. In the case of a single stranded conductor, either bare cables [3,4,6,9] or isolated ones [2,13] are used.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the environmental and operating conditions, cross-linked polyethylene with the addition of carbon black and titanium dioxide (XLPE cables) or special dense paper filled with either a viscous mixture of mineral oil and resin (massimpregnated cables) or liquid mineral oil (oil-filled cables) are used as a coating [2,12]. In the case of a single stranded conductor, either bare cables [3,4,6,9] or isolated ones [2,13] are used. Cables in which all the wires in the cores are made of aluminum or an aluminumbased alloy are called All Aluminum Alloy Conductor (AAAC) cables [3,6].…”

Section: Introductionmentioning

confidence: 99%

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The Structure of the Near-Surface Layer of the AAAC Overhead Power Line Wires after Operation and Its Effect on Their Elastic, Microplastic, and Electroresistance Properties

et al. 2022

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Overhead power-transmission lines are one of the most important components of modern infrastructure. Their service life is determined by the state of the near-surface defect layers (NSDLs) of wires constituting these lines. Both the structure and microstructure of the NSDLs of wires of the AAAC type (All Aluminum Alloy Conductor), which were in operation during 0 (new) to 62 years, were investigated by methods of the X-ray (XRD) and electron back-scattering diffraction, optical microscopy, and resistivity measurements, as well as by means of densitometric and acoustic measurements with layer-by-layer removal of the near-surface material by etching. Two characteristic thicknesses of the NSDLs were obtained, different methods providing close results, namely, ~30–50 μm and ~56–140 μm. According to the mass-density distribution (XRD), these characteristic thicknesses correspond to the depths from the surface where they occur, respectively, ~70% and ~99% of the density drop in comparison with the bulk density value. The rate of increase in NSDL thickness is ~4 μm/year in the interval from 0 to 18 years. Results of investigation of elastic and microplastic properties of wires after removal of ~35 μm of the upper layer are also presented.

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Construction of Intelligent Evaluation Model for Electric Power Marketing Inspection Status Based on Cloud Measurement

Zhang,

Wang

et al. 2024

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Health diagnosis scheme for in-service low voltage Aerial Bundled Cables using super-heterodyned airborne Ultrasonic testing

Cited by 12 publications

References 40 publications

Degradation assessment of in‐service aerial bundled cables in coastal areas leading to prognosis using infrared thermography

Degradation assessment of in‐service aerial bundled cables in coastal areas leading to prognosis using infrared thermography

The Structure of the Near-Surface Layer of the AAAC Overhead Power Line Wires after Operation and Its Effect on Their Elastic, Microplastic, and Electroresistance Properties

Construction of Intelligent Evaluation Model for Electric Power Marketing Inspection Status Based on Cloud Measurement

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