An Investigation and locating Water tree degradation in Power Cable Insulation based on Pulse Voltage

Water tree, electrical tree and electrochemical tree formed by premature defects of the cable can induce fault. The failure rate of the cable connecter which is higher than cable itself can emerge water tree, electrical tree and electrochemical tree. Meanwhile, the flashover, partial discharge and overheated of the cable joint are also the important reasons for fault. The oscillatory wave of detecting the power cable insulation defects based on is put forward in this paper in terms of the problems existed in the cable detection technology. With the application of oscillatory wave and signal source on the spot, this method dynamically generates reference database of detecting the cable insulation defects, to discriminate the fault patterns correspond to the maximum of function and detect the type, location and severity of cable insulation's defects. Water tree fault of premature cable itself and cable joint can also be detected in this method.

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Polyethylene Nanocomposites for Power Cable Insulations

Polymers ◽

10.3390/polym11010024 ◽

2018 ◽

Vol 11 (1) ◽

pp. 24 ◽

Cited By ~ 23

Author(s):

Ilona Pleşa ◽

Petru Noţingher ◽

Cristina Stancu ◽

Frank Wiesbrock ◽

Sandra Schlögl

Keyword(s):

Electrical Performance ◽

Power Cable ◽

Power Cables ◽

Structure Property ◽

Thermoplastic Polymers ◽

Water Tree ◽

Tree Resistance ◽

Structure Property Relationships ◽

Aging Mechanisms ◽

Comprehensive Study

This review represents a comprehensive study of nanocomposites for power cables insulations based on thermoplastic polymers such as polyethylene congeners like LDPE, HDPE and XLPE, which is complemented by original results. Particular focus lies on the structure-property relationships of nanocomposites and the materials’ design with the corresponding electrical properties. The critical factors, which contribute to the degradation or improvement of the electrical performance of such cable insulations, are discussed in detail; in particular, properties such as electrical conductivity, relative permittivity, dielectric losses, partial discharges, space charge, electrical and water tree resistance behavior and electric breakdown of such nanocomposites based on thermoplastic polymers are described and referred to the composites’ structures. This review is motivated by the fact that the development of polymer nanocomposites for power cables insulation is based on understanding more closely the aging mechanisms and the behavior of nanocomposites under operating stresses.

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Experimental study of XLPE power cable insulation detection based on the electrical capacitance tomography sensor

10.1109/cieec50170.2021.9510556 ◽

2021 ◽

Author(s):

Chao Li ◽

Huimin Wang ◽

Ming Wang ◽

Shanzhang Xu ◽

Tianran Gao ◽

...

Keyword(s):

Experimental Study ◽

Electrical Capacitance Tomography ◽

Power Cable ◽

Electrical Capacitance ◽

Cable Insulation ◽

Xlpe Power Cable ◽

Capacitance Tomography

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Polymer Composites for Power Cable Insulation

10.1002/9781119719687.ch5 ◽

2021 ◽

pp. 123-151

Author(s):

Yoitsu Sekiguchi

Keyword(s):

Polymer Composites ◽

Power Cable ◽

Cable Insulation

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Polypropylene/paper laminates as high voltage power cable insulation

1984 IEEE International Conference on Electrical Insulation ◽

10.1109/eic.1984.7465145 ◽

1984 ◽

Cited By ~ 1

Author(s):

J.C. Chan ◽

K. Hajra ◽

Z.S. Paniri

Keyword(s):

High Voltage ◽

Power Cable ◽

Cable Insulation

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Oxidation and Water Tree Formation in Service-Aged XLPE Cable Insulation

IEEE Transactions on Electrical Insulation ◽

10.1109/tei.1987.298900 ◽

1987 ◽

Vol EI-22 (4) ◽

pp. 405-412 ◽

Cited By ~ 64

Author(s):

A. Garton ◽

S. Bamji ◽

A. Bulinski ◽

J. Densley

Keyword(s):

Cable Insulation ◽

Xlpe Cable ◽

Water Tree

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Frame Work on an Injection Molding Rejuvenation Technique for Cable Insulation Failure

E3S Web of Conferences ◽

10.1051/e3sconf/202123501046 ◽

2021 ◽

Vol 235 ◽

pp. 01046

Author(s):

ChongWei Lv ◽

YongXiang Zhao ◽

JunGuo Wang ◽

ZhiWei Liu

Keyword(s):

Injection Molding ◽

Mechanical Damage ◽

Cable Insulation ◽

Plastic Molding ◽

Material Development ◽

Water Tree ◽

Insulation Failure ◽

Local Standard ◽

Standard Geometry ◽

Frame Work

Rejuvenation technique on cable insulation failures is a hot topic in improving production benefits for electric related enterprises. Breaking the traditional thought of repair action without extensive former damage in scale of the cable insulation, the proposed technique starts from the local standard geometry elimination on insulation or sheaths around cable insulation failure section(s). And then, one standard injection molding technique is applied for rejuvenation on eliminated insulation no matter of the failure resulting from water tree or local mechanical damage or other modes. By this advancement, an injection molding technique is perfectly developed for rejuvenation on cable insulation failure. Frame work on this technigue is hear introduced and it consists of three branches including injection molding material development, standard injection plastic molding technique, and coded quality approval regularities. Realizability and reliability of the present technigue have been verified by sampling testing to expect to be wide applied in production.

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