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Partial Discharge Characteristics of Oil-paper Insulation Under High Frequency Pulse Voltage
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Xinyu YOU1, Xiaonan LI2, Cheng LIU2, Kai LIU2, Yan YANG2, Guangning WU2
Insulating Materials | 2021, 54(10) : 66 - 72
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Insulating Materials | 2021, 54(10): 66-72
• Insulation Technology •
Partial Discharge Characteristics of Oil-paper Insulation Under High Frequency Pulse Voltage
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Xinyu YOU1, Xiaonan LI2, Cheng LIU2, Kai LIU2, Yan YANG2, Guangning WU2
Affiliations
  • 1China Shenhua Railway Equipment Company Limited, Cangzhou 061113, China
  • 2Southwest Jiaotong University, Chengdu 611756, China
Published: 2021-10-20 doi: 10.16790/j.cnki.1009-9239.im.2021.10.010
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During the operation of high-frequency transformer, oil-paper insulation bears severe electric and thermal stress, and the insulation system is easy to fail prematurely. In order to study the effect of high frequency pulse voltage on the discharge characteristics of oil-paper insulation, we built a partial discharge (PD) test platform under high frequency pulse voltage to conduct partial discharge tests. The characteristics of partial discharge of oil-paper insulation under highfrequency voltage was studied and compared with the characteristics under power frequency voltage. The results show that under high frequency voltage, partial discharge mainly occurs at the rising and falling edge of voltage, the PD amplitude is much higher than that under power frequency, and there is an frequency-induced inflection point near the frequency of 10 kHz. Moreover, oil-paper insulation is punctured under high frequency impulse. The reason is that the rapid voltage rise rate caused by high frequency changes the local field strength and high frequency electrothermal coupling effect at the defect position, resulting in the change of the partial discharge intensity.

high frequency pulse voltage  /  oil-paper insulation  /  higher voltage rise rate  /  frequency-induced inflection point  /  partial discharge
Xinyu YOU, Xiaonan LI, Cheng LIU, Kai LIU, Yan YANG, Guangning WU. Partial Discharge Characteristics of Oil-paper Insulation Under High Frequency Pulse Voltage[J]. Insulating Materials, 2021 , 54 (10) : 66 -72 . DOI: 10.16790/j.cnki.1009-9239.im.2021.10.010
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.10.010
  • Receive Date：2020-12-17
  • Online Date：2026-03-23
  • Published：2021-10-20
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History
  • Received：2020-12-17
  • Revised：2021-02-15
Funding
Affiliations
    1China Shenhua Railway Equipment Company Limited, Cangzhou 061113, China
    2Southwest Jiaotong University, Chengdu 611756, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.10.010
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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
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Genus		 种数
Number of
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Percentage of total
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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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