Progress in electrothermal life modeling of electrical insulation during the last decades

Montanari, G.C.; Mazzanti, G.; Simoni, L.

doi:10.1109/tdei.2002.1038660

Cited by 173 publications

(91 citation statements)

References 91 publications

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“…(14), could be improved by accounting for the applied voltage in eq. (1) by modifying K(T) to K(V, T) where V represents the variation as a result of the voltage.…”

Section: Discussionmentioning

confidence: 99%

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Electrothermal lifetime prediction of polyimide wire insulation with application to aircraft

Hondred

Bowler

Kessler

2013

J of Applied Polymer Sci

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This work investigates the electrothermal lifetime of a commonly used polyimide wire insulation material, Kapton V R , through the use of thermogravimetry (TG) and breakdown voltage testing. From TG, an isoconversional model-free kinetic evaluation was used to obtain a relationship between the activation energies of degradation for Kapton as a function of weight loss. By relating the electrical life theory and the TG theory through the model defined by Toop (IEEE Trans. Dielectr. Electr. Insul. 1971, 6, 2), the electrothermal lifetime of Kapton has been calculated for conditions of 12 and 14.7 kV over a temperature range of 250-400C. The resulting model can be used to make lifetime predictions for wire insulation degradation in aging aircraft for improved safety and risk assessment.

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“…(14), could be improved by accounting for the applied voltage in eq. (1) by modifying K(T) to K(V, T) where V represents the variation as a result of the voltage.…”

Section: Discussionmentioning

confidence: 99%

“…[12][13][14] In the calculation of electrothermal lifetime, the degree of Rearranging and integrating the governing equation with r replaced by V gives:…”

Section: Lifetime Theorymentioning

confidence: 99%

Electrothermal lifetime prediction of polyimide wire insulation with application to aircraft

Hondred

Bowler

Kessler

2013

J of Applied Polymer Sci

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“…As a consequence, the logarithm of the time-to-end point, i.e. "thermal life", is inversely proportional to temperature Θ and meantime-to-failure (MTTF), μ(Θ), can be expressed as [2,4,5]: An alternative is the thermodynamic Eyring model [5,6]:…”

Section: A Life Modeling Under Constant Thermal Stressmentioning

confidence: 99%

Towards real-time life estimation of capacitors subjected to time-varying temperature

Albertini

Masi

Mazzanti

et al. 2010

2010 Annual Report Conference on Electrical Insulation and Dielectic Phenomena

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This paper deals with a life model for low voltage polyester-insulated capacitors subjected to time-varying temperature. The results of accelerated life tests performed on low voltage polyester-insulated capacitors at various temperatures are illustrated and from them a constant-temperature life model is derived. Such model, inserted within a "Miner's law" framework, gives rise to a variable-temperature life model that is compared with the results of subsequent life tests performed on the same kind of capacitors under daily temperature cycles. This is a milestone towards real-time life estimation of capacitors subjected to time-varying temperature, as well as towards the extension of this approach to other electrical devices.

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“…There are few ________________________ researches on the economic loss assessment of power distribution harmonics, more about the influence of harmonics on power equipment losses; some literature also give the simplified formula of the influence of harmonics on the life of power equipment [1] . However, there are few reviews on the economic quantification of harmonic hazards [2] , and lack of a unified evaluation system of harmonic economic losses in distribution networks.…”

Section: Introductionmentioning

confidence: 99%

Study on the Evaluation Method of Harmonic Loss Based on Data Analysis in Distribution Network

Xie¹,

Wei²,

Pan³

2018

dteees

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Because of the lack of unified and scientific method for the evaluation of harmonic loss in distribution network, based on the big data analysis method of the power, this paper established the harmonic loss assessment system of distribution network including data, index and application, constructed the evaluation index system of harmonic loss. Combined with radial basis (RBF) neural network, improved conventional particle swarm optimization (PSO) algorithm, and made the harmonic loss assessment system with adaptive chaotic particle swarm optimization RBF (CAPSO-RBF) neural network. Refer to the harmonic core temperature rise model of electric cable, got the insulation aging life evaluation model of electric cable under the influence of harmonic. The case analysis proved the feasibility of the method and verifies the reasonableness of the designed evaluation system.

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Progress in electrothermal life modeling of electrical insulation during the last decades

Abstract: This paper has the purpose of highlighting the achievements during the last decades in life modeling under electrothermal stress. Phenomenological and physical models are examined, considering also a statistical approach, with applications to experimental results..

Cited by 173 publications

References 91 publications

Electrothermal lifetime prediction of polyimide wire insulation with application to aircraft

Electrothermal lifetime prediction of polyimide wire insulation with application to aircraft

Towards real-time life estimation of capacitors subjected to time-varying temperature

Study on the Evaluation Method of Harmonic Loss Based on Data Analysis in Distribution Network

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