Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging

Mingfang Zou; Junxin Ke; Qiuli Tao; Yongjie Nie; Hua Chen; Huijuan Wang; Yuanwei Zhu; Shengtao Li

doi:10.1109/CIEEC64805.2025.11116162

Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging

Mingfang Zou
, Junxin Ke
, Qiuli Tao
, Yongjie Nie
, Hua Chen
, Huijuan Wang
, Yuanwei Zhu
, Shengtao Li

School of Electrical Engineering

Xi'an Jiaotong University
Ltd.
PetroChina

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

3 Scopus citations

Abstract

This study investigates the dielectric and gas generation characteristics of KI50EX synthetic ester oil under accelerated thermal aging at 150 °C. The aging experiment was conducted over a period of four weeks, with weekly measurements of the dielectric constant, dielectric loss, and volume resistivity to analyze the evolution of the dielectric properties throughout the aging process. Dissolved gas analysis (DGA) was employed to identify and quantify the gases generated during aging, and the results were interpreted using the three-ratio method and the Duval triangle method for fault diagnosis. Based on the experimental findings, this study proposes improvements to the existing diagnostic methods to enhance the accuracy of fault identification for synthetic esters.

Original language	English
Title of host publication	2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3396-3401
Number of pages	6
ISBN (Electronic)	9798331542979
DOIs	https://doi.org/10.1109/CIEEC64805.2025.11116162
State	Published - 2025
Event	8th IEEE International Electrical and Energy Conference, CIEEC 2025 - Changsha, China Duration: 16 May 2025 → 18 May 2025

Publication series

Name	2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025

Conference

Conference	8th IEEE International Electrical and Energy Conference, CIEEC 2025
Country/Territory	China
City	Changsha
Period	16/05/25 → 18/05/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

dielectric
dissolved gas analysis
fault diagnosis
synthetic ester
thermal aging

Access to Document

10.1109/CIEEC64805.2025.11116162

Cite this

Zou, M., Ke, J., Tao, Q., Nie, Y., Chen, H., Wang, H., Zhu, Y., & Li, S. (2025). Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging. In 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025 (pp. 3396-3401). (2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CIEEC64805.2025.11116162

Zou, Mingfang ; Ke, Junxin ; Tao, Qiuli et al. / Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging. 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 3396-3401 (2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025).

@inproceedings{4346bdf0474d45b38b80d1a71dfcdf05,

title = "Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging",

abstract = "This study investigates the dielectric and gas generation characteristics of KI50EX synthetic ester oil under accelerated thermal aging at 150 °C. The aging experiment was conducted over a period of four weeks, with weekly measurements of the dielectric constant, dielectric loss, and volume resistivity to analyze the evolution of the dielectric properties throughout the aging process. Dissolved gas analysis (DGA) was employed to identify and quantify the gases generated during aging, and the results were interpreted using the three-ratio method and the Duval triangle method for fault diagnosis. Based on the experimental findings, this study proposes improvements to the existing diagnostic methods to enhance the accuracy of fault identification for synthetic esters.",

keywords = "dielectric, dissolved gas analysis, fault diagnosis, synthetic ester, thermal aging",

author = "Mingfang Zou and Junxin Ke and Qiuli Tao and Yongjie Nie and Hua Chen and Huijuan Wang and Yuanwei Zhu and Shengtao Li",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 8th IEEE International Electrical and Energy Conference, CIEEC 2025 ; Conference date: 16-05-2025 Through 18-05-2025",

year = "2025",

doi = "10.1109/CIEEC64805.2025.11116162",

language = "英语",

series = "2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025",

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

pages = "3396--3401",

booktitle = "2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025",

}

Zou, M, Ke, J, Tao, Q, Nie, Y, Chen, H, Wang, H, Zhu, Y & Li, S 2025, Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging. in 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025. 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025, Institute of Electrical and Electronics Engineers Inc., pp. 3396-3401, 8th IEEE International Electrical and Energy Conference, CIEEC 2025, Changsha, China, 16/05/25. https://doi.org/10.1109/CIEEC64805.2025.11116162

Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging. / Zou, Mingfang; Ke, Junxin; Tao, Qiuli et al.
2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. p. 3396-3401 (2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025).

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

TY - GEN

T1 - Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging

AU - Zou, Mingfang

AU - Ke, Junxin

AU - Tao, Qiuli

AU - Nie, Yongjie

AU - Chen, Hua

AU - Wang, Huijuan

AU - Zhu, Yuanwei

AU - Li, Shengtao

PY - 2025

Y1 - 2025

N2 - This study investigates the dielectric and gas generation characteristics of KI50EX synthetic ester oil under accelerated thermal aging at 150 °C. The aging experiment was conducted over a period of four weeks, with weekly measurements of the dielectric constant, dielectric loss, and volume resistivity to analyze the evolution of the dielectric properties throughout the aging process. Dissolved gas analysis (DGA) was employed to identify and quantify the gases generated during aging, and the results were interpreted using the three-ratio method and the Duval triangle method for fault diagnosis. Based on the experimental findings, this study proposes improvements to the existing diagnostic methods to enhance the accuracy of fault identification for synthetic esters.

AB - This study investigates the dielectric and gas generation characteristics of KI50EX synthetic ester oil under accelerated thermal aging at 150 °C. The aging experiment was conducted over a period of four weeks, with weekly measurements of the dielectric constant, dielectric loss, and volume resistivity to analyze the evolution of the dielectric properties throughout the aging process. Dissolved gas analysis (DGA) was employed to identify and quantify the gases generated during aging, and the results were interpreted using the three-ratio method and the Duval triangle method for fault diagnosis. Based on the experimental findings, this study proposes improvements to the existing diagnostic methods to enhance the accuracy of fault identification for synthetic esters.

KW - dielectric

KW - dissolved gas analysis

KW - fault diagnosis

KW - synthetic ester

KW - thermal aging

UR - https://www.scopus.com/pages/publications/105015694930

U2 - 10.1109/CIEEC64805.2025.11116162

DO - 10.1109/CIEEC64805.2025.11116162

M3 - 会议稿件

AN - SCOPUS:105015694930

T3 - 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025

SP - 3396

EP - 3401

BT - 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 8th IEEE International Electrical and Energy Conference, CIEEC 2025

Y2 - 16 May 2025 through 18 May 2025

ER -

Zou M, Ke J, Tao Q, Nie Y, Chen H, Wang H et al. Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging. In 2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025. Institute of Electrical and Electronics Engineers Inc. 2025. p. 3396-3401. (2025 IEEE 8th International Electrical and Energy Conference, CIEEC 2025). doi: 10.1109/CIEEC64805.2025.11116162

Dielectric and Gas Generation Characteristics of Synthetic Ester Insulation Oil under Accelerated Thermal Aging

Abstract

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UN SDGs

Keywords

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