Investigation on Test Method of DC XLPE Cable

Sakamoto,; Fukagawa,; Yamada,; Yoshida, Minoru; Ninomiya,; Andò,

doi:10.1109/mper.1982.5520976

Cited by 2 publications

(2 citation statements)

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“…The obtained n values from the results of the four test groups all lie in the range of 13 to 16, which is consistent with the existing reference range of n values from 9 to 20 [21]. The values of I min for all groups do not exceed 5%, meeting the constraint of using λ max /3 as the Dc value.…”

Section: Tests and Data Validationsupporting

confidence: 86%

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Impact of step voltage parameters on accuracy of evaluating XLPE insulation DC voltage endurance coefficient

Ma,

Li,

Chen

et al. 2023

IET Generation Trans & Dist

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The voltage endurance coefficient n of cross‐linked polyethylene (XLPE) insulation is an important indicator for the analysis of insulation failure mechanism. Accurately obtaining the value of n can provide technical support for the reliability evaluation of cable operation. The constant stress method and the step stress method are used to obtain the values of n, but the test parameters can influence the accuracy of the obtained n values. Two methods for selecting test parameters are proposed. The equivalence between the two methods is established, providing theoretical support for the accurate evaluation of the n value of solid insulation materials by using the step stress method. The accuracy of the evaluation results is verified by analyzing the test data. The test results show that the nstep = 13.04 evaluated by the step stress test with the proposed parameter selection method is consistent with the test result of constant stress nconstant = 12.83.

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Section: Tests and Data Validationsupporting

confidence: 86%

“…The sample parameters can be obtained from the fitting result of the life curve as: n constant = 12.83, D constant = 3.42×10 21 . This is consistent with the n = 12.2 obtained in previous studies [6].…”

Section: Obtaining N Values By Constant Stress Testmentioning

confidence: 99%