高电压技术2012，Vol.38Issue(3)：573-579,7.
航空发动机叶片柔性抛光技术
Influence of High Frequency Loss on Partial Discharge Pulse Identification of High Voltage Cross Linked Polyethylene Cables
摘要
Abstract
The equivalent bandwidth W-equivalent time length T separation technique is used to identify the partial discharge（PD） pulses by virtue of pulse clusters in the W-T two-dimensional Cartesian coordinate system,however,the high frequency loss of cross linked polyethylene（XLPE） insulated power cable during wave propagation will impair the clusters separation.Consequently,we developed an approximate propagation model to analyze the relation between W,T and PD propagation.While measuring the propagation parameters,this model could overcome the difficulties that propagation time measurement method has limitation of long cables and mathematical analytic solution（MAS） method,hardly measure the long cable.W and T of Gaussian PD pulses and mathematical relation model between W,T and propagation distance were calculated.Moreover,a customized XLPE cable was simulated and measured,and the approximate propagation model and the mathematical relation model were studied.Results show that the propagation loss has less influence on W classification and more influence on T classification.Accordingly,W and T were both efficient for PD separation when the distance between the discharge source and the measurement point was less than 500 m.However,W was more efficient for W-T separation in long distance.关键词
发动机叶片/柔性/抛光工艺/砂带/自动化Key words
partial discharge/power cable/Gaussian pulse/equivalent bandwidth/equivalent time length/high frequency loss分类
机械制造引用本文复制引用
张周胜,马爱清,肖登明..航空发动机叶片柔性抛光技术[J].高电压技术,2012,38(3):573-579,7.基金项目
上海市教育委员会重点学科建设项目（J51303）~~ （）
