Details
| Original language | English |
|---|---|
| Pages (from-to) | 47-59 |
| Number of pages | 13 |
| Journal | European Transactions on Electrical Power |
| Volume | 17 |
| Issue number | 1 |
| Publication status | Published - Jan 2007 |
Abstract
Most of breakdowns are caused by aging effects of high-voltage insulation used within these components, and there is still a need of suitable tools to diagnose such systems non-destructively and reliably in the field. Several methods have been published in the last decade for which reliable diagnostics are claimed. One of these methods is based on changes of the dielectric properties of the insulation. Dielectric spectroscopy provides information on molecular dynamics and free charge carriers and it is sensitive to the insulation morphology, that is crystallinity, oxidation, additives, and impurities (ions and dipolar molecules). The measurement of dielectric constants and dielectric losses in frequency domain help to quantify the chemical and physical changes in the bulk of polymer due to aging. The results of frequency domain measurements in this contribution show that the effects of aging of insulators can be analyzed by this method. This paper demonstrates the use of a dielectric spectroscopy technique for monitoring the effect of different aging on silicone rubber, ethylene-propylene diene monomer (EPDM), and blend of silicone-EPDM and new polymeric alloy. New polymeric alloy is found to be suitable for humid environment and shows good hydro-thermal resistance compared to other polymers; also it is cheaper than other materials.
Keywords
- Dielectric spectroscopy, Dissipation factor, Permittivity, Polarization
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: European Transactions on Electrical Power, Vol. 17, No. 1, 01.2007, p. 47-59.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The dielectric behavior of outdoor high-voltage polymeric insulation due to environmental aging
AU - Ehsani, M.
AU - Bakhshandeh, G. R.
AU - Morshedian, J.
AU - Borsi, H.
AU - Gockenbach, E.
AU - Shayegani, A. A.
N1 - Copyright: Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/1
Y1 - 2007/1
N2 - Most of breakdowns are caused by aging effects of high-voltage insulation used within these components, and there is still a need of suitable tools to diagnose such systems non-destructively and reliably in the field. Several methods have been published in the last decade for which reliable diagnostics are claimed. One of these methods is based on changes of the dielectric properties of the insulation. Dielectric spectroscopy provides information on molecular dynamics and free charge carriers and it is sensitive to the insulation morphology, that is crystallinity, oxidation, additives, and impurities (ions and dipolar molecules). The measurement of dielectric constants and dielectric losses in frequency domain help to quantify the chemical and physical changes in the bulk of polymer due to aging. The results of frequency domain measurements in this contribution show that the effects of aging of insulators can be analyzed by this method. This paper demonstrates the use of a dielectric spectroscopy technique for monitoring the effect of different aging on silicone rubber, ethylene-propylene diene monomer (EPDM), and blend of silicone-EPDM and new polymeric alloy. New polymeric alloy is found to be suitable for humid environment and shows good hydro-thermal resistance compared to other polymers; also it is cheaper than other materials.
AB - Most of breakdowns are caused by aging effects of high-voltage insulation used within these components, and there is still a need of suitable tools to diagnose such systems non-destructively and reliably in the field. Several methods have been published in the last decade for which reliable diagnostics are claimed. One of these methods is based on changes of the dielectric properties of the insulation. Dielectric spectroscopy provides information on molecular dynamics and free charge carriers and it is sensitive to the insulation morphology, that is crystallinity, oxidation, additives, and impurities (ions and dipolar molecules). The measurement of dielectric constants and dielectric losses in frequency domain help to quantify the chemical and physical changes in the bulk of polymer due to aging. The results of frequency domain measurements in this contribution show that the effects of aging of insulators can be analyzed by this method. This paper demonstrates the use of a dielectric spectroscopy technique for monitoring the effect of different aging on silicone rubber, ethylene-propylene diene monomer (EPDM), and blend of silicone-EPDM and new polymeric alloy. New polymeric alloy is found to be suitable for humid environment and shows good hydro-thermal resistance compared to other polymers; also it is cheaper than other materials.
KW - Dielectric spectroscopy
KW - Dissipation factor
KW - Permittivity
KW - Polarization
UR - http://www.scopus.com/inward/record.url?scp=33846703439&partnerID=8YFLogxK
U2 - 10.1002/etep.119
DO - 10.1002/etep.119
M3 - Article
AN - SCOPUS:33846703439
VL - 17
SP - 47
EP - 59
JO - European Transactions on Electrical Power
JF - European Transactions on Electrical Power
SN - 1430-144X
IS - 1
ER -