Test procedures and lifetime data analysis for electro-thermal endurance characterisation of EPR-insulated cables

Montanari, Gian Carlo; Mazzanti, G.; Simoni, L.

doi:10.1049/ip-smt:19981519

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Although these parameters depend on the aging mechanism of insulating materials, every component type has wide characteristic ranges which are hard to address explicitly the component type. This reflects the ranges found in a broad literature search [2,5,[14][15][16][17][18][19][20][21][22][23][24][25][26] which forms the basis of Table 2. In our models, the other parameters of equation (1) may be significantly modified by different equipment types and service conditions.…”

Section: Application Of the Modelsmentioning

confidence: 88%

Component Reliability Modeling of Distribution Systems Based on the Evaluation of Failure Statistics

Zhang¹,

Gockenbach²

2007

IEEE Trans. Dielect. Electr. Insul.

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The procedures of asset-management have been developed into a central element of network operation and planning in liberalised electric markets of power supply for the present. The method of asset management considers all relevant life cycle cost related to the network equipment and provides strategies for reinvestment, maintenance and fault elimination. However, the method requires practical information about the available failure statistic from distribution networks, as well as about the reliability evaluation of equipment installed in distribution network. For the quantitative evaluation we collect failure record data of distribution networks in the special failure statistic. Furthermore, this paper represents the first attempt at modeling the component reliability for representative electrical components due to electrical stress, mechanical stress, temperature and time, which takes general aging mechanisms of insulating materials into consideration. Thus the proposed models provide reliability estimates, e.g. failure probability and failure rate for distribution systems. These models can be not only parameterized with a great deal of statistical data but also determined by aging tests and breakdown tests being available for the probabilistic assessment. Our results imply that the assessment approach for component reliability will motivate a need for reasonable and accurate data at an early decision-making stage in future deregulation of electric power market.

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Section: Application Of the Modelsmentioning

confidence: 88%

Component Reliability Modeling of Distribution Systems Based on the Evaluation of Failure Statistics

Zhang¹,

Gockenbach²

2007

IEEE Trans. Dielect. Electr. Insul.

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“…Brown [4] studied XLPE and EPR from 1981 to 1991 and found that EPR has a better electrical characteristic over XLPE cable at temperature above 90 o C as XLPE produces drop in electric breakdown above its crystalline melting point. Montanari [5] performed various studies on space charge of dielectric materials and found that EPR cable has large values of endurance coefficients associated with high dielectric strength that give rise to lifelines even at relatively high electrical and thermal stresses. Arhart [6] expressed that EPR has excellent electrical properties which is comparable to XLPE.…”

Section: Introductionmentioning

confidence: 99%

Investigation of 22 kV silane cure TR-EPR cable

Agustin

Kalam

Zayegh

2020

IJAPE

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EPR-insulated cables for distribution power network are not commonly used in Australia. This is due to the higher DDF of common EPR cables when compared with XLPE that contributes to the power loss and economics in transmitting electricity. This led to the development of EPR called TR-EPR with significantly lower DDF and uses silane curing process to address concerns about cost-effectiveness. The thermal behavior of low DDF silane cure TR-EPR is investigated for 30 months of exposure to the maximum operating temperature of material. The physical changes in the samples throughout the long-term aging are examined to create an opportunity to model the expected life cycle of TR-EPR cable under thermal stress. The cross-linking characteristics of TR-EPR cable are also examined by ambient curing that simulates the storage condition for unused cable and by cable heating process that simulates the condition when the cable is energized. The results are tabulated for a better understanding of the time for the material to cross-link at various conditions. The improved partial discharge values after cross-linking are also presented.

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Measurement, evaluation and proposed solution for power distribution arrangements with electrical cables in parallel

2018

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Test procedures and lifetime data analysis for electro-thermal endurance characterisation of EPR-insulated cables

Cited by 3 publications

References 15 publications

Component Reliability Modeling of Distribution Systems Based on the Evaluation of Failure Statistics

Component Reliability Modeling of Distribution Systems Based on the Evaluation of Failure Statistics

Investigation of 22 kV silane cure TR-EPR cable

Measurement, evaluation and proposed solution for power distribution arrangements with electrical cables in parallel

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