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Trapping parameters comparison between cable sections from different service conditions by a new trapping-detrapping model

Trapping parameters comparison between cable sections from different service conditions by a new trapping-detrapping model
Trapping parameters comparison between cable sections from different service conditions by a new trapping-detrapping model
Space charge formation will cause electric field enhancement at certain location in the polymeric materials, especially under HVDC insulation condition. In our previous works, a model has been developed which is suitable for analysing the space charge data from depolarization test to calculate the material trapping parameters. In the present paper, two cross-linked polyethylene (XLPE) cables, taken from HVAC service condition of 220kV for 12 years and for 8 years, were peeled as 100-200µm films from the outer to inner layer of insulation. Through the comparison between trapping parameters estimated from our model, it has been found that samples from inner insulation layers for both cables have the deepest trap depth and the greatest deep trap density, indicating samples from inner layers have the severest ageing.
978-1-4799-7525-9
449-452
Liu, Ning
b4cdf4f9-bc5e-46c5-bd88-ed4d29074a85
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Xu, Yang
61510c27-6d1e-4d23-aded-65e5469bef1d
Liu, Ning
b4cdf4f9-bc5e-46c5-bd88-ed4d29074a85
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Xu, Yang
61510c27-6d1e-4d23-aded-65e5469bef1d

Liu, Ning, Chen, George and Xu, Yang (2014) Trapping parameters comparison between cable sections from different service conditions by a new trapping-detrapping model. IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), United States. 19 - 22 Oct 2014. pp. 449-452 . (doi:10.1109/CEIDP.2014.6995737).

Record type: Conference or Workshop Item (Paper)

Abstract

Space charge formation will cause electric field enhancement at certain location in the polymeric materials, especially under HVDC insulation condition. In our previous works, a model has been developed which is suitable for analysing the space charge data from depolarization test to calculate the material trapping parameters. In the present paper, two cross-linked polyethylene (XLPE) cables, taken from HVAC service condition of 220kV for 12 years and for 8 years, were peeled as 100-200µm films from the outer to inner layer of insulation. Through the comparison between trapping parameters estimated from our model, it has been found that samples from inner insulation layers for both cables have the deepest trap depth and the greatest deep trap density, indicating samples from inner layers have the severest ageing.

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Published date: 20 October 2014
Venue - Dates: IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), United States, 2014-10-19 - 2014-10-22
Organisations: EEE

Identifiers

Local EPrints ID: 373706
URI: http://eprints.soton.ac.uk/id/eprint/373706
ISBN: 978-1-4799-7525-9
PURE UUID: ce23cc3e-c638-48a7-b395-6cbf2e51366f

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Date deposited: 09 Feb 2015 10:19
Last modified: 19 Jul 2019 20:53

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