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PD characteristics of typical insulation defects in main insulation of large motor based on PRPD and PSA pattern
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Ruiyu WANG1, Pengyu ZHANG2, Wei WANG3, Yiling ZHANG4, Ailiang KANG5
Insulating Materials | 2024, 57(11) : 119 - 126
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Insulating Materials | 2024, 57(11): 119-126
• Test and Analysis •
PD characteristics of typical insulation defects in main insulation of large motor based on PRPD and PSA pattern
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Ruiyu WANG1, Pengyu ZHANG2, Wei WANG3, Yiling ZHANG4, Ailiang KANG5
Affiliations
  • 1State Grid Shanxi Electric Power Company, Taiyuan 030021, China
  • 2State Grid Taiyuan Power Supply Company, Taiyuan 030012, China
  • 3State Grid Shanxi Electric Power Research Institute, Taiyuan 030001, China
  • 4State Grid Tianjin Baodi Power Supply Company, Tianjin 301800, China
  • 5National and Provincial Joint Engineering Laboratory of Mining Intelligent Electrical Apparatus Technology, Taiyuan University of Technology, Taiyuan 030024, China
Published: 2024-11-20 doi: 10.16790/j.cnki.1009-9239.im.2024.11.015
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The main insulation of large motor will produce many kinds of insulation defects during its operation process, and only used the phase resolved partial discharge (PRPD) pattern cannot reflect the characteristics of the defects fully. In this paper, four typical insulation defects such as internal air gap, coil wear in slot, overlapping part fault of end semiconductor coating and anti corona layer, and surface contamination were simulated in laboratory, their partial discharge (PD) information were collected in the electromagnetic shielding chamber, and the PRPD patterns and PSA patterns were drawn respectively. Combined with the characteristics of PRPD and PSA patterns under different voltage levels, the discharge characteristics of the typical insulation defects were analyzed. The results show that considering the symmetry, discharge amplitude, spectrum envelope shape of PRPD pattern and the discharge cluster number, discharge cluster distribution position, discharge cluster shape of PSA pattern, the four typical insulation defects can be identified accurately.

stator winding  /  insulation defect  /  PRPD pattern  /  PSA pattern
Ruiyu WANG, Pengyu ZHANG, Wei WANG, Yiling ZHANG, Ailiang KANG. PD characteristics of typical insulation defects in main insulation of large motor based on PRPD and PSA pattern[J]. Insulating Materials, 2024 , 57 (11) : 119 -126 . DOI: 10.16790/j.cnki.1009-9239.im.2024.11.015
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doi: 10.16790/j.cnki.1009-9239.im.2024.11.015
  • Receive Date：2023-11-28
  • Online Date：2025-12-24
  • Published：2024-11-20
Article Data
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History
  • Received：2023-11-28
  • Revised：2024-01-11
Funding
Affiliations
    1State Grid Shanxi Electric Power Company, Taiyuan 030021, China
    2State Grid Taiyuan Power Supply Company, Taiyuan 030012, China
    3State Grid Shanxi Electric Power Research Institute, Taiyuan 030001, China
    4State Grid Tianjin Baodi Power Supply Company, Tianjin 301800, China
    5National and Provincial Joint Engineering Laboratory of Mining Intelligent Electrical Apparatus Technology, Taiyuan University of Technology, Taiyuan 030024, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.11.015
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小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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