Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters

Jiancheng Song; Yonghong Cheng; Hengkun Xie; Junfang Hao; Haiying Li

Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters

Jiancheng Song
, Yonghong Cheng
, Hengkun Xie
, Junfang Hao
, Haiying Li

School of Electrical Engineering

Xi'an Jiaotong University

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

7 Scopus citations

Abstract

The long-term aging test for stator winding insulation (SWI) of large generator is carried out with multi-stresses, including thermal, electrical, mechanical and thermal cycling stresses. During aging periods, the characteristics of SWI are measured for the determination of deterioration degree. Some characteristic parameters, included PD intensity index PDI, PD phase index PDP, ac current rapid increase rate m₂, ac current rapid increase index Δ₃ and so on, are proposed to diagnose the degradation condition of large generator SWI subjected to combined stresses. The definitions of PDI, PDP, m₂ and Δ₃ are given in this paper. It is theoretically concluded that the PDI and PDP are the functions of dissipation factor tip-up and capacitance tip-up. The m₂ and Δ₃ indicate the growth rate of ac current between the first rapid increase point and the second rapid increase point. The experimental results are given and the relationship between the new characteristic parameters and residual breakdown voltage of stator winding insulation are discussed. It has been verified that these parameters, especially PDI and m₂, have closely relations with the residual breakdown voltage of the specimen insulation.

Original language	English
Pages	709-712
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

Keywords

AC dielectric characteristic parameter
Insulation diagnosis
Partial discharge
Stator winding insulation

Cite this

Song, J., Cheng, Y., Xie, H., Hao, J., & Li, H. (2001). Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters. 709-712. 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.

Song, Jiancheng ; Cheng, Yonghong ; Xie, Hengkun et al. / Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic 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.

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title = "Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters",

abstract = "The long-term aging test for stator winding insulation (SWI) of large generator is carried out with multi-stresses, including thermal, electrical, mechanical and thermal cycling stresses. During aging periods, the characteristics of SWI are measured for the determination of deterioration degree. Some characteristic parameters, included PD intensity index PDI, PD phase index PDP, ac current rapid increase rate m2, ac current rapid increase index Δ3 and so on, are proposed to diagnose the degradation condition of large generator SWI subjected to combined stresses. The definitions of PDI, PDP, m2 and Δ3 are given in this paper. It is theoretically concluded that the PDI and PDP are the functions of dissipation factor tip-up and capacitance tip-up. The m2 and Δ3 indicate the growth rate of ac current between the first rapid increase point and the second rapid increase point. The experimental results are given and the relationship between the new characteristic parameters and residual breakdown voltage of stator winding insulation are discussed. It has been verified that these parameters, especially PDI and m2, have closely relations with the residual breakdown voltage of the specimen insulation.",

keywords = "AC dielectric characteristic parameter, Insulation diagnosis, Partial discharge, Stator winding insulation",

author = "Jiancheng Song and Yonghong Cheng and Hengkun Xie and Junfang Hao and Haiying Li",

year = "2001",

language = "英语",

pages = "709--712",

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",

}

Song, J, Cheng, Y, Xie, H, Hao, J & Li, H 2001, 'Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic 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. 709-712.

Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters. / Song, Jiancheng; Cheng, Yonghong; Xie, Hengkun et al.
2001. 709-712 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 - Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters

AU - Song, Jiancheng

AU - Cheng, Yonghong

AU - Xie, Hengkun

AU - Hao, Junfang

AU - Li, Haiying

PY - 2001

Y1 - 2001

N2 - The long-term aging test for stator winding insulation (SWI) of large generator is carried out with multi-stresses, including thermal, electrical, mechanical and thermal cycling stresses. During aging periods, the characteristics of SWI are measured for the determination of deterioration degree. Some characteristic parameters, included PD intensity index PDI, PD phase index PDP, ac current rapid increase rate m2, ac current rapid increase index Δ3 and so on, are proposed to diagnose the degradation condition of large generator SWI subjected to combined stresses. The definitions of PDI, PDP, m2 and Δ3 are given in this paper. It is theoretically concluded that the PDI and PDP are the functions of dissipation factor tip-up and capacitance tip-up. The m2 and Δ3 indicate the growth rate of ac current between the first rapid increase point and the second rapid increase point. The experimental results are given and the relationship between the new characteristic parameters and residual breakdown voltage of stator winding insulation are discussed. It has been verified that these parameters, especially PDI and m2, have closely relations with the residual breakdown voltage of the specimen insulation.

AB - The long-term aging test for stator winding insulation (SWI) of large generator is carried out with multi-stresses, including thermal, electrical, mechanical and thermal cycling stresses. During aging periods, the characteristics of SWI are measured for the determination of deterioration degree. Some characteristic parameters, included PD intensity index PDI, PD phase index PDP, ac current rapid increase rate m2, ac current rapid increase index Δ3 and so on, are proposed to diagnose the degradation condition of large generator SWI subjected to combined stresses. The definitions of PDI, PDP, m2 and Δ3 are given in this paper. It is theoretically concluded that the PDI and PDP are the functions of dissipation factor tip-up and capacitance tip-up. The m2 and Δ3 indicate the growth rate of ac current between the first rapid increase point and the second rapid increase point. The experimental results are given and the relationship between the new characteristic parameters and residual breakdown voltage of stator winding insulation are discussed. It has been verified that these parameters, especially PDI and m2, have closely relations with the residual breakdown voltage of the specimen insulation.

KW - AC dielectric characteristic parameter

KW - Insulation diagnosis

KW - Partial discharge

KW - Stator winding insulation

UR - https://www.scopus.com/pages/publications/0035719262

M3 - 论文

AN - SCOPUS:0035719262

SP - 709

EP - 712

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 -

Song J, Cheng Y, Xie H, Hao J, Li H. Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic 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.

Aging diagnosis of large generator stator winding insulation based on ac dielectric characteristic parameters

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