Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current

Yuanwei Zhu; Shengtao Li; Tengfei Li; Daomin Min; Bo Ma

doi:10.1109/ICPADM.2015.7295220

Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current

Yuanwei Zhu, Shengtao Li, Tengfei Li, Daomin Min, Bo Ma

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Citations (Scopus)

Abstract

As the core equipment of the DC transmission system, the converter transformers have been widely used in power systems. The space charge accumulation, transport and dissipation in oil-paper insulation are more complex than in polymeric insulating materials. Insulation damage caused by space charge is one of the main reasons for transformer fault, and has become a direct threat to the safe operation of the power system. Thermally stimulated depolarization current (TSDC) test is one of the important methods to analyze trap energy levels and charge transport properties of dielectric. TSDC test with different bias voltages (-25V, -12.5V, +25V and +50V) in temperature range of -100 °C ∼ 160 °C is used to distinguish dipole TSDC peaks from space charge ones in oil-paper insulation structure. The experimental results show that the -75 °C, 50 °C TSDC current peaks are not caused by space charge and the 150 °C peak meet the space charge characteristics. Activation energy, polarization intensity and relaxation time of each TSDC peak have been calculated correspondingly. The test has significance for better understanding of space charge accumulation, distribution and charge transport properties in oil-paper insulation, and is of great value for mechanism analysis of breakdown in oil-paper insulation.

Original language	English
Title of host publication	Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	108-111
Number of pages	4
Volume	2015-October
ISBN (Print)	9781479989034
DOIs	https://doi.org/10.1109/ICPADM.2015.7295220
Publication status	Published - 2015 Oct 8
Externally published	Yes
Event	11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015 - Sydney, Australia Duration: 2015 Jul 19 → 2015 Jul 22

Other

Other	11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015
Country/Territory	Australia
City	Sydney
Period	15/7/19 → 15/7/22

Keywords

Oil-paper insulation
space charge
thermally stimulated depolarization current

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Condensed Matter Physics

Access to Document

10.1109/ICPADM.2015.7295220

Cite this

Zhu, Y., Li, S., Li, T., Min, D., & Ma, B. (2015). Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current. In Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials (Vol. 2015-October, pp. 108-111). Article 7295220 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICPADM.2015.7295220

Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current. / Zhu, Yuanwei; Li, Shengtao; Li, Tengfei et al.
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. Vol. 2015-October Institute of Electrical and Electronics Engineers Inc., 2015. p. 108-111 7295220.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhu, Y, Li, S, Li, T, Min, D & Ma, B 2015, Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current. in Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials. vol. 2015-October, 7295220, Institute of Electrical and Electronics Engineers Inc., pp. 108-111, 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, Sydney, Australia, 15/7/19. https://doi.org/10.1109/ICPADM.2015.7295220

@inproceedings{1e1d983d80c44543a6c94a61b9cb43d8,

title = "Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current",

abstract = "As the core equipment of the DC transmission system, the converter transformers have been widely used in power systems. The space charge accumulation, transport and dissipation in oil-paper insulation are more complex than in polymeric insulating materials. Insulation damage caused by space charge is one of the main reasons for transformer fault, and has become a direct threat to the safe operation of the power system. Thermally stimulated depolarization current (TSDC) test is one of the important methods to analyze trap energy levels and charge transport properties of dielectric. TSDC test with different bias voltages (-25V, -12.5V, +25V and +50V) in temperature range of -100 °C ∼ 160 °C is used to distinguish dipole TSDC peaks from space charge ones in oil-paper insulation structure. The experimental results show that the -75 °C, 50 °C TSDC current peaks are not caused by space charge and the 150 °C peak meet the space charge characteristics. Activation energy, polarization intensity and relaxation time of each TSDC peak have been calculated correspondingly. The test has significance for better understanding of space charge accumulation, distribution and charge transport properties in oil-paper insulation, and is of great value for mechanism analysis of breakdown in oil-paper insulation.",

keywords = "Oil-paper insulation, space charge, thermally stimulated depolarization current",

author = "Yuanwei Zhu and Shengtao Li and Tengfei Li and Daomin Min and Bo Ma",

year = "2015",

month = oct,

day = "8",

doi = "10.1109/ICPADM.2015.7295220",

language = "English",

isbn = "9781479989034",

volume = "2015-October",

pages = "108--111",

booktitle = "Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015 ; Conference date: 19-07-2015 Through 22-07-2015",

}

TY - GEN

T1 - Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current

AU - Zhu, Yuanwei

AU - Li, Shengtao

AU - Li, Tengfei

AU - Min, Daomin

AU - Ma, Bo

PY - 2015/10/8

Y1 - 2015/10/8

N2 - As the core equipment of the DC transmission system, the converter transformers have been widely used in power systems. The space charge accumulation, transport and dissipation in oil-paper insulation are more complex than in polymeric insulating materials. Insulation damage caused by space charge is one of the main reasons for transformer fault, and has become a direct threat to the safe operation of the power system. Thermally stimulated depolarization current (TSDC) test is one of the important methods to analyze trap energy levels and charge transport properties of dielectric. TSDC test with different bias voltages (-25V, -12.5V, +25V and +50V) in temperature range of -100 °C ∼ 160 °C is used to distinguish dipole TSDC peaks from space charge ones in oil-paper insulation structure. The experimental results show that the -75 °C, 50 °C TSDC current peaks are not caused by space charge and the 150 °C peak meet the space charge characteristics. Activation energy, polarization intensity and relaxation time of each TSDC peak have been calculated correspondingly. The test has significance for better understanding of space charge accumulation, distribution and charge transport properties in oil-paper insulation, and is of great value for mechanism analysis of breakdown in oil-paper insulation.

AB - As the core equipment of the DC transmission system, the converter transformers have been widely used in power systems. The space charge accumulation, transport and dissipation in oil-paper insulation are more complex than in polymeric insulating materials. Insulation damage caused by space charge is one of the main reasons for transformer fault, and has become a direct threat to the safe operation of the power system. Thermally stimulated depolarization current (TSDC) test is one of the important methods to analyze trap energy levels and charge transport properties of dielectric. TSDC test with different bias voltages (-25V, -12.5V, +25V and +50V) in temperature range of -100 °C ∼ 160 °C is used to distinguish dipole TSDC peaks from space charge ones in oil-paper insulation structure. The experimental results show that the -75 °C, 50 °C TSDC current peaks are not caused by space charge and the 150 °C peak meet the space charge characteristics. Activation energy, polarization intensity and relaxation time of each TSDC peak have been calculated correspondingly. The test has significance for better understanding of space charge accumulation, distribution and charge transport properties in oil-paper insulation, and is of great value for mechanism analysis of breakdown in oil-paper insulation.

KW - Oil-paper insulation

KW - space charge

KW - thermally stimulated depolarization current

UR - http://www.scopus.com/inward/record.url?scp=84962488096&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84962488096&partnerID=8YFLogxK

U2 - 10.1109/ICPADM.2015.7295220

DO - 10.1109/ICPADM.2015.7295220

M3 - Conference contribution

AN - SCOPUS:84962488096

SN - 9781479989034

VL - 2015-October

SP - 108

EP - 111

BT - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015

Y2 - 19 July 2015 through 22 July 2015

ER -

Trap parameters analysis of oil-paper insulation by thermally stimulated depolarization current

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this