报告详情
Partial Discharge Characteristics of Electrical Aircraft Machine Winding after Thermal Aging
编号：425
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更新：2022-08-29 16:05:55 浏览：55次
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摘要
Purpose/Aim
Thermal ageing can accelerate the insulation damage of aviation electrical equipment. In order to establish an insulation lifetime model, partial discharge (PD) is an essential factor in measuring insulation damage. This work examines the impact of thermal ageing on PD of aerospace machine winding.
Experimental/Modeling methods
The wires used in the testing are polyimide film insulated winding wire and polyester film insulated winding wire which is 1 mm in diameter. These wires can operate for more than 20,000 hours without any insulation failures at temperatures from 180℃ to 220℃ and are rated 4800 V. The samples consist of one pair of twisted insulated wires. The ageing temperature is set at 300 ℃. One ageing cycle is 24 hours. The Standard PD test circuit and method described in IEC 60270 are used to evaluate the insulation condition of different thermal ageing level samples. The voltage was applied to the sample twisted wires using a high voltage amplifier controlled by a function generator. The peak-to-peak voltage of applied AC voltage ranges from 800 V to 1500 V at 50 Hz. The oscilloscope was used to acquire PD signals and applied AC voltage. Sampling frequency is set as20 MS/s.
Results/discussion
The phase-resolved partial discharge (PRPD) patterns results show that the PD inception voltage (PDIV) dropped from 920 V to 860 V. Furthermore, PD activity occurs in the phase ranges 15° to 90° and 180° to 270° with magnitudes up to 603 pC. After ageing, the wires eventually darkened with PD magnitude increasing up to 1810pC, three times that of the unaged sample.
Conclusions
According to the PRPD results, several features including PDIV and PD magnitude are extracted and synthesized as a failure precursor, which can be used as a parameter to identify insulation failure of thermal ageing insulation and establish a life model.
Thermal ageing can accelerate the insulation damage of aviation electrical equipment. In order to establish an insulation lifetime model, partial discharge (PD) is an essential factor in measuring insulation damage. This work examines the impact of thermal ageing on PD of aerospace machine winding.
Experimental/Modeling methods
The wires used in the testing are polyimide film insulated winding wire and polyester film insulated winding wire which is 1 mm in diameter. These wires can operate for more than 20,000 hours without any insulation failures at temperatures from 180℃ to 220℃ and are rated 4800 V. The samples consist of one pair of twisted insulated wires. The ageing temperature is set at 300 ℃. One ageing cycle is 24 hours. The Standard PD test circuit and method described in IEC 60270 are used to evaluate the insulation condition of different thermal ageing level samples. The voltage was applied to the sample twisted wires using a high voltage amplifier controlled by a function generator. The peak-to-peak voltage of applied AC voltage ranges from 800 V to 1500 V at 50 Hz. The oscilloscope was used to acquire PD signals and applied AC voltage. Sampling frequency is set as20 MS/s.
Results/discussion
The phase-resolved partial discharge (PRPD) patterns results show that the PD inception voltage (PDIV) dropped from 920 V to 860 V. Furthermore, PD activity occurs in the phase ranges 15° to 90° and 180° to 270° with magnitudes up to 603 pC. After ageing, the wires eventually darkened with PD magnitude increasing up to 1810pC, three times that of the unaged sample.
Conclusions
According to the PRPD results, several features including PDIV and PD magnitude are extracted and synthesized as a failure precursor, which can be used as a parameter to identify insulation failure of thermal ageing insulation and establish a life model.
关键词
Aerospace Machine Winding,Thermal Ageing,Partial discharge (PD),PD inception voltage (PDIV),Twisted pair
报告人
Yuming Wang
Chongqing University稿件作者
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重要日期
-
会议日期
09月25日
2022
至09月29日
2022
-
08月15日 2022
提前注册日期
-
09月10日 2022
报告提交截止日期
-
11月10日 2022
注册截止日期
-
11月30日 2022
初稿截稿日期
-
11月30日 2022
终稿截稿日期
主办单位
IEEE DEIS
承办单位
Chongqing University
联系方式
- Zhengyong Huang
- 61******@qq.com
历届会议
-
2020年09月06日 中国 Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018年09月10日 希腊
2018 IEEE International Conference on High Voltage Engineering and Application -
2016年09月19日 中国 Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
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