A Power Cable Fault Location Method Combining With Wavelet Analysis And Curve Fitting
Power cable fault debugging has important significance for ensuring reliable supply of power system. At present,traveling wave method is widely used in cable fault test,of which one key is to determine the pulse starting point. Wavelet transform has good space locality,the pulse starting point can be well detected for the signal singularity sensitivity of wavelet analysis,but it may still appear large deviation in the condition that the pulse rising period of the signal becomes flat,for singularity of the starting point is too weak. Based on calculating the flat coefficient,a cable fault location analyzing method combining with wavelet analysis and curve fitting is proposed. Analysis of measured signal of low resistance cable fault shows that: the method reduces deviation of singularity detection and improves precision of fault location.
Curve fitting fault location power cable wavelet analysis
Qi-neng Jiang Shu-tao Zhao Jun Zhao Chen-guang Zhao
School of Electric and electronic Engineering of North China Electric Power University,Baoding 07100 School of Electric and electronic Engineering of North China Electric Power University,Baoding 07100 Power Supply Bureau of Jiang Men,Jiang Men 529000,China Power Supply Bureau of Ordos 010406,China
国际会议
南京
英文
598-602
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）