中国电机工程学报2024，Vol.44Issue(24)：9897-9908,中插32,13.DOI:10.13334/j.0258-8013.pcsee.232310
高dV/dt电压下航空线缆局部放电仿真及特性分析
Partial Discharge Simulation and Characteristic Analysis of Aviation Cables Under High dV/dt Voltage
摘要
Abstract
As the development of More-electric-aircraft(MEA)advances,there is a continuous increase in voltage levels and power density.The effective application of new power electronic devices has significantly raised the energy density of aircraft as well as increased the risk of partial discharge(PD)under high dV/dt voltage.This paper conducts a joint simulation based on the electric field model.Through numerical calculation,field strength analysis,and experimental comparison,combined with aviation cables PD testing,the mechanism of PD with rise time and frequency under high dV/dt voltage is deeply explored.The results show that the reduction of rise time has a significant effect on discharge.When 50 ns is compared with 250 ns,the cumulative discharge amplitude and number of discharges of the model increase by more than 80%.The discharge delay and the recovery time of the air gap electric field have also experienced a noticeable decrease.The increase in frequency has an"inflection point"mechanism for the impact on PD.Around 1 kHz to 10 kHz,the dielectric loss effect significantly enhances the occurrence of discharge.The discharge amplitude and discharge times both show an increasing trend.In the higher frequency band,the charge accumulation effect dominated by shortened electrical level inhibits discharge.This paper provides reference for the design,testing and evaluation of aviation cables insulation under high frequency,high voltage and high dV/dt voltages in MEA electrical systems.关键词
电场模型/航空线缆/高dV/dt/局部放电/上升时间/频率Key words
electric field model/aviation cables/high dV/dt/partial discharge/rise time/frequency分类
信息技术与安全科学引用本文复制引用
刘维,江军,沈志邦,李文源,张潮海..高dV/dt电压下航空线缆局部放电仿真及特性分析[J].中国电机工程学报,2024,44(24):9897-9908,中插32,13.基金项目
航空科学基金项目(20230040052001) （20230040052001）
国家自然科学基金项目(52277152) （52277152）
江苏省自然科学基金项目(BK20211189).Aeronautical Science Foundation of China(20230040052001) （BK20211189）
Project Supported by National Natural Science Foundation of China(52277152) （52277152）
Natural Science Foundation of Jiangsu Province(BK20211189). （BK20211189）
