Characteristics of ACSR Conductors at High Temperatures and Stresses

Nigol, O.; Barrett, J.S.

doi:10.1109/tpas.1981.316905

Cited by 33 publications

(23 citation statements)

References 0 publications

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“…They determined that before the aluminum gets slack, it experiences a compression that is around 10 and 15 MPa for most conductors [10]. Hence, due to this effect, the knee-point temperature where the aluminum gets slack is increased.…”

Section: Strain Summation Methodsmentioning

confidence: 99%

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Flexible Strain-Tension Calculation Method for Gap-Type Overhead Conductors

Albizu

Mazón

Zamora

2009

IEEE Trans. Power Delivery

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Abstract-Commercially available sag-tension programs give good results for most practical applications. However, they have some limitations concerning gap-type conductors. A separate aluminum and core creep calculation is needed due to the especial structure of gap-type conductors. For the same reason, different core and aluminum lengths have to be considered. In order to take into account the creep during the installation process, flexibility for the consideration of several stages is needed. A method that considers all these characteristics has been developed and implemented in a comprehensive, versatile and flexible sag-tension software tool, called STOC (StrainTension in Overhead Conductors). The program has been designed for the analysis of gap-type conductors. However, the method is a general method that can be used for any type of conductor, especially when flexibility for the calculation of several creep conditions is needed.

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Section: Strain Summation Methodsmentioning

confidence: 99%

“…The relation between tension and strain is determined by the final elastic modulus of aluminum and core, (10) and (11). …”

Section: Mechanical Behaviormentioning

confidence: 99%

Flexible Strain-Tension Calculation Method for Gap-Type Overhead Conductors

Albizu

Mazón

Zamora

2009

IEEE Trans. Power Delivery

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“…It can be found that the relative errors of the conductor temperature by IEEE Standard Model are large, and the maximum arrives at no less than 10.24%, the accuracy of which cannot be as great as the proposed model, seeing that conductors are normally assumed to be isothermal by IEEE Standard Model. The dynamic process of the core temperature of the 5 sample experiments can be described by Equation (1), and then the specific expressions are as follows respectively: The curves of the core temperature by real measurement and the proposed model can be drawn respectively through calculating Equation (2) and measuring the real temperature, which can be shown in Figure 9. The curves of relative error of the core temperature by the proposed model can be shown in Figure 10.…”

Section: Model Validationmentioning

confidence: 99%

“…Relative research [1][2][3][4][5][6] has been shown that radial temperature difference straightly influenced the calculation of carrying capacity, sag, creep and aging characteristics. In order to correctly estimate operation safety of transmission line, and produce the development of the monitor technique for conductor, the calculation model of the core temperature of transmission line should be necessary.…”

Section: Introductionmentioning

confidence: 99%

A Model for Calculating Core Temperature of Bare Overhead Conductor Based on Neural Network

Zhai¹,

Ji²,

Ying³

2017

dtetr

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Abstract. Operation Security of transmission line is affected by operating temperature of bare overhead conductors. IEEE Standard Model has reflected that the current of a conductor should be decreased when the temperature difference between the core and surface exceed the special value. In order to accurately estimate the operating risk of bare overhead conductors, a model is proposed to calculate core temperature of a conductor based on BP neural network in this paper. An experimental plate was designed to validate the proposed model under the free convection and forced convection condition. The experimental and calculated results are analyzed and discussed.

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“…Some researchers developed a theory with respect to the transition process where the aluminium gets slack [17]. They determined that before the aluminium gets slack, it experiences a compression that is around 10 and 15 MPa for most of the conductors.…”

Section: Aluminium Compressionmentioning

confidence: 99%