Physicochemical and electrical property of a new AC 500kV XLPE submarine cable insulation with different thermal aging condition

Wang, Xiaojian; Gao, Z.; Zhu, Zhigang; Li, Shiqiang; Zhiqian, Liu; Hao, Jian; Ma, Zhipeng

doi:10.1109/icpadm.2018.8401032

Cited by 2 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many articles have described the effect of various factors on the electrical conductivity γ of cross-linked polyethylene [1,[4][5][6][7][9][10][11][12]18,. These factors include electric field stress, percentage of nanoparticles (most commonly Al 2 O 3 ), distance from the high-voltage conductor, temperature, aging time, degassing time, frequency, and insulation thickness.…”

Section: Introductionmentioning

confidence: 99%

“…The most-studied property of XLPE is its dielectric loss coefficient tan(delta) [2,4,8,9,[12][13][14][15][16][17][18][19][20][21]23,27,33,34,39,[41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58]. Authors have analyzed the effects of frequency, aging time, cable life, voltage test, and temperature on the tan(delta) distribution and value.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electric Field Distribution and Dielectric Losses in XLPE Insulation and Semiconductor Screens of High-Voltage Cables

Nadolny

2022

Energies

View full text Add to dashboard Cite

This article presents the electric field distribution E and dielectric losses ΔPdiel. in the insulation system of high-voltage cables. Such a system consists of inner and outer semiconductor screens and XLPE insulation. The aim of this study was to compare the values of E and ΔPdiel. between semiconductor screens and XLPE insulation. The objects of the research were high-voltage cables of 110 kV, 220 kV, 400 kV, and 500 kV. The geometrical dimensions of the cables, especially the radii of individual layers of insulation, as well as the electrical properties of the screens and XLPE, were taken from the literature. Semiconductor screens and XLPE insulation were treated as a system of three concentric cylinders. When determining the electric field distribution, both the electrical permittivity and electrical conductivity, which, in the case of semiconductor screens, play important roles, were taken into account. The obtained results prove that both the electric field distribution E and dielectric losses Pdiel. are significantly larger in XLPE insulation than in semiconductor screens. The intensity E in XLPE insulation is about four orders of magnitude greater than the intensity in semiconductor screens. Dielectric losses ΔPdiel. in XLPE insulation are about eight orders of magnitude greater than the losses occurring in semiconductor screens.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electric Field Distribution and Dielectric Losses in XLPE Insulation and Semiconductor Screens of High-Voltage Cables

Nadolny

2022

Energies

View full text Add to dashboard Cite

show abstract

“…The irreversible degradation poses a safety hazard to the operation of submarine cables. Therefore, it is necessary to investigate the physical, chemical and electrical properties of XLPE submarine cable insulation under aging condition and explore the method for its deterioration degree assessment [3].…”

Section: Introductionmentioning

confidence: 99%

Morphological, Structural, and Dielectric Properties of Thermally Aged AC 500 kV XLPE Submarine Cable Insulation Material and Its Deterioration Condition Assessment

et al. 2019

Self Cite

View full text Add to dashboard Cite

Cross-linked polyethylene (XLPE) has been widely used as insulation material for cables. In 2019, the highest voltage level AC 500 kV XLPE submarine cable has been operated in Zhoushan, China. The irreversible degradation poses a safety hazard to the operation of submarine cable. Therefore, it is necessary to investigate the physical, chemical and electrical properties of XLPE submarine cable insulation under aging condition and explore the method for its deterioration degree assessment. In this paper, the AC 500 kV XLPE submarine cable insulation material was thermally aged at 130 • C. The deterioration characteristics of materials were analyzed based on morphology, chemical structure, mechanical property, thermal property and dielectric properties. Multiple characteristic parameters were extracted and new deterioration condition assessment model was established. Results show that the physicochemical characteristic parameters including retention rate of elongation at break, carbonyl index (CI) based on FTIR, full-width at half-maximum (FWHM) of the diffraction peak based on XRD, melting enthalpy based on DSC analysis, and the dielectric characteristic parameters including modified Cole-Cole model parameter χ sα and AC breakdown strength are sensitive to deterioration condition of XLPE material. According to the change of elongation retention at break, the deterioration condition of XLPE sample was divided into enhanced stage, wear-out stage and disposal stage. The new multi-factor deterioration condition assessment model including six characteristic parameters (retention rate of elongation at break, CI, FWHM, melting enthalpy, modified Cole-Cole model parameter χ sα , AC breakdown strength) was successfully established by grey correlation analysis. The new model can reflect the property of mechanical, chemical, thermal and dielectric property and has prominent effect in differentiating deterioration degree of the AC 500 kV XLPE submarine cable insulation material. INDEX TERMS Cross-linked polyethylene (XLPE), thermal aging, physicochemical properties, dielectric properties, condition assessment.

show abstract

Physicochemical and electrical property of a new AC 500kV XLPE submarine cable insulation with different thermal aging condition

Cited by 2 publications

References 1 publication

Electric Field Distribution and Dielectric Losses in XLPE Insulation and Semiconductor Screens of High-Voltage Cables

Electric Field Distribution and Dielectric Losses in XLPE Insulation and Semiconductor Screens of High-Voltage Cables

Morphological, Structural, and Dielectric Properties of Thermally Aged AC 500 kV XLPE Submarine Cable Insulation Material and Its Deterioration Condition Assessment

Contact Info

Product

Resources

About