电工技术学报  2022, Vol. 37 Issue (21): 5578-5586    DOI: 10.19595/j.cnki.1000-6753.tces.211207
高电压与放电 |
低气压下航空线缆的局部放电特性
江军1, 李治1, 张本栋2, 李文源3, 张潮海1
1.南京航空航天大学多电飞机电气系统工信部重点实验室 南京 211106;
2.国网山东省电力公司莱芜供电公司 济南 250000;
3.曼彻斯特大学电气电子工程学院 曼彻斯特 M60 1QD
Partial Discharge Characteristics of Aeronautical Cables at Low Pressure
Jiang Jun1, Li Zhi1, Zhang Bendong2, Li Wenyuan3, Zhang Chaohai1
1. Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics Nanjing 211106 China;
2. State Grid Shandong Electric Power Company Lai Wu Power Supply Company Jinan 250000 China;
3. School of Electrical and Electronic Engineering The University of Manchester Manchester M60 1QD United Kingdom
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摘要 为实现飞机电气化,电源电压等级不断升高,多电飞机电气系统中线缆绝缘发生局部放电(PD)的风险随之增加。该文通过设置线缆对接地金属板放电、线缆对线缆架放电和线缆与线缆间放电三种典型模型,全面探究了航空线缆在低气压以及典型工作频率下的局部放电特性。试验结果表明,三种放电模型的局部放电起始电压(PDIV)都随着气压的下降而降低,50kPa以上时线缆与线缆间放电模型的PDIV高出其他模型的2倍以上。电压频率的增大将显著增加模型的放电重复率,10kPa下的线缆对线缆架放电影响效果最为明显。相同工况下,不同放电模型局部放电相位分析(PRPD)谱图的相位宽度及“极性效应”强弱存在差异,这些特征有助于放电模型类型的识别,也将为航空线缆设计与故障诊断提供借鉴和参考。
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江军
李治
张本栋
李文源
张潮海
关键词 低气压多电飞机航空线缆局部放电局部放电相位分析    
Abstract:In order to achieve the electrification of aircraft, the risk of partial discharge (PD) of cable insulation in the electrical system of more-electric-aircraft is increasing with the constant increase of power supply and voltage level. The partial discharge characteristics of aeronautical cables at low pressure and typical frequency were investigated by setting three typical models: cable to ground metal plate discharge, cable to cable rack discharge and cable to cable discharge. The experimental results show that the partial discharge inception voltage (PDIV) of the three types of discharge models decreases with the decrease of pressure, and the PDIV of cable to cable discharge models is more than two times higher than that of other models when the pressure is above 50kPa. The increase of voltage frequency significantly increases the discharge repetition rate of models, and the effect is obvious for cable to cable rack discharge at 10kPa. In the same condition, the phase width and the strength of "polarity effect" of phase-resolved partial discharge (PRPD) spectrum for different discharge models varies. The characteristics are helpful to the identification of discharge model types, and can provide reference for the design and fault diagnosis of aeronautical cables.
Key wordsLow pressure    more-electric-aircraft    aeronautical cable    partial discharge    phase-resolved partial discharge   
收稿日期: 2021-08-02     
PACS: TM855  
基金资助:江苏省自然科学基金面上项目(BK20211189)、中央高校基本科研业务费专项资金(NT2021012)和南京航空航天大学2021年度“研究生创新实验竞赛”培育项目资助
通讯作者: 江 军 男,1988年生,博士,副教授,研究方向为面向电力设备及航空航天电气装备的状态监测与故障诊断。E-mail:jiangjun0628@163.com   
作者简介: 李 治 男,1998年生,硕士研究生,研究方向为电气设备状态检测与故障诊断。E-mail:lz15543050534@163.com
引用本文:   
江军, 李治, 张本栋, 李文源, 张潮海. 低气压下航空线缆的局部放电特性[J]. 电工技术学报, 2022, 37(21): 5578-5586. Jiang Jun, Li Zhi, Zhang Bendong, Li Wenyuan, Zhang Chaohai. Partial Discharge Characteristics of Aeronautical Cables at Low Pressure. Transactions of China Electrotechnical Society, 2022, 37(21): 5578-5586.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.211207          https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I21/5578