An overview of the condition monitoring of overhead lines

Aggarwal, R.K.; Johns, A.T.; Jayasinghe, J.A.S.B.; Su, Wen

doi:10.1016/s0378-7796(99)00037-1

Cited by 108 publications

(52 citation statements)

References 4 publications

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“…The insulators are affected by impact, weathering, cyclic mechanical and thermal loading, electro-thermal causes, flexure and torsion, ionic motion, cement growth, and corrosion (Aggarwal et al, 2000). Temperature difference between hot sunny days and freezing cold nights as well as the heat generated by fault current arcs cause thermal cycling, which produce micro-cracks and allows water to penetrate into material.…”

Section: Damage To the Insulatorsmentioning

confidence: 99%

“…The amount of imposed stress depends on relative expansibility of dielectric, metal fittings, and the cement used to fix the metal fittings of the line to the dielectric. Cement growth, which is mainly caused by delayed hydration of periclase (MgO) as well as sulphate related expansion, generates radial cracks in the porcelain insulators' shell and makes them faulty (Aggarwal et al, 2000). Contaminants in the atmosphere, such as sea or road salts, can attack both Portland cement itself, or if penetrate into metal parts, can corrode galvanizing surface.…”

Section: Damage To the Insulatorsmentioning

confidence: 99%

See 1 more Smart Citation

Cable-Climbing Robots for Power Transmission Lines Inspection

Nayyerloo¹,

Chen²,

Wang³

et al. 2009

Mobile Robots - State of the Art in Land, Sea, Air, and Collaborative Missions

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Section: Damage To the Insulatorsmentioning

confidence: 99%

Section: Damage To the Insulatorsmentioning

confidence: 99%

Cable-Climbing Robots for Power Transmission Lines Inspection

Nayyerloo¹,

Chen²,

Wang³

et al. 2009

Mobile Robots - State of the Art in Land, Sea, Air, and Collaborative Missions

View full text Add to dashboard Cite

“…Because of being operated in wild environments, ACSR conductors are usually subject to fretting damage by wind excitation and atmospheric corrosion by industrial pollution and salty environments. As a type of critical component of high-voltage transmission systems, most ACSR conductors have been operated for 30-45 years, approaching to their middle life, thereby requiring very high maintenance costs [1][2][3][4][5][6]. Therefore, it is significant to explore fretting damage behaviors of ACSR conductors in dry and corrosive conditions.…”

Section: Introductionmentioning

confidence: 99%

Fretting Wear Behaviors of Aluminum Cable Steel Reinforced (ACSR) Conductors in High-Voltage Transmission Line

Gao

Zhang

2017

Metals

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This work reports the fretting wear behavior of aluminum cable steel reinforced (ACSR) conductors for use in high-voltage transmission line. Fretting wear tests of Al wires were conducted on a servo-controlled fatigue testing machine with self-made assistant apparatus, and their fretting process characteristics, friction force, wear damage, and wear surface morphology were detailed analyzed. The results show that the running regime of Al wires changes from a gross slip regime to a mixed regime more quickly as increasing contact load. With increasing amplitudes, gross slip regimes are more dominant under contact loads of lower than 30 N. The maximum friction force is relatively smaller in the NaCl solution than in a dry friction environment. The primary wear mechanisms in dry friction environments are abrasive wear and adhesive wear whereas abrasive wear and fatigue damage are dominant in NaCl solution.

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“…Monitoring of power lines is traditionally labor intensive [1][2][3]. Automating the monitoring of high-voltage transmission line systems is of importance to power utility safety [4,5].…”

Section: Introductionmentioning

confidence: 99%

A Stochastic Geometry Method for Pylon Reconstruction from Airborne LiDAR Data

Guo

Huang

et al. 2016

Remote Sensing

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Object detection and reconstruction from remotely sensed data are active research topic in photogrammetric and remote sensing communities. Power engineering device monitoring by detecting key objects is important for power safety. In this paper, we introduce a novel method for the reconstruction of self-supporting pylons widely used in high voltage power-line systems from airborne LiDAR data. Our work constructs pylons from a library of 3D parametric models, which are represented using polyhedrons based on stochastic geometry. Firstly, laser points of pylons are extracted from the dataset using an automatic classification method. An energy function made up of two terms is then defined: the first term measures the adequacy of the objects with respect to the data, and the second term has the ability to favor or penalize certain configurations based on prior knowledge. Finally, estimation is undertaken by minimizing the energy using simulated annealing. We use a Markov Chain Monte Carlo sampler, leading to an optimal configuration of objects. Two main contributions of this paper are: (1) building a framework for automatic pylon reconstruction; and (2) efficient global optimization. The pylons can be precisely reconstructed through energy optimization. Experiments producing convincing results validated the proposed method using a dataset of complex structure.

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An overview of the condition monitoring of overhead lines

Cited by 108 publications

References 4 publications

Cable-Climbing Robots for Power Transmission Lines Inspection

Cable-Climbing Robots for Power Transmission Lines Inspection

Fretting Wear Behaviors of Aluminum Cable Steel Reinforced (ACSR) Conductors in High-Voltage Transmission Line

A Stochastic Geometry Method for Pylon Reconstruction from Airborne LiDAR Data

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