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citations
Cited by 79 publications
(32 citation statements)
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References 14 publications
(24 reference statements)
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“…The effect of partial discharges on the electrical properties of the cable has been studied in a lot of investigations [16,17]. Much work has been carried out, and the chemical modifications generated by aging and its consequences on the mechanical and electrical properties of XLPE [10,[18][19][20][21] were analyzed. All these investigations are cost-effective and time-consuming.…”
Section: Introductionmentioning
confidence: 99%
“…The effect of partial discharges on the electrical properties of the cable has been studied in a lot of investigations [16,17]. Much work has been carried out, and the chemical modifications generated by aging and its consequences on the mechanical and electrical properties of XLPE [10,[18][19][20][21] were analyzed. All these investigations are cost-effective and time-consuming.…”
Section: Introductionmentioning
confidence: 99%
“…According to Arrhenius law, the frequency corresponding to each relaxation peak obeys the Arrhenius relation with the increase of temperature, 27,28 as shown in formula (9).…”
Section: B Test Results and Analysis Of Thermal Aging In The Range Omentioning
confidence: 99%
“…Two loss peaks were observed at 1 Hz and 100 Hz on the tanδ spectrum, which was contributed by the motion of amorphous segments in the chain as well as the crystal contribution in the lamellar chain twist respectively. 9 At present, the related researches are mainly focused on the change of dielectric properties and insulation state assessment of XLPE under various aging conditions. In order to effectively control the cable leakage current, and ensure production and personal safety, it is necessary to study the influencing factors and the changing laws of the AC leakage current in the cable insulation.…”
Section: Introductionmentioning
confidence: 99%
“…Such changes, if present, should also affect the electrical properties of material, including its conductivity. Evidences for increase of conductivity in XLPE during thermal ageing were presented in [21] and [24], explained by weakening of molecular bonds, an increase of free volume and the resulting change of charge carriers mobility. However, the conductivity measurements performed on the used LDPE material (1 mm thick plaques) at 70 °C and 30 kV showed a decrease by about 60% from ~210 -13 S/m in the un-aged state to ~710 -14 S/m after the thermal ageing.…”
Section: Xlpe Test Objectsmentioning
confidence: 99%