A novel ice-shedding model for overhead power line conductors with the consideration of adhesive/cohesive forces

Ji, Kunpeng; Rui, Xiaoming; Li, Lin; Leblond, André; McClure, Ghyslaine

doi:10.1016/j.compstruc.2015.05.014

Cited by 53 publications

(26 citation statements)

References 16 publications

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“…Because of that proposed work, it is possible to estimate the level of ice (with a minimum error) by using historical meteorological data. More recently, [6] proposes an ice-shedding model for overhead power line conductors while considering adhesive/cohesive forces.…”

Section: Proposed Systemmentioning

confidence: 99%

Intelligent Control of Energy Distribution Networks

Chamoso

Paz

Bajo

et al. 2016

Advances in Intelligent Systems and Computing

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There has been continuous research in the energy distribution sector over the last years because of its significant impact in modern societies. Nonetheless, the use of high voltage power lines transport involves some risks that may be avoided with periodic reviews. The objective of this work is to reduce the number of these periodic reviews so that the maintenance cost of power lines is also reduced. This work is focused on the periodic review of transmission towers (TT) to avoid important risks, such as step and touch potentials, for humans. To reduce the number of TT to be reviewed, an organization-based agent system is proposed in conjunction with different artificial intelligence methods and algorithms. This system is able to propose a sample of TT from a selected set to be reviewed and to ensure that the whole set will have similar values without needing to review all the TT. As a result, the system provides a web application to manage all the review processes and all the TT of Spain, allowing the review companies to use the application either when they initiate a new review process for a whole line or area of TT, or when they want to place an entirely new set of TT, in which case the system would recommend the best place and the best type of structure to use.

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Section: Proposed Systemmentioning

confidence: 99%

Intelligent Control of Energy Distribution Networks

Chamoso

Paz

Bajo

et al. 2016

Advances in Intelligent Systems and Computing

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“…In that case, the only force that keeps the ice deposits on the cable is the cohesive force within the ice, and the ice will be shed off the cable if the resultant force acting on the ice accretion is greater than its cohesive force. Considering the above, the ice detachment criterion proposed in [19] can be modified to consider the induced-ice-shedding phenomenon triggered by random initial natural ice shedding. The modified criterion can be stated as follows: the ice deposit remaining on the cable will be shed off during the vibration generated by the initial ice shedding, if the resultant of vertical inertia force and gravity acting on the ice deposit is greater than the cohesive force within the ice.…”

Section: Modeling the Ice Detachment Process In Fe Analysismentioning

confidence: 99%

“…Then, Mirshafiei et al [17] improved the criterion to the total strain criterion and successfully applied it to dynamic analysis of transmission lines subjected to cable rupture shocks [18]. Recently, as an improvement, the authors [19,20] proposed an ice detachment criterion which considered both the adhesive force at the ice-cable interface and the cohesive force within the ice to explain the ice detachment mechanism. By comparing numerical results with reduced-scale and real-scale mechanical deicing tests, it was shown that the ice detachment criterion combined with the stress/strain ice failure criterion provides much improved prediction of the dynamic response of the test lines than previous modelling methods [19].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, as an improvement, the authors [19,20] proposed an ice detachment criterion which considered both the adhesive force at the ice-cable interface and the cohesive force within the ice to explain the ice detachment mechanism. By comparing numerical results with reduced-scale and real-scale mechanical deicing tests, it was shown that the ice detachment criterion combined with the stress/strain ice failure criterion provides much improved prediction of the dynamic response of the test lines than previous modelling methods [19]. In the present study, the ice detachment criterion is modified and implemented into a user-defined subroutine in FE analysis, allowing considering explicitly the induced-ice-shedding effect on transmission lines following initial natural ice shedding.…”

Section: Introductionmentioning

confidence: 99%

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The Time-Varying Characteristics of Overhead Electric Transmission Lines Considering the Induced-Ice-Shedding Effect

Rui

Lin

et al. 2015

Shock and Vibration

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More ice deposits accreted on conductors or ground wires may be shed off when an overhead electric transmission line is responding to shocks initiated by natural ice shedding. Ice shedding causes the global mass, stiffness, and damping of the tower-line system to vary with time, and the successive shedding effect beyond a trigger event has not been taken into account in previous studies due to the lack of an adequate ice detachment model. In this paper, the ice shedding effect induced by initial shocks was considered in finite element (FE) analysis. An ice detachment criterion, in the way of user-defined element rupture subroutine, was implemented into the main commercial nonlinear FE program ADINA, making it possible to consider the induced-ice-shedding effect numerically. The incremental FE form of the system’s governing equations of motion is presented where the variations in the mass and stiffness matrices of the system are taken into consideration. Taking a transmission line section following natural ice shedding as a case study, the results indicate that neglecting successive ice shedding underestimates the adverse influence of natural ice shedding. The proposed method can help to improve the design and evaluation of transmission lines in cold regions and to ensure their mechanical security.

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“…Also, a review on dynamic aspects, design and parametric study of transmission lines [16], analysis of an aeroelastic model of a real single transmission line span considering its flexural rigidity of the lattice tower, mass and drag using scaling method [17], large amplitude vibrations of ice-accreted/unaccreted conductors in transmission lines under wind force using eigenvalue analysis [18], and dynamic analysis of transmission lines using finite element method [19] have been presented. Recently, dynamic characteristics of transmission lines under turbulent downburst loading [20], measurement of their vibrations based on a heterodyne method [21], characteristics of the raininduced vibrations [22], an ice-detachment failure model for iced overhead electrical conductors [23], and modelling of the ice shedding propagation with or without spacers [24] have been performed.…”

Section: Introductionmentioning

confidence: 99%

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

Abbasi

Moradi

2020

SN Appl. Sci.

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Transmission lines are prone to external excitations due to their low density and internal damping coefficient. They are vulnerable to some natural events such as wind and rain which may disrupt power transmission. Forced vibration due to external disturbances is one of the most frequent causes of failures in these lines. In this study, effects of tuned-massdampers (TMDs) on reduction of forced vibrations are investigated. A mathematical model for the transmission line is proposed by using mode summation technique combined with the dynamics of the absorbers. Best values for the location, stiffness and mass of the absorbers are found by using Particle Swarm Optimization algorithm (damping coefficients are obtained as zero). The objective of the algorithm is to minimize the line deflection to postpone the failure and the replacement of the lines. Results show that the designed TMDs are efficient in reduction of forced vibrations. Finally, the same procedure is implemented under resonance condition. The designed TMDs lead to a high reduction factor in the line deflection. Similarly, the proposed optimization algorithm can be used in other industrial applications of the flexible cables; under various external excitations.

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A novel ice-shedding model for overhead power line conductors with the consideration of adhesive/cohesive forces

Cited by 53 publications

References 16 publications

Intelligent Control of Energy Distribution Networks

Intelligent Control of Energy Distribution Networks

The Time-Varying Characteristics of Overhead Electric Transmission Lines Considering the Induced-Ice-Shedding Effect

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

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