2018
DOI: 10.1063/1.5017297
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Abstract: Research on aging parameters of XLPE cable based on isothermal relaxation current AIP Advances 8, 075323 (2018) Cross-linked polyethylene (XLPE) has been widely used as cable insulation material because of its excellent dielectric properties, thermal stability and solvent resistance. To understand the influence of thermal aging on AC leakage current in XLPE insulation, all XLPE specimens were aged in oven in temperature range from 120 • C to 150 • C, and a series of tests were conducted on these XLPE specimens… Show more

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Cited by 22 publications
(5 citation statements)
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“…Tan δ with the increase of frequency, the increase of conductivity has a more significant effect on tan δ role of is slowly diminishing. On the other hand, with the increase of thermal aging time, the number of dipoles and jump carriers in the medium will gradually increase, thus making tan δ A strong low‐frequency dispersion effect appears at a lower frequency, and finally the tan δ increases with the increase of heat aging time, and it is more obvious in the low frequency range 24,25 . The dielectric constant is the main parameter reflecting the dielectric property or polarization property of material dielectric under the action of electrostatic field.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Tan δ with the increase of frequency, the increase of conductivity has a more significant effect on tan δ role of is slowly diminishing. On the other hand, with the increase of thermal aging time, the number of dipoles and jump carriers in the medium will gradually increase, thus making tan δ A strong low‐frequency dispersion effect appears at a lower frequency, and finally the tan δ increases with the increase of heat aging time, and it is more obvious in the low frequency range 24,25 . The dielectric constant is the main parameter reflecting the dielectric property or polarization property of material dielectric under the action of electrostatic field.…”
Section: Resultsmentioning
confidence: 99%
“…On the other hand, with the increase of thermal aging time, the number of dipoles and jump carriers in the medium will gradually increase, thus making tan δ A strong lowfrequency dispersion effect appears at a lower frequency, and finally the tan δ increases with the increase of heat aging time, and it is more obvious in the low frequency range. 24,25 The dielectric constant is the main parameter reflecting the dielectric property or polarization property of material dielectric under the action of electrostatic field. It can be seen from Figure 5b that the dielectric constant has no obvious change in the whole test range, and increases slightly with the aging degree, especially in 2184 and 2852 h, indicating that the polarity of PEEK material increases with the aging time.…”
Section: Dielectric Frequency Spectrum Analysismentioning
confidence: 99%
“…From previous research, the trap density has been reported to increase as the nanofiller were added to the polymer matrix. It has been found that incorporation of a small amount of nanoparticles into polymers able to escalate the energy or deep traps density [20][21][22]. Polymer nanocomposite has been also found to exhibit better suppression for accumulation of space charge and higher breakdown strength compared to the neat polymer [23][24][25][26].…”
Section: Discussionmentioning
confidence: 99%
“…Therefore, XLPE has become the focus of global attention in the cable industry . However, under the service conditions, XLPE insulations may undergo irreversible changes after their exposition to multiple effects of stressing factors such as temperature, pollution, humidity, and irradiation exposure to sunlight or ionizing rays . The stressing factors lead to the insulation properties degradation and a significant reduction in the effective operation life of the cables .…”
Section: Introductionmentioning
confidence: 99%