Research on Mechanical, Physicochemical and Electrical Properties of XLPE-Insulated Cables under Electrical-Thermal Aging

被引：13

作者：

He, Dongxin ^{[1
]}

Zhang, Tao ^{[1
]}

Ma, Meng ^{[1
]}

Gong, Wenjie ^{[1
]}

Wang, Wei ^{[2
]}

Li, Qingquan ^{[1
]}

机构：

[1] Shandong Univ, Sch Elect Engn, Shandong Prov Key Lab UHV Transmiss Technol & Equ, Jinan 250061, Peoples R China

[2] North China Elect Power Univ, Beijing Key Lab High Voltage & Electromagnet Comp, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China

来源：

JOURNAL OF NANOMATERIALS | 2020年 / 2020卷

基金：

中国国家自然科学基金;

关键词：

SPACE-CHARGE; POWER CABLE; BEHAVIOR; DEGRADATION; DIAGNOSIS; BREAKDOWN; OIL; DC;

D O I：

10.1155/2020/3968737

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The stabilization of cross-linked polyethylene (XLPE) cables is crucial to the safe working of power systems. In order to investigate the aging characteristics of cable insulation in the process of operation, 10 kV XLPE cables were electrically-thermally aged at an AC voltage of 26.1 kV and three temperatures: 103 degrees C, 114 degrees C, and 135 degrees C. Cable samples at five aging stages were cut into slices and tested to determine their mechanical, physicochemical properties and dielectric strength. The changes in these properties were analyzed in terms of aging time. The mechanical strength and oxidation induction time have the same changing trend of decrease, because the chemical bonds of the cable insulation material are fractured when the XLPE cable is aged. The AC space charge presented a trend of gradual accumulation with aging time. The breakdown field strength after AC voltage application decreases monotonically with aging time, which could be a characteristic index to evaluate the degradation degree of the cable insulation. This research contributes to the comprehension of degradation mechanism and discovery of aging assessment criteria, which is of great significance in assessments of insulation properties and fault detection on power cables.

引用

页数：13

共 25 条

[1] Aging of 154 kV underground power cable insulation under combined thermal and electrical stresses [J].

Aras, Faruk ;

Alekperov, Vilayed ;

Can, Nursel ;

Kirkici, Hulya .

IEEE ELECTRICAL INSULATION MAGAZINE, 2007, 23 (05) :25-33

[2]

Bessissa L, 2014, ACTA POLYTECH HUNG, V11, P107

[3] An Approach for Economic Assessment on Oil-paper Insulation Diagnosis through Accelerated Aging Experiments [J].

Cao, Wen ;

He, Baosheng ;

Shen, Wei ;

Shi, Xuetao ;

Wu, Kai ;

Okamoto, Tatsuki ;

Suzuoki, Yasuo .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2014, 21 (04) :1842-1850

[4]

Chen XR, 2014, IEEE T DIELECT EL IN, V21, P45, DOI [10.1109/TDEI.2014.6740724, 10.1109/TDEI.2013.004108]

[5] The Effect of Ball Milling Time and Rotational Speed on Ultra High Molecular Weight Polyethylene Reinforced With Multiwalled Carbon Nanotubes [J].

Enqvist, Evelina ;

Ramanenka, Dmitrij ;

Marques, Paula A. A. P. ;

Gracio, Jose ;

Emami, Nazanin .

POLYMER COMPOSITES, 2016, 37 (04) :1128-1136

[6] The Measurement of Very Low Conductivity and Dielectric Loss in XLPE Cables: A Possible Method to Detect Degradation Due to Thermal Aging [J].

Fothergill, J. C. ;

Dodd, S. J. ;

Dissado, L. A. ;

Liu, T. ;

Nilsson, U. H. .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2011, 18 (05) :1544-1553

[7] Effect of Aluminum Oxide Coating on Structural, Barrier and Electret Properties of Polyethylene Terephthalate Films [J].

Galikhanov, M. F. ;

Guzhova, A. A. ;

Efremova, A. A. ;

Nazmieva, A. I. .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2015, 22 (03) :1492-1496

[8] Time domain analysis of partial discharges envelope in medium voltage XLPE cables [J].

Granado, J. ;

Alvarez-Arroyo, C. ;

Torralba, A. ;

Rosendo-Macias, J. A. ;

Chavez, J. ;

Burgos-Payan, M. .

ELECTRIC POWER SYSTEMS RESEARCH, 2015, 125 :220-227

[9] The contribution of field-induced morphological change to the electrical aging and breakdown of polyethylene [J].

Jones, JP ;

Llewellyn, JP ;

Lewis, TJ .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2005, 12 (05) :951-966

[10] Application of the AC Superposition Method to Degradation Diagnosis of 22/33-kV Class XLPE Cables [J].

Kumazawa, Takao .

ELECTRICAL ENGINEERING IN JAPAN, 2016, 195 (01) :32-39

← 1 2 3 →