Study on the multi-stress aging of stator insulation based on fingerprint parameters

Bo Yue; Jian Li; Yonghong Cheng; Xie Hengkun

Study on the multi-stress aging of stator insulation based on fingerprint parameters

Bo Yue
, Jian Li
, Yonghong Cheng
, Xie Hengkun

School of Electrical Engineering

Xi'an Jiaotong University

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

The statistical operators of partial discharge, namely fingerprint parameters, are some important parameters of PD, which can be used to estimate discharge condition of insulation. The statistical operators are produced based on three phase and two intensity distributions by using statistical method, so they are in good connection with the shapes of these distributions and contain most significant information of discharge. Recently they are used widely to estimate the aging condition of insulation system for its advantages. In order to study the aging laws of Epoxy/mica insulation of stator coil, the multi-stress accelerated aging experiment based on the stator bar of 780kW/6kV large electric motor has been conducted in the laboratory environment. Partial discharge is tested at the end of each aging cycle, and then several fingerprints of PD parameter distributions are analyzed and studied in this paper. The results of the experiment show that the correlation factor and asymmetry of H_qmax(ψ), H_qn(ψ) and H_n(ψ) at the rated voltage always increase with the aging time. The increase of correlation factor shows that the shapes of phase-resolved distributions of PD parameters become more and more similar between the positive and negative halves of voltage cycle. And the increase of asymmetry operator shows that the discharge in negative half becomes more and more serious with respect to that in positive half. It is concluded that the special fingerprint parameters can be used to evaluate the aging condition of epoxy/mica insulation.

Original language	English
Pages	729-732
Number of pages	4
State	Published - 2001
Event	Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems - Himeji, Japan Duration: 19 Nov 2001 → 22 Nov 2001

Conference

Conference	Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems
Country/Territory	Japan
City	Himeji
Period	19/11/01 → 22/11/01

Cite this

Yue, B., Li, J., Cheng, Y., & Hengkun, X. (2001). Study on the multi-stress aging of stator insulation based on fingerprint parameters. 729-732. Paper presented at Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems, Himeji, Japan.

Yue, Bo ; Li, Jian ; Cheng, Yonghong et al. / Study on the multi-stress aging of stator insulation based on fingerprint parameters. Paper presented at Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems, Himeji, Japan.4 p.

@conference{d26832a4d3fd49da9f607c173687690f,

title = "Study on the multi-stress aging of stator insulation based on fingerprint parameters",

abstract = "The statistical operators of partial discharge, namely fingerprint parameters, are some important parameters of PD, which can be used to estimate discharge condition of insulation. The statistical operators are produced based on three phase and two intensity distributions by using statistical method, so they are in good connection with the shapes of these distributions and contain most significant information of discharge. Recently they are used widely to estimate the aging condition of insulation system for its advantages. In order to study the aging laws of Epoxy/mica insulation of stator coil, the multi-stress accelerated aging experiment based on the stator bar of 780kW/6kV large electric motor has been conducted in the laboratory environment. Partial discharge is tested at the end of each aging cycle, and then several fingerprints of PD parameter distributions are analyzed and studied in this paper. The results of the experiment show that the correlation factor and asymmetry of Hqmax(ψ), Hqn(ψ) and Hn(ψ) at the rated voltage always increase with the aging time. The increase of correlation factor shows that the shapes of phase-resolved distributions of PD parameters become more and more similar between the positive and negative halves of voltage cycle. And the increase of asymmetry operator shows that the discharge in negative half becomes more and more serious with respect to that in positive half. It is concluded that the special fingerprint parameters can be used to evaluate the aging condition of epoxy/mica insulation.",

author = "Bo Yue and Jian Li and Yonghong Cheng and Xie Hengkun",

year = "2001",

language = "英语",

pages = "729--732",

note = "Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems ; Conference date: 19-11-2001 Through 22-11-2001",

}

Yue, B, Li, J, Cheng, Y & Hengkun, X 2001, 'Study on the multi-stress aging of stator insulation based on fingerprint parameters', Paper presented at Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems, Himeji, Japan, 19/11/01 - 22/11/01 pp. 729-732.

Study on the multi-stress aging of stator insulation based on fingerprint parameters. / Yue, Bo; Li, Jian; Cheng, Yonghong et al.
2001. 729-732 Paper presented at Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems, Himeji, Japan.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Study on the multi-stress aging of stator insulation based on fingerprint parameters

AU - Yue, Bo

AU - Li, Jian

AU - Cheng, Yonghong

AU - Hengkun, Xie

PY - 2001

Y1 - 2001

N2 - The statistical operators of partial discharge, namely fingerprint parameters, are some important parameters of PD, which can be used to estimate discharge condition of insulation. The statistical operators are produced based on three phase and two intensity distributions by using statistical method, so they are in good connection with the shapes of these distributions and contain most significant information of discharge. Recently they are used widely to estimate the aging condition of insulation system for its advantages. In order to study the aging laws of Epoxy/mica insulation of stator coil, the multi-stress accelerated aging experiment based on the stator bar of 780kW/6kV large electric motor has been conducted in the laboratory environment. Partial discharge is tested at the end of each aging cycle, and then several fingerprints of PD parameter distributions are analyzed and studied in this paper. The results of the experiment show that the correlation factor and asymmetry of Hqmax(ψ), Hqn(ψ) and Hn(ψ) at the rated voltage always increase with the aging time. The increase of correlation factor shows that the shapes of phase-resolved distributions of PD parameters become more and more similar between the positive and negative halves of voltage cycle. And the increase of asymmetry operator shows that the discharge in negative half becomes more and more serious with respect to that in positive half. It is concluded that the special fingerprint parameters can be used to evaluate the aging condition of epoxy/mica insulation.

AB - The statistical operators of partial discharge, namely fingerprint parameters, are some important parameters of PD, which can be used to estimate discharge condition of insulation. The statistical operators are produced based on three phase and two intensity distributions by using statistical method, so they are in good connection with the shapes of these distributions and contain most significant information of discharge. Recently they are used widely to estimate the aging condition of insulation system for its advantages. In order to study the aging laws of Epoxy/mica insulation of stator coil, the multi-stress accelerated aging experiment based on the stator bar of 780kW/6kV large electric motor has been conducted in the laboratory environment. Partial discharge is tested at the end of each aging cycle, and then several fingerprints of PD parameter distributions are analyzed and studied in this paper. The results of the experiment show that the correlation factor and asymmetry of Hqmax(ψ), Hqn(ψ) and Hn(ψ) at the rated voltage always increase with the aging time. The increase of correlation factor shows that the shapes of phase-resolved distributions of PD parameters become more and more similar between the positive and negative halves of voltage cycle. And the increase of asymmetry operator shows that the discharge in negative half becomes more and more serious with respect to that in positive half. It is concluded that the special fingerprint parameters can be used to evaluate the aging condition of epoxy/mica insulation.

UR - https://www.scopus.com/pages/publications/0035720610

M3 - 论文

AN - SCOPUS:0035720610

SP - 729

EP - 732

T2 - Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems

Y2 - 19 November 2001 through 22 November 2001

ER -

Yue B, Li J, Cheng Y, Hengkun X. Study on the multi-stress aging of stator insulation based on fingerprint parameters. 2001. Paper presented at Proceedings of 2001 International Symp. on Electrical Insulating Materials (ISEIM 2001) / 2001 Asian Conf. on Electrical Insulation Diagnosis (ACEID 2001) / 33rd Symp. on Electrical and Electronic Insulating Materials and Applications in Systems, Himeji, Japan.

Study on the multi-stress aging of stator insulation based on fingerprint parameters

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