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Study on Discharge Characteristics of Flowing Transformer Oil Containing Impurities
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Yongjin ZHAO1, Yongze ZHANG1, Gepeng WANG1, Jiayuan GUO1, Maomao SHI1, Ju TANG2
Insulating Materials | 2022, 55(9) : 40 - 46
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Insulating Materials | 2022, 55(9): 40-46
• Material Research •
Study on Discharge Characteristics of Flowing Transformer Oil Containing Impurities
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Yongjin ZHAO1, Yongze ZHANG1, Gepeng WANG1, Jiayuan GUO1, Maomao SHI1, Ju TANG2
Affiliations
  • 1Xi'an XD Transformer Co., Ltd., Xi'an 710077, China
  • 2State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
Published: 2022-09-20 doi: 10.16790/j.cnki.1009-9239.im.2022.09.007
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In order to compare the discharge characteristics difference of metal particles and bubbles in flowing transformer oil, the flowing oils containing impurities were conducted partial discharge (PD) and breakdown experiments on a simulating experiment discharge platform. The waveforms of discharge signals were compared, and the phase resolved partial discharge (PRPD) maps were established. The results show that there are significant differences between the discharge characteristics of two defects in flowing oil. The metal particle PD can excite ultra high frequency signals, while the bubble PD can only excite very high frequency signals. The metal particle PD covers all the power frequency cycle, and the bubble PD distributes in the power frequency negative half cycle (236°-305°) mainly. Compared with metal particles, the effect of bubbles on the breakdown voltage of transformer oil is more serious.

bubble  /  metal particles  /  transformer oil  /  partial discharge  /  breakdown
Yongjin ZHAO, Yongze ZHANG, Gepeng WANG, Jiayuan GUO, Maomao SHI, Ju TANG. Study on Discharge Characteristics of Flowing Transformer Oil Containing Impurities[J]. Insulating Materials, 2022 , 55 (9) : 40 -46 . DOI: 10.16790/j.cnki.1009-9239.im.2022.09.007
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.09.007
  • Receive Date：2021-09-18
  • Online Date：2025-12-23
  • Published：2022-09-20
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History
  • Received：2021-09-18
  • Revised：2021-11-10
Funding
Affiliations
    1Xi'an XD Transformer Co., Ltd., Xi'an 710077, China
    2State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
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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